PIC24FJ128GA010 DATA SHEET (01/09/2012) DOWNLOAD

PIC24FJ128GA010 FAMILY
64/80/100-Pin, General Purpose, 16-Bit Flash Microcontrollers
High-Performance CPU:
Analog Features:
• Modified Harvard Architecture
• Up to 16 MIPS Operation @ 32 MHz
• 8 MHz Internal Oscillator with 4x PLL Option and
Multiple Divide Options
• 17-Bit x 17-Bit Single-Cycle Hardware
Multiplier
• 32-Bit by 16-Bit Hardware Divider
• 16 x 16-Bit Working Register Array
• C Compiler Optimized Instruction Set Architecture:
- 76 base instructions
- Flexible addressing modes
• Two Address Generation Units for Separate Read
and Write Addressing of Data Memory
• 10-Bit, Up to 16-Channel Analog-to-Digital Converter
- 500 ksps conversion rate
- Conversion available during Sleep and Idle
• Dual Analog Comparators with Programmable
Input/Output Configuration
Peripheral Features:
• Two 3-Wire/4-Wire SPI modules, Supporting
4 Frame modes with 8-Level FIFO Buffer
• Two I2C™ modules Support Multi-Master/Slave
mode and 7-Bit/10-Bit Addressing
• Two UART modules:
- Supports RS-232, RS-485 and LIN/J2602
- On-chip hardware encoder/decoder for IrDA®
- Auto-wake-up on Start bit
- Auto-Baud Detect
- 4-level FIFO buffer
• Parallel Master Slave Port (PMP/PSP):
- Supports 8-bit or 16-bit data
- Supports 16 address lines
• Hardware Real-Time Clock/Calendar (RTCC):
- Provides clock, calendar and alarm functions
• Programmable Cyclic Redundancy Check (CRC)
- User-programmable polynomial
- 8/16-level FIFO buffer
• Five 16-Bit Timers/Counters with Programmable
Prescaler
• Five 16-Bit Capture Inputs
• Five 16-Bit Compare/PWM Outputs
• High-Current Sink/Source (18 mA/18 mA) on All
I/O Pins
• Configurable, Open-Drain Output on Digital I/O Pins
• Up to 5 External Interrupt Sources
• 5.5V Tolerant Input (digital pins only)
Special Microcontroller Features:
UART
SPI
I2C™
10-Bit
A/D (ch)
Comparators
PMP/PSP
JTAG
5
2
2
2
16
2
Y
Y
2
2
2
16
2
Y
Y
5
2
2
2
16
2
Y
Y
5
5
2
2
2
16
2
Y
Y
5
5
2
2
2
16
2
Y
Y
5
5
5
2
2
2
16
2
Y
Y
8K
5
5
5
2
2
2
16
2
Y
Y
8K
5
5
5
2
2
2
16
2
Y
Y
8K
5
5
5
2
2
2
16
2
Y
Y
Pins
Program
Memory
(Bytes)
SRAM
(Bytes)
Timers
16-Bit
Capture
Input
Compare/
PWM Output
• Operating Voltage Range of 2.0V to 3.6V
• Flash Program Memory:
- 1000 erase/write cycles
- 20-year data retention minimum
• Self-Reprogrammable under Software Control
• Selectable Power Management modes:
- Sleep, Idle and Alternate Clock modes
• Fail-Safe Clock Monitor Operation:
- Detects clock failure and switches to on-chip,
low-power RC oscillator
• On-Chip 2.5V Regulator
• JTAG Boundary Scan and Programming Support
• Power-on Reset (POR), Power-up Timer (PWRT)
and Oscillator Start-up Timer (OST)
• Flexible Watchdog Timer (WDT) with On-Chip,
Low-Power RC Oscillator for Reliable Operation
• In-Circuit Serial Programming™ (ICSP™) and
In-Circuit Emulation (ICE) via 2 Pins
PIC24FJ64GA006
64
64K
8K
5
5
PIC24FJ96GA006
64
96K
8K
5
5
5
PIC24FJ128GA006
64
128K
8K
5
5
PIC24FJ64GA008
80
64K
8K
5
PIC24FJ96GA008
80
96K
8K
5
PIC24FJ128GA008
80
128K
8K
PIC24FJ64GA010
100
64K
PIC24FJ96GA010
100
96K
PIC24FJ128GA010
100
128K
Device
 2005-2012 Microchip Technology Inc.
DS39747F-page 1
PIC24FJ128GA010 FAMILY
Pin Diagrams
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
PMD4/RE4
PMD3/RE3
PMD2/RE2
PMD1/RE1
PMD0/RE0
RF1
RF0
ENVREG
VCAP/VDDCORE
CN16/RD7
CN15/RD6
PMRD/CN14/RD5
PMWR/OC5/IC5/CN13/RD4
PMBE/OC4/RD3
OC3/RD2
OC2/RD1
64-Pin TQFP/QFN(1)
PMD5/RE5
PMD6/RE6
PMD7/RE7
PMA5/SCK2/CN8/RG6
PMA4/SDI2/CN9/RG7
PMA3/SDO2/CN10/RG8
MCLR
PMA2/SS2/CN11/RG9
VSS
VDD
C1IN+/AN5/CN7/RB5
C1IN-/AN4/CN6/RB4
C2IN+/AN3/CN5/RB3
C2IN-/AN2/SS1/CN4/RB2
PGC1/EMUC1/VREF-/AN1/CN3/RB1
2
3
4
5
6
7
8
9
10
11
12
PIC24FJXXGA006
PIC24FJXXXGA006
13
14
15
16
48
SOSCO/T1CK/CN0/RC14
47
46
45
44
43
42
41
40
SOSCI/CN1/RC13
OC1/RD0
IC4/PMCS1/INT4/RD11
IC3/PMCS2/INT3/RD10
IC2/U1CTS/INT2/RD9
IC1/RTCC/INT1/RD8
Vss
OSC2/CLKO/RC15
39
38
37
OSC1/CLKI/RC12
36
35
34
33
SDA1/RG3
U1RTS/BCLK1/SCK1/INT0/RF6
VDD
SCL1/RG2
U1RX/SDI1/RF2
U1TX/SDO1/RF3
PGC2/EMUC2/AN6/OCFA/RB6
PGD2/EMUD2/AN7/RB7
AVDD
AVSS
U2CTS/C1OUT/AN8/RB8
PMA7/C2OUT/AN9/RB9
TMS/PMA13/CVREF/AN10/RB10
TDO/PMA12/AN11/RB11
VSS
VDD
TCK/PMA11/AN12/RB12
TDI/PMA10/AN13/RB13
PMA1/U2RTS/BCLK2/AN14/RB14
PMA0/AN15/OCFB/CN12/RB15
PMA9/U2RX/SDA2/CN17/RF4
PMA8/U2TX/SCL2/CN18/RF5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
PGD1/EMUD1/PMA6/VREF+/AN0/CN2/RB0
1
Legend:
Shaded pins indicate pins that are tolerant to up to +5.5 VDC.
Note 1:
Bottom pad of QFN package must be connected to VSS.
DS39747F-page 2
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
Pin Diagrams (Continued)
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
PMD4/RE4
PMD3/RE3
PMD2/RE2
PMD1/RE1
PMD0/RE0
RG0
RG1
RF1
RF0
ENVREG
VCAP/VDDCORE
CN16/RD7
CN15/RD6
PMRD/CN14/RD5
PMWR/OC5/CN13/RD4
CN19/RD13
IC5/RD12
PMBE/OC4/RD3
OC3/RD2
OC2/RD1
80-Pin TQFP
PMD5/RE5
PMD6/RE6
PMD7/RE7
T2CK/RC1
T4CK/RC3
PMA5/SCK2/CN8/RG6
PMA4/SDI2/CN9/RG7
PMA3/SDO2/CN10/RG8
MCLR
PMA2/SS2/CN11/RG9
VSS
VDD
TMS/INT1/RE8
TDO/INT2/RE9
2
3
4
5
6
7
8
9
10
11
12
PIC24FJXXGA008
PIC24FJXXXGA008
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
SOSCO/T1CK/CN0/RC14
SOSCI/CN1/RC13
OC1/RD0
IC4/PMCS1/RD11
IC3/PMCS2/RD10
IC2/RD9
IC1/RTCC/RD8
SDA2/INT4/RA15
SCL2/INT3/RA14
VSS
OSC2/CLKO/RC15
OSC1/CLKI/RC12
VDD
SCL1/RG2
SDA1/RG3
SCK1/INT0/RF6
SDI1/RF7
SDO1/RF8
U1RX/RF2
U1TX/RF3
PGC2/EMUC2/AN6/OCFA/RB6
PGD2/EMUD2/AN7/RB7
PMA7/VREF-/RA9
PMA6/VREF+/RA10
AVDD
AVSS
U2CTS/C1OUT/AN8/RB8
C2OUT/AN9/RB9
PMA13/CVREF/AN10/RB10
PMA12/AN11/RB11
VSS
VDD
TCK/PMA11/AN12/RB12
TDI/PMA10/AN13/RB13
PMA1/U2RTS/BCLK2/AN14/RB14
PMA0/AN15/OCFB/CN12/RB15
U1CTS/CN20/RD14
U1RTS/BCLK1/CN21/RD15
PMA9/U2RX/CN17/RF4
PMA8/U2TX/CN18/RF5
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
C1IN+/AN5/CN7/RB5
C1IN-/AN4/CN6/RB4
C2IN+/AN3/CN5/RB3
C2IN-/AN2/SS1/CN4/RB2
PGC1/EMUC1/AN1/CN3/RB1
PGD1/EMUD1/AN0/CN2/RB0
1
Legend: Shaded pins indicate pins that are tolerant to up to +5.5 VDC.
 2005-2012 Microchip Technology Inc.
DS39747F-page 3
PIC24FJ128GA010 FAMILY
Pin Diagrams (Continued))
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
PMD4/RE4
PMD3/RE3
PMD2/RE2
RG13
RG12
RG14
PMD1/RE1
PMD0/RE0
RA7
RA6
RG0
RG1
RF1
RF0
ENVREG
VCAP/VDDCORE
CN16/RD7
CN15/RD6
PMRD/CN14/RD5
PMWR/OC5/CN13/RD4
CN19/RD13
IC5/RD12
PMBE/OC4/RD3
OC3/RD2
OC2/RD1
100-Pin TQFP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
PIC24FJXXGA010
PIC24FJXXXGA010
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
VSS
SOSCO/T1CK/CN0/RC14
SOSCI/CN1/RC13
OC1/RD0
IC4/PMCS1/RD11
IC3/PMCS2/RD10
IC2/RD9
IC1/RTCC/RD8
INT4/RA15
INT3/RA14
VSS
OSC2/CLKO/RC15
OSC1/CLKI/RC12
VDD
TDO/RA5
TDI/RA4
SDA2/RA3
SCL2/RA2
SCL1/RG2
SDA1/RG3
SCK1/INT0/RF6
SDI1/RF7
SDO1/RF8
U1RX/RF2
U1TX/RF3
PGC2/EMUC2/AN6/OCFA/RB6
PGD2/EMUD2/AN7/RB7
PMA7/VREF-/RA9
PMA6/VREF+/RA10
AVDD
AVSS
C1OUT/AN8/RB8
C2OUT/AN9/RB9
PMA13/CVREF/AN10/RB10
PMA12/AN11/RB11
VSS
VDD
TCK/RA1
U2RTS/BCLK2/RF13
U2CTS/RF12
PMA11/AN12/RB12
PMA10/AN13/RB13
PMA1/AN14/RB14
PMA0/AN15/OCFB/CN12/RB15
VSS
VDD
U1CTS/CN20/RD14
U1RTS/BCLK1/CN21/RD15
PMA9/U2RX/CN17/RF4
PMA8/U2TX/CN18/RF5
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
RG15
VDD
PMD5/RE5
PMD6/RE6
PMD7/RE7
T2CK/RC1
T3CK/RC2
T4CK/RC3
T5CK/RC4
PMA5/SCK2/CN8/RG6
PMA4/SDI2/CN9/RG7
PMA3/SDO2/CN10/RG8
MCLR
PMA2/SS2/CN11/RG9
VSS
VDD
TMS/RA0
INT1/RE8
INT2/RE9
C1IN+/AN5/CN7/RB5
C1IN-/AN4/CN6/RB4
C2IN+/AN3/CN5/RB3
C2IN-/AN2/SS1/CN4/RB2
PGC1/EMUC1/AN1/CN3/RB1
PGD1/EMUD1/AN0/CN2/RB0
Legend: Shaded pins indicate pins that are tolerant to up to +5.5 VDC.
DS39747F-page 4
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 7
2.0 Guidelines for Getting Started with 16-bit Microcontrollers ........................................................................................................ 19
3.0 CPU............................................................................................................................................................................................ 25
4.0 Memory Organization ................................................................................................................................................................. 31
5.0 Flash Program Memory.............................................................................................................................................................. 51
6.0 Resets ........................................................................................................................................................................................ 57
7.0 Interrupt Controller ..................................................................................................................................................................... 63
8.0 Oscillator Configuration .............................................................................................................................................................. 97
9.0 Power-Saving Features............................................................................................................................................................ 105
10.0 I/O Ports ................................................................................................................................................................................... 107
11.0 Timer1 ...................................................................................................................................................................................... 111
12.0 Timer2/3 and Timer4/5 ............................................................................................................................................................ 113
13.0 Input Capture............................................................................................................................................................................ 119
14.0 Output Compare....................................................................................................................................................................... 121
15.0 Serial Peripheral Interface (SPI)............................................................................................................................................... 127
16.0 Inter-Integrated Circuit (I2C™) ................................................................................................................................................. 137
17.0 Universal Asynchronous Receiver Transmitter (UART) ........................................................................................................... 145
18.0 Parallel Master Port (PMP)....................................................................................................................................................... 153
19.0 Real-Time Clock and Calendar (RTCC)................................................................................................................................... 163
20.0 Programmable Cyclic Redundancy Check (CRC) Generator .................................................................................................. 175
21.0 10-bit High-Speed A/D Converter............................................................................................................................................. 179
22.0 Comparator Module.................................................................................................................................................................. 189
23.0 Comparator Voltage Reference................................................................................................................................................ 193
24.0 Special Features ...................................................................................................................................................................... 195
25.0 Instruction Set Summary .......................................................................................................................................................... 205
26.0 Development Support............................................................................................................................................................... 213
27.0 Electrical Characteristics .......................................................................................................................................................... 217
28.0 Packaging Information.............................................................................................................................................................. 231
Appendix A: Revision History............................................................................................................................................................. 245
Index ................................................................................................................................................................................................. 247
The Microchip Web Site ..................................................................................................................................................................... 251
Customer Change Notification Service .............................................................................................................................................. 251
Customer Support .............................................................................................................................................................................. 251
Reader Response .............................................................................................................................................................................. 252
Product Identification System ............................................................................................................................................................ 253
 2005-2012 Microchip Technology Inc.
DS39747F-page 5
PIC24FJ128GA010 FAMILY
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at [email protected] or fax the Reader Response Form in the back of this data sheet to (480) 792-4150. We
welcome your feedback.
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The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
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To determine if an errata sheet exists for a particular device, please check with one of the following:
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When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are
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DS39747F-page 6
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
1.0
DEVICE OVERVIEW
This document contains device-specific information for
the following devices:
•
•
•
•
•
•
•
•
•
PIC24FJ64GA006
PIC24FJ64GA008
PIC24FJ64GA010
PIC24FJ96GA006
PIC24FJ96GA008
PIC24FJ96GA010
PIC24FJ128GA006
PIC24FJ128GA008
PIC24FJ128GA010
1.1.2
POWER-SAVING TECHNOLOGY
All of the devices in the PIC24FJ128GA010 family
incorporate a range of features that can significantly
reduce power consumption during operation. Key
items include:
This family introduces a new line of Microchip devices:
a 16-bit microcontroller family with a broad peripheral
feature set and enhanced computational performance.
The PIC24FJ128GA010 family offers a new migration
option for those high-performance applications which
may be outgrowing their 8-bit platforms, but don’t
require the numerical processing power of a digital
signal processor.
• On-the-Fly Clock Switching: The device clock
can be changed under software control to the
Timer1 source or the internal low-power RC
oscillator during operation, allowing the user to
incorporate power-saving ideas into their software
designs.
• Doze Mode Operation: When timing-sensitive
applications, such as serial communications,
require the uninterrupted operation of peripherals,
the CPU clock speed can be selectively reduced,
allowing incremental power savings without
missing a beat.
• Instruction-Based Power-Saving Modes: The
microcontroller can suspend all operations, or
selectively shut down its core while leaving its
peripherals active, with a single instruction in
software.
1.1
1.1.3
1.1.1
Core Features
16-BIT ARCHITECTURE
Central to all PIC24F devices is the 16-bit modified
Harvard architecture, first introduced with Microchip’s
dsPIC® digital signal controllers. The PIC24F CPU core
offers a wide range of enhancements, such as:
• 16-bit data and 24-bit address paths, with the
ability to move information between data and
memory spaces
• Linear addressing of up to 8 Mbytes (program
space) and 64 Kbytes (data)
• A 16-element working register array with built-in
software stack support
• A 17 x 17 hardware multiplier with support for
integer math
• Hardware support for 32 by 16-bit division
• An instruction set that supports multiple
addressing modes and is optimized for high-level
languages such as ‘C’
• Operational performance up to 16 MIPS
OSCILLATOR OPTIONS AND
FEATURES
All of the devices in the PIC24FJ128GA010 family offer
five different oscillator options, allowing users a range
of choices in developing application hardware. These
include:
• Two Crystal modes using crystals or ceramic
resonators.
• Two External Clock modes offering the option of a
divide-by-2 clock output.
• A Fast Internal Oscillator (FRC) with a nominal
8 MHz output, which can also be divided under
software control to provide clock speeds as low as
31 kHz.
• A Phase Lock Loop (PLL) frequency multiplier,
available to the external oscillator modes and the
FRC oscillator, which allows clock speeds of up to
32 MHz.
• A separate internal RC oscillator (LPRC) with a
fixed, 31 kHz output, which provides a low-power
option for timing-insensitive applications.
The internal oscillator block also provides a stable reference source for the Fail-Safe Clock Monitor. This
option constantly monitors the main clock source
against a reference signal provided by the internal
oscillator and enables the controller to switch to the
internal oscillator, allowing for continued low-speed
operation or a safe application shutdown.
 2005-2012 Microchip Technology Inc.
DS39747F-page 7
PIC24FJ128GA010 FAMILY
1.1.4
EASY MIGRATION
Regardless of the memory size, all devices share the
same rich set of peripherals, allowing for a smooth
migration path as applications grow and evolve.
The consistent pinout scheme used throughout the
entire family also aids in migrating to the next larger
device. This is true when moving between devices with
the same pin count, or even jumping from 64-pin to
80-pin to 100-pin devices.
The PIC24F family is pin-compatible with devices in the
dsPIC33 family, and shares some compatibility with the
pinout schema for PIC18 and dsPIC30. This extends
the ability of applications to grow from the relatively
simple, to the powerful and complex, yet still selecting
a Microchip device.
1.2
Other Special Features
• Communications: The PIC24FJ128GA010
family incorporates a range of serial communication peripherals to handle a range of application
requirements. All devices are equipped with two
independent UARTs with built-in IrDA
encoder/decoders. There are also two independent SPI modules, and two independent I2C
modules that support both Master and Slave
modes of operation.
• Parallel Master/Enhanced Parallel Slave Port:
One of the general purpose I/O ports can be
reconfigured for enhanced parallel data communications. In this mode, the port can be configured
for both master and slave operations, and
supports 8-bit and 16-bit data transfers with up to
16 external address lines in Master modes.
• Real-Time Clock/Calendar: This module
implements a full-featured clock and calendar with
alarm functions in hardware, freeing up timer
resources and program memory space for use of
the core application.
• 10-Bit A/D Converter: This module incorporates
programmable acquisition time, allowing for a
channel to be selected and a conversion to be
initiated without waiting for a sampling period, as
well as faster sampling speeds.
DS39747F-page 8
1.3
Details on Individual Family
Members
Devices in the PIC24FJ128GA010 family are available
in 64-pin, 80-pin and 100-pin packages. The general
block diagram for all devices is shown in Figure 1-1.
The devices are differentiated from each other in two
ways:
1.
2.
Flash program memory (64 Kbytes for
PIC24FJ64GA devices, 96 Kbytes for
PIC24FJ96GA devices and 128 Kbytes for
PIC24FJ128GA devices).
Available I/O pins and ports (53 pins on 6 ports for
64-pin devices, 69 pins on 7 ports for 80-pin
devices and 84 pins on 7 ports for 100-pin
devices). Note also that, since interrupt-on-change
inputs are available on every I/O pin for this family
of devices, the number of CN inputs also differs
between package sizes.
All other features for devices in this family are identical.
These are summarized in Table 1-1.
A list of the pin features available on the
PIC24FJ128GA010 family devices, sorted by function,
is shown in Table 1-2. Note that this table shows the pin
location of individual peripheral features and not how
they are multiplexed on the same pin. This information
is provided in the pinout diagrams in the beginning of
the data sheet. Multiplexed features are sorted by the
priority given to a feature, with the highest priority
peripheral being listed first.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
Operating Frequency
PIC24FJ128GA010
PIC24FJ96GA010
PIC24FJ64GA010
PIC24FJ128GA008
DC – 32 MHz
Program Memory (Bytes)
Program Memory (Instructions)
PIC24FJ96GA008
PIC24FJ64GA008
PIC24FJ128GA006
Features
PIC24FJ96GA006
DEVICE FEATURES FOR THE PIC24FJ128GA010 FAMILY
PIC24FJ64GA006
TABLE 1-1:
64K
96K
128K
64K
96K
128K
64K
96K
128K
22,016
32,768
44,032
22,016
32,768
44,032
22,016
32,768
44,032
Data Memory (Bytes)
8192
Interrupt Sources
(Soft Vectors/NMI Traps)
43
(39/4)
I/O Ports
Total I/O Pins
Ports B, C, D, E, F, G
Ports A, B, C, D, E, F, G
Ports A, B, C, D, E, F, G
53
69
84
Timers:
Total Number (16-bit)
5
32-Bit (from paired 16-bit timers)
2
Input Capture Channels
5
Output Compare/PWM
Channels
5
Input Change Notification
Interrupt
19
22
Serial Communications:
UART
2
SPI (3-wire/4-wire)
2
I2C™
2
Parallel Communications
(PMP/PSP)
Yes
JTAG Boundary Scan
Yes
10-Bit Analog-to-Digital Module
(input channels)
16
Analog Comparators
2
Resets (and Delays)
POR, BOR, RESET Instruction, MCLR, WDT, Illegal Opcode, Configuration Word
Mismatch, REPEAT Instruction, Hardware Traps (PWRT, OST, PLL Lock)
Instruction Set
Packages
 2005-2012 Microchip Technology Inc.
76 Base Instructions, Multiple Addressing Mode Variations
64-Pin TQFP/QFN
80-Pin TQFP
100-Pin TQFP
DS39747F-page 9
PIC24FJ128GA010 FAMILY
FIGURE 1-1:
PIC24FJ128GA010 FAMILY GENERAL BLOCK DIAGRAM
Data Bus
Interrupt
Controller
PORTA(1)
RA0:RA7,
RA9:RA10,
RA14:15
16
16
8
16
Data Latch
PSV & Table
Data Access
Control Block
Data RAM
PCH
PCL
Program Counter
Repeat
Stack
Control
Control
Logic
Logic
23
PORTB(1)
Address
Latch
RB0:RB15
16
23
16
Read AGU
Write AGU
Address Latch
16
PORTC
RC1:RC4,
RC12:RC15
Program Memory
Data Latch
EA MUX
24
Inst Latch
Literal Data
Address Bus
16
PORTD(1)
16
RD0:RD15
Inst Register
Instruction
Decode &
Control
RE0:RE9
Control Signals
OSC2/CLKO
OSC1/CLKI
Timing
Generation
FRC/LPRC
Oscillators
Precision
Band Gap
Reference
ENVREG
Voltage
Regulator
VDDCORE/VCAP
Timer1
PORTE(1)
Divide
Support
16 x 16
W Reg Array
17x17
Multiplier
Power-up
Timer
PORTF(1)
RF0:RF8,
RF12:RF13
Oscillator
Start-up Timer
16-Bit ALU
Power-on
Reset
16
Watchdog
Timer
PORTG(1)
Brown-out
Reset(2)
RG0:RG9,
RG12:RG15
VDD, VSS
Timer2/3
MCLR
Timer4/5
RTCC
10-Bit
A/D
Comparators
PMP/PSP
IC1-5
Note
PWM/
OC1-5
CN1-22(1)
SPI1/2
I2C1/2
UART1/2
1:
Not all pins or features are implemented on all device pinout configurations. See Table 1-2 for I/O port pin descriptions.
2:
BOR functionality is provided when the on-board voltage regulator is enabled.
DS39747F-page 10
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS
Pin Number
Function
I/O
100-Pin
Input
Buffer
64-Pin
80-Pin
AN0
16
20
25
I
ANA
AN1
15
19
24
I
ANA
AN2
14
18
23
I
ANA
AN3
13
17
22
I
ANA
AN4
12
16
21
I
ANA
AN5
11
15
20
I
ANA
AN6
17
21
26
I
ANA
AN7
18
22
27
I
ANA
AN8
21
27
32
I
ANA
AN9
22
28
33
I
ANA
Description
A/D Analog Inputs.
AN10
23
29
34
I
ANA
AN11
24
30
35
I
ANA
AN12
27
33
41
I
ANA
AN13
28
34
42
I
ANA
AN14
29
35
43
I
ANA
AN15
30
36
44
I
ANA
AVDD
19
25
30
P
—
Positive Supply for Analog Modules.
AVSS
20
26
31
P
—
Ground Reference for Analog Modules.
BCLK1
35
38
48
O
—
UART1 IrDA® Baud Clock.
BCLK2
29
35
39
O
—
UART2 IrDA® Baud Clock.
C1IN-
12
16
21
I
ANA
Comparator 1 Negative Input.
C1IN+
11
15
20
I
ANA
Comparator 1 Positive Input.
C1OUT
21
27
32
O
—
C2IN-
14
18
23
I
ANA
Comparator 2 Negative Input.
Comparator 1 Output.
C2IN+
13
17
22
I
ANA
Comparator 2 Positive Input.
C2OUT
22
28
33
O
—
Comparator 2 Output.
CLKI
39
49
63
I
ANA
CLKO
40
50
64
O
—
System Clock Output.
CN0
48
60
74
I
ST
Interrupt-on-Change Inputs.
CN1
47
59
73
I
ST
CN2
16
20
25
I
ST
CN3
15
19
24
I
ST
CN4
14
18
23
I
ST
CN5
13
17
22
I
ST
CN6
12
16
21
I
ST
CN7
11
15
20
I
ST
CN8
4
6
10
I
ST
CN9
5
7
11
I
ST
ST
CN10
6
8
12
I
CN11
8
10
14
I
ST
CN12
30
36
44
I
ST
CN13
52
66
81
I
ST
CN14
53
67
82
I
ST
CN15
54
68
83
I
ST
CN16
55
69
84
I
ST
CN17
31
39
49
I
ST
Legend:
Main Clock Input Connection.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
 2005-2012 Microchip Technology Inc.
DS39747F-page 11
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
I/O
Input
Buffer
50
I
ST
80
I
ST
47
I
ST
Function
64-Pin
80-Pin
100-Pin
CN18
32
40
CN19
—
65
CN20
—
37
Description
Interrupt-on-Change Inputs.
CN21
—
38
48
I
ST
CVREF
23
29
34
O
ANA
Comparator Voltage Reference Output.
EMUC1
15
19
24
I/O
ST
In-Circuit Emulator Clock Input/Output.
EMUD1
16
20
25
I/O
ST
In-Circuit Emulator Data Input/Output.
EMUC2
17
21
26
I/O
ST
In-Circuit Emulator Clock Input/Output.
EMUD2
18
22
27
I/O
ST
In-Circuit Emulator Data Input/Output.
ENVREG
57
71
86
I
ST
Enable for On-Chip Voltage Regulator.
IC1
42
54
68
I
ST
Input Capture Inputs.
IC2
43
55
69
I
ST
IC3
44
56
70
I
ST
IC4
45
57
71
I
ST
IC5
52
64
79
I
ST
INT0
35
45
55
I
ST
INT1
42
13
18
I
ST
INT2
43
14
19
I
ST
INT3
44
52
66
I
ST
INT4
45
53
67
I
ST
MCLR
7
9
13
I
ST
Master Clear (Device Reset) Input. This line is brought
low to cause a Reset.
OC1
46
58
72
O
—
Output Compare/PWM Outputs.
OC2
49
61
76
O
—
OC3
50
62
77
O
—
OC4
51
63
78
O
—
OC5
52
66
81
O
—
External Interrupt Inputs.
OCFA
17
21
26
I
ST
OCFB
30
36
44
I
ST
OSC1
39
49
63
I
ANA
Main Oscillator Input Connection.
OSC2
40
50
64
O
ANA
Main Oscillator Output Connection.
PGC1
15
19
24
I/O
ST
PGD1
16
20
25
I/O
ST
In-Circuit Debugger and ICSP Programming Data.
PGC2
17
21
26
I/O
ST
In-Circuit Debugger and ICSP™ Programming Clock.
PGD2
18
22
27
I/O
ST
In-Circuit Debugger and ICSP Programming Data.
Legend:
Output Compare Fault A Input.
Output Compare Fault B Input.
In-Circuit Debugger and ICSP™ Programming Clock.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
DS39747F-page 12
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
I/O
Input
Buffer
44
I/O
ST/TTL
Parallel Master Port Address Bit 0 Input (Buffered Slave
modes) and Output (Master modes).
35
43
I/O
ST/TTL
Parallel Master Port Address Bit 1 Input (Buffered Slave
modes) and Output (Master modes).
8
10
14
O
—
6
8
12
O
—
PMA4
5
7
11
O
—
PMA5
4
6
10
O
—
PMA6
16
24
29
O
—
PMA7
22
23
28
O
—
PMA8
32
40
50
O
—
PMA9
31
39
49
O
—
PMA10
28
34
42
O
—
PMA11
27
33
41
O
—
PMA12
24
30
35
O
—
PMA13
23
29
34
O
—
Function
64-Pin
80-Pin
100-Pin
PMA0
30
36
PMA1
29
PMA2
PMA3
Description
Parallel Master Port Address (Demultiplexed Master
modes).
PMBE
51
63
78
O
—
PMCS1
45
57
71
I/O
ST/TTL
PMCS2
44
56
70
O
—
Parallel Master Port Chip Select 2 Strobe/Address bit 15.
PMD0
60
76
93
I/O
ST/TTL
PMD1
61
77
94
I/O
ST/TTL
Parallel Master Port Data (Demultiplexed Master mode)
or Address/Data (Multiplexed Master modes).
PMD2
62
78
98
I/O
ST/TTL
PMD3
63
79
99
I/O
ST/TTL
PMD4
64
80
100
I/O
ST/TTL
PMD5
1
1
3
I/O
ST/TTL
PMD6
2
2
4
I/O
ST/TTL
PMD7
3
3
5
I/O
ST/TTL
PMRD
53
67
82
I/O
ST/TTL
Parallel Master Port Read Strobe.
52
66
81
I/O
ST/TTL
Parallel Master Port Write Strobe.
PMWR
Legend:
Parallel Master Port Byte Enable Strobe.
Parallel Master Port Chip Select 1 Strobe/Address bit 14.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
 2005-2012 Microchip Technology Inc.
DS39747F-page 13
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
I/O
Input
Buffer
17
I/O
ST
38
I/O
ST
—
58
I/O
ST
—
59
I/O
ST
—
—
60
I/O
ST
RA5
—
—
61
I/O
ST
RA6
—
—
91
I/O
ST
RA7
—
—
92
I/O
ST
RA9
—
23
28
I/O
ST
RA10
—
24
29
I/O
ST
RA14
—
52
66
I/O
ST
RA15
—
53
67
I/O
ST
RB0
16
20
25
I/O
ST
RB1
15
19
24
I/O
ST
RB2
14
18
23
I/O
ST
RB3
13
17
22
I/O
ST
RB4
12
16
21
I/O
ST
RB5
11
15
20
I/O
ST
RB6
17
21
26
I/O
ST
RB7
18
22
27
I/O
ST
RB8
21
27
32
I/O
ST
RB9
22
28
33
I/O
ST
Function
64-Pin
80-Pin
100-Pin
RA0
—
—
RA1
—
—
RA2
—
RA3
—
RA4
RB10
23
29
34
I/O
ST
RB11
24
30
35
I/O
ST
RB12
27
33
41
I/O
ST
RB13
28
34
42
I/O
ST
RB14
29
35
43
I/O
ST
RB15
30
36
44
I/O
ST
RC1
—
4
6
I/O
ST
RC2
—
—
7
I/O
ST
RC3
—
5
8
I/O
ST
RC4
—
—
9
I/O
ST
RC12
39
49
63
I/O
ST
RC13
47
59
73
I/O
ST
RC14
48
60
74
I/O
ST
RC15
40
50
64
I/O
ST
Legend:
Description
PORTA Digital I/O.
PORTB Digital I/O.
PORTC Digital I/O.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
DS39747F-page 14
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
I/O
Input
Buffer
72
I/O
ST
76
I/O
ST
62
77
I/O
ST
63
78
I/O
ST
52
66
81
I/O
ST
RD5
53
67
82
I/O
ST
RD6
54
68
83
I/O
ST
RD7
55
69
84
I/O
ST
RD8
42
54
68
I/O
ST
RD9
43
55
69
I/O
ST
ST
Function
64-Pin
80-Pin
100-Pin
RD0
46
58
RD1
49
61
RD2
50
RD3
51
RD4
RD10
44
56
70
I/O
RD11
45
57
71
I/O
ST
RD12
—
64
79
I/O
ST
RD13
—
65
80
I/O
ST
RD14
—
37
47
I/O
ST
RD15
—
38
48
I/O
ST
RE0
60
76
93
I/O
ST
RE1
61
77
94
I/O
ST
RE2
62
78
98
I/O
ST
RE3
63
79
99
I/O
ST
RE4
64
80
100
I/O
ST
RE5
1
1
3
I/O
ST
RE6
2
2
4
I/O
ST
RE7
3
3
5
I/O
ST
RE8
—
13
18
I/O
ST
RE9
—
14
19
I/O
ST
RF0
58
72
87
I/O
ST
RF1
59
73
88
I/O
ST
RF2
34
42
52
I/O
ST
RF3
33
41
51
I/O
ST
RF4
31
39
49
I/O
ST
RF5
32
40
50
I/O
ST
RF6
35
45
55
I/O
ST
RF7
—
44
54
I/O
ST
RF8
—
43
53
I/O
ST
RF12
—
—
40
I/O
ST
RF13
—
—
39
I/O
ST
Legend:
Description
PORTD Digital I/O.
PORTE Digital I/O.
PORTF Digital I/O.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
 2005-2012 Microchip Technology Inc.
DS39747F-page 15
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
Function
I/O
64-Pin
80-Pin
100-Pin
Input
Buffer
RG0
—
75
90
I/O
ST
RG1
—
74
89
I/O
ST
RG2
37
47
57
I/O
ST
RG3
36
46
56
I/O
ST
RG6
4
6
10
I/O
ST
RG7
5
7
11
I/O
ST
Description
PORTG Digital I/O.
RG8
6
8
12
I/O
ST
RG9
8
10
14
I/O
ST
RG12
—
—
96
I/O
ST
RG13
—
—
97
I/O
ST
RG14
—
—
95
I/O
ST
RG15
—
—
1
I/O
ST
RTCC
42
54
68
O
—
Real-Time Clock Alarm Output.
SCK1
35
45
55
O
—
SPI1 Serial Clock Output.
SCK2
4
6
10
I/O
ST
SPI2 Serial Clock Output.
SCL1
37
47
57
I/O
I2C
I2C1 Synchronous Serial Clock Input/Output.
SCL2
32
52
58
I/O
I2C
I2C2 Synchronous Serial Clock Input/Output.
SDA1
36
46
56
I/O
I2C
I2C1 Data Input/Output.
2
SDA2
31
53
59
I/O
I C
I2C2 Data Input/Output.
SDI1
34
44
54
I
ST
SPI1 Serial Data Input.
SDI2
5
7
11
I
ST
SPI2 Serial Data Input.
SDO1
33
43
53
O
—
SPI1 Serial Data Output.
SPI2 Serial Data Output.
SDO2
6
8
12
O
—
SOSCI
47
59
73
I
ANA
Secondary Oscillator/Timer1 Clock Input.
SOSCO
48
60
74
O
ANA
Secondary Oscillator/Timer1 Clock Output.
SS1
14
18
23
I/O
ST
SS2
8
10
14
I/O
ST
Slave Select Input/Frame Select Output (SPI2).
T1CK
48
60
74
I
ST
Timer1 Clock.
T2CK
—
4
6
I
ST
Timer2 External Clock Input.
T3CK
—
—
7
I
ST
Timer3 External Clock Input.
T4CK
—
5
8
I
ST
Timer4 External Clock Input.
T5CK
—
—
9
I
ST
Timer5 External Clock Input.
TCK
27
33
38
I
ST
JTAG Test Clock/Programming Clock Input.
TDI
28
34
60
I
ST
JTAG Test Data/Programming Data Input.
TDO
24
14
61
O
—
JTAG Test Data Output.
TMS
23
13
17
I
ST
JTAG Test Mode Select Input.
Legend:
Slave Select Input/Frame Select Output (SPI1).
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
DS39747F-page 16
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 1-2:
PIC24FJ128GA010 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
I/O
Input
Buffer
47
I
ST
Function
U1CTS
64-Pin
80-Pin
100-Pin
43
37
Description
UART1 Clear-to-Send Input.
U1RTS
35
38
48
O
—
UART1 Request-to-Send Output.
U1RX
34
42
52
I
ST
UART1 Receive.
U1TX
33
41
51
O
DIG
UART1 Transmit Output.
U2CTS
21
27
40
I
ST
UART2 Clear-to-Send Input.
U2RTS
29
35
39
O
—
UART2 Request-to-Send Output.
U2RX
31
39
49
I
ST
UART 2 Receive Input.
U2TX
32
40
50
O
—
UART2 Transmit Output.
VDD
10, 26, 38
12, 32, 48
2, 16, 37,
46, 62
P
—
Positive Supply for Peripheral Digital Logic and I/O Pins.
VDDCAP
56
70
85
P
—
External Filter Capacitor Connection (regulator is
enabled).
VDDCORE
56
70
85
P
—
Positive Supply for Microcontroller Core Logic (regulator
is disabled).
VREF-
15
23
28
I
ANA
VREF+
16
24
29
I
ANA
VSS
9, 25, 41
11, 31, 51
15, 36, 45,
65, 75
P
—
Legend:
A/D and Comparator Reference Voltage (Low) Input.
A/D and Comparator Reference Voltage (High) Input.
Ground Reference for Logic and I/O Pins.
TTL = TTL input buffer, ST = Schmitt Trigger input buffer, ANA = Analog level input/output, I2C™ = I2C/SMBus input buffer
 2005-2012 Microchip Technology Inc.
DS39747F-page 17
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 18
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
2.0
GUIDELINES FOR GETTING
STARTED WITH 16-BIT
MICROCONTROLLERS
FIGURE 2-1:
RECOMMENDED
MINIMUM CONNECTIONS
C2(2)
• All VDD and VSS pins
(see Section 2.2 “Power Supply Pins”)
• All AVDD and AVSS pins, regardless of whether or
not the analog device features are used
(see Section 2.2 “Power Supply Pins”)
• MCLR pin
(see Section 2.3 “Master Clear (MCLR) Pin”)
• ENVREG/DISVREG and VCAP/VDDCORE pins
(PIC24F J devices only)
(see Section 2.4 “Voltage Regulator Pins
(ENVREG/DISVREG and VCAP/VDDCORE)”)
These pins must also be connected if they are being
used in the end application:
• PGECx/PGEDx pins used for In-Circuit Serial
Programming™ (ICSP™) and debugging purposes
(see Section 2.5 “ICSP Pins”)
• OSCI and OSCO pins when an external oscillator
source is used
(see Section 2.6 “External Oscillator Pins”)
Additionally, the following pins may be required:
• VREF+/VREF- pins used when external voltage
reference for analog modules is implemented
Note:
VSS
VDD
R2
(1) (1)
(EN/DIS)VREG
MCLR
VCAP/VDDCORE
C1
C7
PIC24FJXXXX
VSS
VDD
VDD
VSS
C3(2)
C6(2)
C5(2)
VSS
The following pins must always be connected:
R1
VDD
Getting started with the PIC24FJ128GA010 family
family of 16-bit microcontrollers requires attention to a
minimal set of device pin connections before
proceeding with development.
VDD
AVSS
Basic Connection Requirements
AVDD
2.1
C4(2)
Key (all values are recommendations):
C1 through C6: 0.1 F, 20V ceramic
C7: 10 F, 6.3V or greater, tantalum or ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1:
2:
See Section 2.4 “Voltage Regulator Pins
(ENVREG/DISVREG and VCAP/VDDCORE)”
for explanation of ENVREG/DISVREG pin
connections.
The example shown is for a PIC24F device
with five VDD/VSS and AVDD/AVSS pairs.
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
The AVDD and AVSS pins must always be
connected, regardless of whether any of
the analog modules are being used.
The minimum mandatory connections are shown in
Figure 2-1.
 2005-2012 Microchip Technology Inc.
DS39747F-page 19
PIC24FJ128GA010 FAMILY
2.2
2.2.1
Power Supply Pins
DECOUPLING CAPACITORS
The use of decoupling capacitors on every pair of
power supply pins, such as VDD, VSS, AVDD and
AVSS is required.
Consider the following criteria when using decoupling
capacitors:
• Value and type of capacitor: A 0.1 F (100 nF),
10-20V capacitor is recommended. The capacitor
should be a low-ESR device with a resonance
frequency in the range of 200 MHz and higher.
Ceramic capacitors are recommended.
• Placement on the printed circuit board: The
decoupling capacitors should be placed as close
to the pins as possible. It is recommended to
place the capacitors on the same side of the
board as the device. If space is constricted, the
capacitor can be placed on another layer on the
PCB using a via; however, ensure that the trace
length from the pin to the capacitor is no greater
than 0.25 inch (6 mm).
• Handling high-frequency noise: If the board is
experiencing high-frequency noise (upward of
tens of MHz), add a second ceramic type capacitor in parallel to the above described decoupling
capacitor. The value of the second capacitor can
be in the range of 0.01 F to 0.001 F. Place this
second capacitor next to each primary decoupling
capacitor. In high-speed circuit designs, consider
implementing a decade pair of capacitances as
close to the power and ground pins as possible
(e.g., 0.1 F in parallel with 0.001 F).
• Maximizing performance: On the board layout
from the power supply circuit, run the power and
return traces to the decoupling capacitors first,
and then to the device pins. This ensures that the
decoupling capacitors are first in the power chain.
Equally important is to keep the trace length
between the capacitor and the power pins to a
minimum, thereby reducing PCB trace
inductance.
2.2.2
TANK CAPACITORS
On boards with power traces running longer than six
inches in length, it is suggested to use a tank capacitor
for integrated circuits including microcontrollers to
supply a local power source. The value of the tank
capacitor should be determined based on the trace
resistance that connects the power supply source to
the device, and the maximum current drawn by the
device in the application. In other words, select the tank
capacitor so that it meets the acceptable voltage sag at
the device. Typical values range from 4.7 F to 47 F.
DS39747F-page 20
2.3
Master Clear (MCLR) Pin
The MCLR pin provides two specific device
functions: device Reset, and device programming
and debugging. If programming and debugging are
not required in the end application, a direct
connection to VDD may be all that is required. The
addition of other components, to help increase the
application’s resistance to spurious Resets from
voltage sags, may be beneficial. A typical
configuration is shown in Figure 2-1. Other circuit
designs may be implemented, depending on the
application’s requirements.
During programming and debugging, the resistance
and capacitance that can be added to the pin must
be considered. Device programmers and debuggers
drive the MCLR pin. Consequently, specific voltage
levels (VIH and VIL) and fast signal transitions must
not be adversely affected. Therefore, specific values
of R1 and C1 will need to be adjusted based on the
application and PCB requirements. For example, it is
recommended that the capacitor, C1, be isolated
from the MCLR pin during programming and
debugging operations by using a jumper (Figure 2-2).
The jumper is replaced for normal run-time
operations.
Any components associated with the MCLR pin
should be placed within 0.25 inch (6 mm) of the pin.
FIGURE 2-2:
EXAMPLE OF MCLR PIN
CONNECTIONS
VDD
R1
R2
JP
MCLR
PIC24FXXXX
C1
Note 1:
R1  10 k is recommended. A suggested
starting value is 10 k. Ensure that the
MCLR pin VIH and VIL specifications are met.
2:
R2  470 will limit any current flowing into
MCLR from the external capacitor, C, in the
event of MCLR pin breakdown, due to
Electrostatic Discharge (ESD) or Electrical
Overstress (EOS). Ensure that the MCLR pin
VIH and VIL specifications are met.
 2005-2012 Microchip Technology Inc.
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2.4
Designers may use Figure 2-3 to evaluate ESR
equivalence of candidate devices.
Voltage Regulator Pins
(ENVREG/DISVREG and
VCAP/VDDCORE)
Note:
This section applies only to PIC24F J
devices with an on-chip voltage regulator.
The on-chip voltage regulator enable/disable pin
(ENVREG or DISVREG, depending on the device
family) must always be connected directly to either a
supply voltage or to ground. The particular connection
is determined by whether or not the regulator is to be
used:
The placement of this capacitor should be close to
VCAP/VDDCORE. It is recommended that the trace
length not exceed 0.25 inch (6 mm). Refer to
Section 27.0 “Electrical Characteristics” for
additional information.
When the regulator is disabled, the VCAP/VDDCORE pin
must be tied to a voltage supply at the VDDCORE level.
Refer to Section 27.0 “Electrical Characteristics” for
information on VDD and VDDCORE.
FIGURE 2-3:
• For ENVREG, tie to VDD to enable the regulator,
or to ground to disable the regulator
• For DISVREG, tie to ground to enable the
regulator or to VDD to disable the regulator
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED VCAP
10
Refer to Section 24.2 “On-Chip Voltage Regulator”
for details on connecting and using the on-chip
regulator.
ESR ()
1
When the regulator is enabled, a low-ESR (< 5Ω)
capacitor is required on the VCAP/VDDCORE pin to
stabilize the voltage regulator output voltage. The
VCAP/VDDCORE pin must not be connected to VDD and
must use a capacitor of 10 µF connected to ground. The
type can be ceramic or tantalum. Suitable examples of
capacitors are shown in Table 2-1. Capacitors with
equivalent specification can be used.
0.1
0.01
0.001
0.01
Note:
0.1
1
10
100
Frequency (MHz)
1000 10,000
Typical data measurement at 25°C, 0V DC bias.
.
TABLE 2-1:
SUITABLE CAPACITOR EQUIVALENTS
Make
Part #
Nominal
Capacitance
Base Tolerance
Rated Voltage
Temp. Range
TDK
C3216X7R1C106K
10 µF
±10%
16V
-55 to 125ºC
TDK
C3216X5R1C106K
10 µF
±10%
16V
-55 to 85ºC
Panasonic
ECJ-3YX1C106K
10 µF
±10%
16V
-55 to 125ºC
Panasonic
ECJ-4YB1C106K
10 µF
±10%
16V
-55 to 85ºC
Murata
GRM32DR71C106KA01L
10 µF
±10%
16V
-55 to 125ºC
Murata
GRM31CR61C106KC31L
10 µF
±10%
16V
-55 to 85ºC
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DS39747F-page 21
PIC24FJ128GA010 FAMILY
CONSIDERATIONS FOR CERAMIC
CAPACITORS
In recent years, large value, low-voltage, surface-mount
ceramic capacitors have become very cost effective in
sizes up to a few tens of microfarad. The low-ESR, small
physical size and other properties make ceramic
capacitors very attractive in many types of applications.
Ceramic capacitors are suitable for use with the internal voltage regulator of this microcontroller. However,
some care is needed in selecting the capacitor to
ensure that it maintains sufficient capacitance over the
intended operating range of the application.
Typical low-cost, 10 F ceramic capacitors are available
in X5R, X7R and Y5V dielectric ratings (other types are
also available, but are less common). The initial tolerance specifications for these types of capacitors are
often specified as ±10% to ±20% (X5R and X7R), or
-20%/+80% (Y5V). However, the effective capacitance
that these capacitors provide in an application circuit will
also vary based on additional factors, such as the
applied DC bias voltage and the temperature. The total
in-circuit tolerance is, therefore, much wider than the
initial tolerance specification.
The X5R and X7R capacitors typically exhibit satisfactory temperature stability (ex: ±15% over a wide
temperature range, but consult the manufacturer's data
sheets for exact specifications). However, Y5V capacitors typically have extreme temperature tolerance
specifications of +22%/-82%. Due to the extreme temperature tolerance, a 10 F nominal rated Y5V type
capacitor may not deliver enough total capacitance to
meet minimum internal voltage regulator stability and
transient response requirements. Therefore, Y5V
capacitors are not recommended for use with the
internal regulator if the application must operate over a
wide temperature range.
In addition to temperature tolerance, the effective
capacitance of large value ceramic capacitors can vary
substantially, based on the amount of DC voltage
applied to the capacitor. This effect can be very significant, but is often overlooked or is not always
documented.
Typical DC bias voltage vs. capacitance graph for X7R
type capacitors is shown in Figure 2-4.
FIGURE 2-4:
Capacitance Change (%)
2.4.1
DC BIAS VOLTAGE vs.
CAPACITANCE
CHARACTERISTICS
10
0
-10
16V Capacitor
-20
-30
-40
10V Capacitor
-50
-60
-70
6.3V Capacitor
-80
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
DC Bias Voltage (VDC)
When selecting a ceramic capacitor to be used with the
internal voltage regulator, it is suggested to select a
high-voltage rating, so that the operating voltage is a
small percentage of the maximum rated capacitor voltage. For example, choose a ceramic capacitor rated at
16V for the 2.5V or 1.8V core voltage. Suggested
capacitors are shown in Table 2-1.
2.5
ICSP Pins
The PGECx and PGEDx pins are used for In-Circuit
Serial Programming (ICSP) and debugging purposes.
It is recommended to keep the trace length between
the ICSP connector and the ICSP pins on the device as
short as possible. If the ICSP connector is expected to
experience an ESD event, a series resistor is recommended, with the value in the range of a few tens of
ohms, not to exceed 100Ω.
Pull-up resistors, series diodes and capacitors on the
PGECx and PGEDx pins are not recommended as they
will interfere with the programmer/debugger communications to the device. If such discrete components are
an application requirement, they should be removed
from the circuit during programming and debugging.
Alternatively, refer to the AC/DC characteristics and
timing requirements information in the respective
device Flash programming specification for information
on capacitive loading limits and pin input voltage high
(VIH) and input low (VIL) requirements.
For device emulation, ensure that the “Communication
Channel Select” (i.e., PGECx/PGEDx pins),
programmed into the device, matches the physical
connections for the ICSP to the Microchip
debugger/emulator tool.
For more information on available Microchip
development tools connection requirements, refer to
Section 26.0 “Development Support”.
DS39747F-page 22
 2005-2012 Microchip Technology Inc.
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2.6
External Oscillator Pins
FIGURE 2-5:
Many microcontrollers have options for at least two
oscillators: a high-frequency primary oscillator and a
low-frequency
secondary
oscillator
(refer to
Section 8.0 “Oscillator Configuration” for details).
The oscillator circuit should be placed on the same
side of the board as the device. Place the oscillator
circuit close to the respective oscillator pins with no
more than 0.5 inch (12 mm) between the circuit
components and the pins. The load capacitors should
be placed next to the oscillator itself, on the same side
of the board.
Use a grounded copper pour around the oscillator circuit to isolate it from surrounding circuits. The
grounded copper pour should be routed directly to the
MCU ground. Do not run any signal traces or power
traces inside the ground pour. Also, if using a two-sided
board, avoid any traces on the other side of the board
where the crystal is placed.
Single-Sided and In-line Layouts:
Copper Pour
(tied to ground)
For additional information and design guidance on
oscillator circuits, please refer to these Microchip
Application Notes, available at the corporate web site
(www.microchip.com):
• AN826, “Crystal Oscillator Basics and Crystal
Selection for rfPIC™ and PICmicro® Devices”
• AN849, “Basic PICmicro® Oscillator Design”
• AN943, “Practical PICmicro® Oscillator Analysis
and Design”
• AN949, “Making Your Oscillator Work”
Primary Oscillator
Crystal
DEVICE PINS
Primary
Oscillator
OSCI
C1
`
OSCO
GND
C2
`
SOSCO
SOSC I
Secondary
Oscillator
Crystal
Layout suggestions are shown in Figure 2-5. In-line
packages may be handled with a single-sided layout
that completely encompasses the oscillator pins. With
fine-pitch packages, it is not always possible to completely surround the pins and components. A suitable
solution is to tie the broken guard sections to a mirrored
ground layer. In all cases, the guard trace(s) must be
returned to ground.
In planning the application’s routing and I/O assignments, ensure that adjacent port pins, and other
signals in close proximity to the oscillator, are benign
(i.e., free of high frequencies, short rise and fall times
and other similar noise).
SUGGESTED
PLACEMENT OF THE
OSCILLATOR CIRCUIT
`
Sec Oscillator: C1
Sec Oscillator: C2
Fine-Pitch (Dual-Sided) Layouts:
Top Layer Copper Pour
(tied to ground)
Bottom Layer
Copper Pour
(tied to ground)
OSCO
C2
Oscillator
Crystal
GND
C1
OSCI
DEVICE PINS
 2005-2012 Microchip Technology Inc.
DS39747F-page 23
PIC24FJ128GA010 FAMILY
2.7
Configuration of Analog and
Digital Pins During ICSP
Operations
If an ICSP compliant emulator is selected as a debugger, it automatically initializes all of the A/D input pins
(ANx) as “digital” pins. Depending on the particular
device, this is done by setting all bits in the ADnPCFG
register(s), or clearing all bit in the ANSx registers.
All PIC24F devices will have either one or more
ADnPCFG registers or several ANSx registers (one for
each port); no device will have both. Refer to
Section 21.0 “10-bit High-Speed A/D Converter” for
more specific information.
The bits in these registers that correspond to the A/D
pins that initialized the emulator must not be changed
by the user application firmware; otherwise,
communication errors will result between the debugger
and the device.
If your application needs to use certain A/D pins as
analog input pins during the debug session, the user
application must modify the appropriate bits during
initialization of the A/D module, as follows:
• For devices with an ADnPCFG register, clear the
bits corresponding to the pin(s) to be configured
as analog. Do not change any other bits, particularly those corresponding to the PGECx/PGEDx
pair, at any time.
• For devices with ANSx registers, set the bits
corresponding to the pin(s) to be configured as
analog. Do not change any other bits, particularly
those corresponding to the PGECx/PGEDx pair,
at any time.
When a Microchip debugger/emulator is used as a
programmer, the user application firmware must
correctly configure the ADnPCFG or ANSx registers.
Automatic initialization of this register is only done
during debugger operation. Failure to correctly
configure the register(s) will result in all A/D pins being
recognized as analog input pins, resulting in the port
value being read as a logic '0', which may affect user
application functionality.
2.8
Unused I/Os
Unused I/O pins should be configured as outputs and
driven to a logic low state. Alternatively, connect a 1 kΩ
to 10 kΩ resistor to VSS on unused pins and drive the
output to logic low.
DS39747F-page 24
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
3.0
Note:
CPU
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 2. “CPU”
(DS39703) in the “PIC24F Family Reference
Manual” for more information.
The PIC24F CPU has a 16-bit (data) modified Harvard
architecture with an enhanced instruction set, and a
24-bit instruction word with a variable length opcode
field. The Program Counter (PC) is 23 bits wide and
addresses up to 4M instructions of user program
memory space. A single-cycle instruction prefetch
mechanism is used to help maintain throughput and
provides predictable execution. All instructions execute
in a single cycle, with the exception of instructions that
change the program flow, the double-word move
(MOV.D) instruction and the table instructions.
Overhead-free program loop constructs are supported
using the REPEAT instructions, which are interruptible
at any point.
PIC24F devices have sixteen 16-bit working registers
in the programmer’s model. Each of the working
registers can act as a data, address or address offset
register. The 16th working register (W15) operates as
a Software Stack Pointer for interrupts and calls.
The upper 32 Kbytes of the data space memory map
can optionally be mapped into program space at any
16K word boundary defined by the 8-bit Program
Space Visibility Page (PSVPAG) register. The program
to data space mapping feature lets any instruction
access program space as if it were data space.
The Instruction Set Architecture (ISA) has been significantly enhanced beyond that of the PIC18, but
maintains an acceptable level of backward compatibility.
All PIC18 instructions and addressing modes are
supported either directly or through simple macros.
Many of the ISA enhancements have been driven by
compiler efficiency needs.
For most instructions, the core is capable of executing
a data (or program data) memory read, a working register (data) read, a data memory write and a program
(instruction) memory read per instruction cycle. As a
result, three parameter instructions can be supported,
allowing trinary operations (that is, A + B = C) to be
executed in a single cycle.
A high-speed, 17-bit by 17-bit multiplier has been
included to significantly enhance the core arithmetic
capability and throughput. The multiplier supports
signed, unsigned and Mixed mode 16-bit by 16-bit or
8-bit by 8-bit integer multiplication. All multiply
instructions execute in a single cycle.
The 16-bit ALU has been enhanced with integer divide
assist hardware that supports an iterative, non-restoring
divide algorithm. It operates in conjunction with the
REPEAT instruction looping mechanism, and a selection
of iterative divide instructions, to support 32-bit (or
16-bit) divided by 16-bit integer signed and unsigned
division. All divide operations require 19 cycles to
complete but are interruptible at any cycle boundary.
The PIC24F has a vectored exception scheme with up
to 8 sources of non-maskable traps and up to
118 interrupt sources. Each interrupt source can be
assigned to one of seven priority levels.
A block diagram of the CPU is shown in Figure 3-1.
3.1
Programmer’s Model
The programmer’s model for the PIC24F is shown in
Figure 3-2. All registers in the programmer’s model are
memory mapped and can be manipulated directly by
instructions. A description of each register is provided
in Table 3-1. All registers associated with the
programmer’s model are memory mapped.
The core supports Inherent (no operand), Relative,
Literal, Memory Direct and three groups of addressing
modes. All modes support Register Direct and various
Register Indirect modes. Each group offers up to
7 addressing modes. Instructions are associated with
predefined addressing modes depending upon their
functional requirements.
 2005-2012 Microchip Technology Inc.
DS39747F-page 25
PIC24FJ128GA010 FAMILY
FIGURE 3-1:
PIC24F CPU CORE BLOCK DIAGRAM
PSV & Table
Data Access
Control Block
Data Bus
Interrupt
Controller
16
8
16
16
Data Latch
23
23
PCL
PCH
Program Counter
Loop
Stack
Control
Control
Logic
Logic
16
Data RAM
Address
Latch
23
16
RAGU
WAGU
Address Latch
Program Memory
EA MUX
Address Bus
Data Latch
ROM Latch
24
Control Signals
to Various Blocks
Instruction Reg
Hardware
Multiplier
Divide
Support
16
Literal Data
Instruction
Decode &
Control
16
16 x 16
W Register Array
16
16-Bit ALU
16
To Peripheral Modules
DS39747F-page 26
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TABLE 3-1:
CPU CORE REGISTERS
Register(s) Name
Description
W0 through W15
Working Register Array
PC
23-Bit Program Counter
SR
ALU STATUS Register
SPLIM
Stack Pointer Limit Value Register
TBLPAG
Table Memory Page Address Register
PSVPAG
Program Space Visibility Page Address Register
RCOUNT
Repeat Loop Counter Register
CORCON
CPU Control Register
FIGURE 3-2:
PROGRAMMER’S MODEL
15
Divider Working Registers
0
W0 (WREG)
W1
W2
Multiplier Registers
W3
W4
W5
W6
W7
Working/Address
Registers
W8
W9
W10
W11
W12
W13
W14
Frame Pointer
W15
Stack Pointer
0
SPLIM
0
Stack Pointer Limit
0
0
Program Counter
22
PC
7
0
TBLPAG
7
Data Table Page Address
0
PSVPAG
15
0
RCOUNT
15
Program Space Visibility
Page Address
SRH
Repeat Loop Counter
SRL
0
— — — — — — — DC IPL RA N OV Z C
2 1 0
15
STATUS Register (SR)
0
— — — — — — — — — — — — IPL3 PSV — —
Core Control Register (CORCON)
Registers or bits are shadowed for PUSH.S and POP.S instructions.
 2005-2012 Microchip Technology Inc.
DS39747F-page 27
PIC24FJ128GA010 FAMILY
3.2
CPU Control Registers
REGISTER 3-1:
SR: CPU STATUS REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0
—
—
—
—
—
—
—
DC
bit 15
bit 8
R/W-0(1)
IPL2
R/W-0(1)
(2)
IPL1
(2)
R/W-0(1)
R-0
R/W-0
R/W-0
R/W-0
R/W-0
IPL0(2)
RA
N
OV
Z
C
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-9
Unimplemented: Read as ‘0’
bit 8
DC: ALU Half Carry/Borrow bit
1 = A carry-out from the 4th low-order bit (for byte-sized data) or 8th low-order bit (for word-sized data)
of the result occurred
0 = No carry-out from the 4th or 8th low-order bit of the result has occurred
bit 7-5
IPL<2:0>: CPU Interrupt Priority Level Status bits(2)
111 = CPU Interrupt Priority Level is 7 (15); user interrupts are disabled
110 = CPU Interrupt Priority Level is 6 (14)
101 = CPU Interrupt Priority Level is 5 (13)
100 = CPU Interrupt Priority Level is 4 (12)
011 = CPU Interrupt Priority Level is 3 (11)
010 = CPU Interrupt Priority Level is 2 (10)
001 = CPU Interrupt Priority Level is 1 (9)
000 = CPU Interrupt Priority Level is 0 (8)
bit 4
RA: REPEAT Loop Active bit
1 = REPEAT loop in progress
0 = REPEAT loop not in progress
bit 3
N: ALU Negative bit
1 = Result was negative
0 = Result was non-negative (zero or positive)
bit 2
OV: ALU Overflow bit
1 = Overflow occurred for signed (2’s complement) arithmetic in this arithmetic operation
0 = No overflow has occurred
bit 1
Z: ALU Zero bit
1 = An operation, which effects the Z bit, has set it at some time in the past
0 = The most recent operation, which effects the Z bit, has cleared it (i.e., a non-zero result)
bit 0
C: ALU Carry/Borrow bit
1 = A carry-out from the Most Significant bit of the result occurred
0 = No carry-out from the Most Significant bit of the result occurred
Note 1:
2:
The IPL Status bits are read-only when NSTDIS (INTCON1<15>) = 1.
The IPL bits are concatenated with the IPL3 bit (CORCON<3>) to form the CPU Interrupt Priority Level.
The value in parentheses indicates the IPL when IPL3 = 1.
DS39747F-page 28
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 3-2:
CORCON: CORE CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
—
U-0
—
—
U-0
—
R/C-0
(1)
IPL3
R/W-0
U-0
U-0
PSV
—
—
bit 7
bit 0
Legend:
C = Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-4
Unimplemented: Read as ‘0’
bit 3
IPL3: CPU Interrupt Priority Level Status bit(1)
1 = CPU Interrupt Priority Level is greater than 7
0 = CPU Interrupt Priority Level is 7 or less
bit 2
PSV: Program Space Visibility in Data Space Enable bit
1 = Program space is visible in data space
0 = Program space is not visible in data space
bit 1-0
Unimplemented: Read as ‘0’
Note 1:
x = Bit is unknown
User interrupts are disabled when IPL3 = 1.
 2005-2012 Microchip Technology Inc.
DS39747F-page 29
PIC24FJ128GA010 FAMILY
3.3
Arithmetic Logic Unit (ALU)
The PIC24F ALU is 16 bits wide and is capable of addition, subtraction, bit shifts and logic operations. Unless
otherwise mentioned, arithmetic operations are 2’s
complement in nature. Depending on the operation, the
ALU may affect the values of the Carry (C), Zero (Z),
Negative (N), Overflow (OV) and Digit Carry (DC)
Status bits in the SR register. The C and DC Status bits
operate as Borrow and Digit Borrow bits, respectively,
for subtraction operations.
The ALU can perform 8-bit or 16-bit operations,
depending on the mode of the instruction that is used.
Data for the ALU operation can come from the W
register array, or data memory, depending on the
addressing mode of the instruction. Likewise, output
data from the ALU can be written to the W register array
or a data memory location.
The PIC24F CPU incorporates hardware support for
both multiplication and division. This includes a dedicated hardware multiplier and support hardware for
16-bit divisor division.
3.3.1
MULTIPLIER
The ALU contains a high-speed, 17-bit x 17-bit
multiplier. It supports unsigned, signed or mixed sign
operation in several multiplication modes:
1.
2.
3.
4.
5.
6.
7.
16-bit x 16-bit signed
16-bit x 16-bit unsigned
16-bit signed x 5-bit (literal) unsigned
16-bit unsigned x 16-bit unsigned
16-bit unsigned x 5-bit (literal) unsigned
16-bit unsigned x 16-bit signed
8-bit unsigned x 8-bit unsigned
TABLE 3-2:
Instruction
3.3.2
DIVIDER
The divide block supports 32-bit/16-bit and 16-bit/16-bit
signed and unsigned integer divide operation with the
following data sizes:
1.
2.
3.
4.
32-bit signed/16-bit signed divide
32-bit unsigned/16-bit unsigned divide
16-bit signed/16-bit signed divide
16-bit unsigned/16-bit unsigned divide
The quotient for all divide instructions ends up in W0
and the remainder in W1. 16-bit signed and unsigned
DIV instructions can specify any W register for both the
16-bit divisor (Wn) and any W register (aligned) pair
(W(m+1):Wm) for the 32-bit dividend. The divide algorithm takes one cycle per bit of divisor, so both
32-bit/16-bit and 16-bit/16-bit instructions take the
same number of cycles to execute.
3.3.3
MULTI-BIT SHIFT SUPPORT
The PIC24F ALU supports both single bit and
single-cycle, multi-bit arithmetic and logic shifts.
Multi-bit shifts are implemented using a shifter block,
capable of performing up to a 15-bit arithmetic right
shift, or up to a 15-bit left shift, in a single cycle. All
multi-bit shift instructions only support Register Direct
Addressing for both the operand source and result
destination.
A full summary of instructions that use the shift
operation is provided below in Table 3-2.
INSTRUCTIONS THAT USE THE SINGLE AND MULTI-BIT SHIFT OPERATION
Description
ASR
Arithmetic shift right source register by one or more bits.
SL
Shift left source register by one or more bits.
LSR
Logical shift right source register by one or more bits.
DS39747F-page 30
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
4.0
MEMORY ORGANIZATION
As Harvard architecture devices, PIC24F microcontrollers feature separate program and data memory
spaces and busses. This architecture also allows the
direct access of program memory from the data space
during code execution.
4.1
Program Address Space
The
program
address
memory
space
of
PIC24FJ128GA010 family devices is 4M instructions.
The space is addressable by a 24-bit value derived from
FIGURE 4-1:
User access to the program memory space is restricted
to the lower half of the address range (000000h to
7FFFFFh). The exception is the use of TBLRD/TBLWT
operations, which use TBLPAG<7> to permit access to
the Configuration bits and Device ID sections of the
configuration memory space.
Memory maps for the PIC24FJ128GA010 family of
devices are shown in Figure 4-1.
PROGRAM SPACE MEMORY MAP FOR PIC24FJ128GA010 FAMILY DEVICES
PIC24FJ64GA
PIC24FJ96GA
PIC24FJ128GA
GOTO Instruction
Reset Address
GOTO Instruction
Reset Address
Interrupt Vector Table
Reserved
Interrupt Vector Table
Reserved
GOTO Instruction
Reset Address
Interrupt Vector Table
Alternate Vector Table
Alternate Vector Table
User Flash
Program Memory
(22K instructions)
User Memory Space
either the 23-bit Program Counter (PC) during program
execution, or from table operation or data space
remapping, as described in Section 4.3 “Interfacing
Program and Data Memory Spaces”.
Flash Config Words
User Flash
Program Memory
(32K instructions)
Reserved
Alternate Vector Table
User Flash
Program Memory
(44K instructions)
0000FEh
000100h
000104h
0001FEh
000200h
00ABFEh
00AC00h
00FFFEh
010000h
Flash Config Words
Flash Config Words
Unimplemented
(Read ‘0’s)
000000h
000002h
000004h
0157FEh
015800h
Unimplemented
(Read ‘0’s)
Unimplemented
(Read ‘0’s)
Configuration Memory Space
7FFFFEh
800000h
Note:
Reserved
Reserved
Reserved
Device Configuration
Registers
Device Configuration
Registers
Device Configuration
Registers
Reserved
Reserved
DEVID (2)
DEVID (2)
F7FFFEh
F80000h
F8000Eh
F80010h
Reserved
DEVID (2)
FEFFFEh
FF0000h
FFFFFEh
Memory areas are not shown to scale.
 2005-2012 Microchip Technology Inc.
DS39747F-page 31
PIC24FJ128GA010 FAMILY
4.1.1
PROGRAM MEMORY
ORGANIZATION
4.1.3
In PIC24FJ128GA010 family devices, the top two words
of on-chip program memory are reserved for configuration information. On device Reset, the configuration
information is copied into the appropriate Configuration
registers. The addresses of the Flash Configuration
Word for devices in the PIC24FJ128GA010 family are
shown in Table 4-1. Their location in the memory map is
shown with the other memory vectors in Figure 4-1.
The program memory space is organized in
word-addressable blocks. Although it is treated as
24 bits wide, it is more appropriate to think of each
address of the program memory as a lower and upper
word, with the upper byte of the upper word being
unimplemented. The lower word always has an even
address, while the upper word has an odd address
(Figure 4-2).
The Configuration Words in program memory are a
compact format. The actual Configuration bits are
mapped in several different registers in the configuration
memory space. Their order in the Flash Configuration
Words do not reflect a corresponding arrangement in the
configuration space. Additional details on the device
Configuration Words are provided in Section 24.1
“Configuration Bits”.
Program memory addresses are always word-aligned
on the lower word, and addresses are incremented or
decremented by two during code execution. This
arrangement also provides compatibility with data
memory space addressing and makes it possible to
access data in the program memory space.
4.1.2
HARD MEMORY VECTORS
TABLE 4-1:
All PIC24F devices reserve the addresses between
00000h and 000200h for hard coded program execution vectors. A hardware Reset vector is provided to
redirect code execution from the default value of the
PC on device Reset to the actual start of code. A GOTO
instruction is programmed by the user at 000000h, with
the actual address for the start of code at 000002h.
PIC24F devices also have two Interrupt Vector Tables
(IVT), located from 000004h to 0000FFh, and 000100h
to 0001FFh. These vector tables allow each of the
many device interrupt sources to be handled by separate ISRs. A more detailed discussion of the Interrupt
Vector Tables is provided in Section 7.1 “Interrupt
Vector Table”.
FIGURE 4-2:
msw
Address
Device
Program
Memory
(Words)
Configuration
Word
Addresses
PIC24FJ64GA
22,016
00ABFCh:
00ABFEh
PIC24FJ96GA
32,768
00FFFCh:
00FFFEh
PIC24FJ128GA
44,032
0157FCh:
0157FEh
least significant word
most significant word
16
8
PC Address
(lsw Address)
0
000000h
000002h
000004h
000006h
00000000
00000000
00000000
00000000
Program Memory
‘Phantom’ Byte’
(read as ‘0’)
DS39747F-page 32
FLASH CONFIGURATION
WORDS FOR
PIC24FJ128GA010 FAMILY
DEVICES
PROGRAM MEMORY ORGANIZATION
23
000001h
000003h
000005h
000007h
FLASH CONFIGURATION WORDS
Instruction Width
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
4.2
Note:
Data Address Space
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 3. “Data Memory” (DS39717) in the “PIC24F Family
Reference Manual” for more information.
The PIC24F core has a separate, 16-bit wide data memory space, addressable as a single linear range. The
data space is accessed using two Address Generation
Units (AGUs), one each for read and write operations.
The data space memory map is shown in Figure 4-3.
All Effective Addresses (EAs) in the data memory
space are 16 bits wide and point to bytes within the
data space. This gives a data space address range of
64 Kbytes or 32K words. The lower half of the data
FIGURE 4-3:
memory space (that is, when EA<15> = 0) is used for
implemented memory addresses, while the upper half
(EA<15> = 1) is reserved for the Program Space Visibility area (see Section 4.3.3 “Reading Data from
Program Memory Using Program Space Visibility”).
PIC24FJ128GA010 family devices implement a total of
8 Kbytes of data memory. Should an EA point to a
location outside of this area, an all zero word or byte will
be returned.
4.2.1
DATA SPACE WIDTH
The data memory space is organized in
byte-addressable, 16-bit wide blocks. Data is aligned in
data memory and registers as 16-bit words, but all data
space EAs resolve to bytes. The Least Significant Bytes
(LSBs) of each word have even addresses, while the
Most Significant Bytes (MSBs) have odd addresses.
DATA SPACE MEMORY MAP FOR PIC24FJ128GA010 FAMILY DEVICES
MSB
Address
0001h
07FFh
0801h
Implemented
Data RAM
MSB
LSB
SFR Space
LSB
Address
0000h
07FEh
0800h
Near
Data Space
Data RAM
1FFFh
2001h
27FFh
2801h
SFR
Space
1FFEh
2000h
27FEh
2800h
Unimplemented
Read as ‘0’
7FFFh
8001h
7FFFh
8000h
Program Space
Visibility Area
FFFFh
Note:
FFFEh
Data memory areas are not shown to scale.
 2005-2012 Microchip Technology Inc.
DS39747F-page 33
PIC24FJ128GA010 FAMILY
4.2.2
DATA MEMORY ORGANIZATION
AND ALIGNMENT
A Sign-Extend (SE) instruction is provided to allow
users to translate 8-bit signed data to 16-bit signed
values. Alternatively, for 16-bit unsigned data, users
can clear the MSB of any W register by executing a
Zero-Extend (ZE) instruction on the appropriate
address.
To maintain backward compatibility with PIC® devices
and improve data space memory usage efficiency, the
PIC24F instruction set supports both word and byte
operations. As a consequence of byte accessibility, all
Effective Address calculations are internally scaled to
step through word-aligned memory. For example, the
core recognizes that Post-Modified Register Indirect
Addressing mode [Ws++] will result in a value of
Ws + 1 for byte operations and Ws + 2 for word
operations.
Although most instructions are capable of operating on
word or byte data sizes, it should be noted that some
instructions operate only on words.
4.2.3
The 8-Kbyte area, between 0000h and 1FFFh, is
referred to as the Near Data Space (NDS). Locations in
this space are directly addressable via a 13-bit absolute address field within all memory direct instructions.
The remainder of the data space is indirectly addressable. Additionally, the whole data space is addressable
using MOV instructions, which support Memory Direct
Addressing with a 16-bit address field.
Data byte reads will read the complete word which contains the byte, using the LSb of any EA to determine
which byte to select. The selected byte is placed onto
the LSB of the data path. That is, data memory and registers are organized as two parallel, byte-wide entities
with shared (word) address decode, but separate write
lines. Data byte writes only write to the corresponding
side of the array or register which matches the byte
address.
4.2.4
SFR SPACE
The first 2 Kbytes of the Near Data Space, from 0000h
to 07FFh, are primarily occupied with Special Function
Registers (SFRs). These are used by the PIC24F core
and peripheral modules for controlling the operation of
the device.
All word accesses must be aligned to an even address.
Misaligned word data fetches are not supported, so
care must be taken when mixing byte and word operations, or translating from 8-bit MCU code. If a
misaligned read or write is attempted, an address error
trap will be generated. If the error occurred on a read,
the instruction underway is completed; if it occurred on
a write, the instruction will be executed but the write will
not occur. In either case, a trap is then executed, allowing the system and/or user to examine the machine
state prior to execution of the address Fault.
SFRs are distributed among the modules that they control, and are generally grouped together by module.
Much of the SFR space contains unused addresses;
these are read as ‘0’. A diagram of the SFR space,
showing where SFRs are actually implemented, is
shown in Table 4-2. Each implemented area indicates
a 32-byte region where at least one address is implemented as an SFR. A complete listing of implemented
SFRs, including their addresses, is shown in Tables 4-3
through 4-30.
All byte loads into any W register are loaded into the
Least Significant Byte. The Most Significant Byte is not
modified.
TABLE 4-2:
NEAR DATA SPACE
IMPLEMENTED REGIONS OF SFR DATA SPACE
SFR Space Address
xx00
xx20
xx60
Core
000h
Timers
100h
200h
xx40
I
2C™
ICN
Capture
UART
A/D
300h
xx80
—
SPI
xxA0
xxC0
xxE0
Interrupts
Compare
—
—
—
—
—
—
I/O
—
—
—
—
—
—
400h
—
—
—
—
—
—
—
—
500h
—
—
—
—
—
—
—
—
600h
PMP
RTC/Comp
CRC
—
—
—
700h
—
—
System
NVM/PMD
—
—
I/O
—
—
Legend: — = No implemented SFRs in this block
DS39747F-page 34
 2005-2012 Microchip Technology Inc.
 2005-2012 Microchip Technology Inc.
TABLE 4-3:
CPU CORE REGISTERS MAP
WREG0
0000
Working Register 0
0000
WREG1
0002
Working Register 1
0000
WREG2
0004
Working Register 2
0000
WREG3
0006
Working Register 3
0000
WREG4
0008
Working Register 4
0000
WREG5
000A
Working Register 5
0000
WREG6
000C
Working Register 6
0000
WREG7
000E
Working Register 7
0000
WREG8
0010
Working Register 8
0000
WREG9
0012
Working Register 9
0000
WREG10
0014
Working Register 10
0000
WREG11
0016
Working Register 11
0000
WREG12
0018
Working Register 12
0000
WREG13
001A
Working Register 13
0000
WREG14
001C
Working Register 14
0000
WREG15
001E
Working Register 15
0800
SPLIM
0020
Stack Pointer Limit
xxxx
PCL
002E
Program Counter Low Word
PCH
0030
—
—
—
—
—
—
—
—
TBLPAG
0032
—
—
—
—
—
—
—
PSVPAG
0034
—
—
—
—
—
—
—
RCOUNT
0036
SR
0042
—
—
—
—
—
—
—
DC
IPL2
IPL1
IPL0
RA
N
OV
Z
C
0000
CORCON
0044
—
—
—
—
—
—
—
—
—
—
—
—
IPL3
PSV
—
—
0000
0052
—
—
Legend:
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0000
Program Counter High Byte
0000
—
Table Page Address Pointer
0000
—
Program Memory Visibility Page Address Pointer
0000
Repeat Loop Counter
xxxx
Disable Interrupts Counter
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
xxxx
DS39747F-page 35
PIC24FJ128GA010 FAMILY
Addr
DISICNT
Bit 15
All
Resets
File Name
INTERRUPT CONTROLLER REGISTER MAP
File
Name
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
INTCON1
0080
NSTDIS
—
—
—
—
—
—
—
—
—
—
INTCON2
0082
ALTIVT
DISI
—
—
—
—
—
—
—
—
—
IFS0
0084
—
—
AD1IF
U1TXIF
U1RXIF
SPI1IF
SPF1IF
T3IF
T2IF
OC2IF
IC2IF
IFS1
0086
U2TXIF
U2RXIF
INT2IF
T5IF
T4IF
OC4IF
OC3IF
—
—
—
—
Bit 4
Bit 3
MATHERR ADDRERR
Bit 2
Bit 1
Bit 0
All
Resets
STKERR
OSCFAIL
—
0000
INT3EP
INT2EP
INT1EP
INT0EP
0000
—
T1IF
OC1IF
IC1IF
INT0IF
0000
INT1IF
CNIF
CMIF
MI2C1IF
SI2C1IF
0000
INT4EP
IFS2
0088
—
—
PMPIF
—
—
—
OC5IF
—
IC5IF
IC4IF
IC3IF
—
—
—
SPI2IF
SPF2IF
0000
IFS3
008A
—
RTCIF
—
—
—
—
—
—
—
INT4IF
INT3IF
—
—
MI2C2IF
SI2C2IF
—
0000
IFS4
008C
—
—
—
—
—
—
—
—
—
—
—
—
CRCIF
U2ERIF
U1ERIF
—
0000
IEC0
0094
—
—
AD1IE
U1TXIE
U1RXIE
SPI1IE
SPF1IE
T3IE
T2IE
OC2IE
IC2IE
—
T1IE
OC1IE
IC1IE
INT0IE
0000
IEC1
0096
U2TXIE
U2RXIE
INT2IE
T5IE
T4IE
OC4IE
OC3IE
—
—
—
—
INT1IE
CNIE
CMIE
MI2C1IE
SI2C1IE
0000
 2005-2012 Microchip Technology Inc.
IEC2
0098
—
—
PMPIE
—
—
—
OC5IE
—
IC5IE
IC4IE
IC3IE
—
—
—
SPI2IE
SPF2IE
0000
IEC3
009A
—
RTCIE
—
—
—
—
—
—
—
INT4IE
INT3IE
—
—
MI2C2IE
SI2C2IE
—
0000
IEC4
009C
—
—
—
—
—
—
—
—
—
—
—
—
CRCIE
U2ERIE
U1ERIE
—
0000
IPC0
00A4
—
T1IP2
T1IP1
T1IP0
—
OC1IP2
OC1IP1
OC1IP0
—
IC1IP2
IC1IP1
IC1IP0
—
INT0IP2
INT0IP1
INT0IP0
4444
IPC1
00A6
—
T2IP2
T2IP1
T2IP0
—
OC2IP2
OC2IP1
OC2IP0
—
IC2IP2
IC2IP1
IC2IP0
—
—
—
—
4440
IPC2
00A8
—
—
SPI1IP2
SPI1IP1
SPI1IP0
—
SPF1IP2
SPF1IP1
SPF1IP0
—
T3IP2
T3IP1
T3IP0
4444
IPC3
00AA
—
—
—
—
—
—
—
—
—
AD1IP2
AD1IP1
AD1IP0
—
U1TXIP2
U1TXIP1
U1TXIP0
0044
IPC4
00AC
—
CNIP2
CNIP1
CNIP0
—
CMIP2
CMIP1
CMIP0
—
MI2C1IP2
MI2C1IP1
MI2C1IP0
—
SI2C1IP2
SI2C1IP1
SI2C1IP0
4444
IPC5
00AE
—
—
—
—
—
—
—
—
—
—
—
—
—
INT1IP2
INT1IP1
INT1IP0
0004
IPC6
00B0
—
T4IP2
T4IP1
T4IP0
—
OC4IP2
OC4IP1
OC4IP0
—
OC3IP2
OC3IP1
OC3IP0
—
—
—
—
4440
IPC7
00B2
—
U2TXIP2
U2TXIP1
U2TXIP0
—
U2RXIP2 U2RXIP1 U2RXIP0
—
INT2IP2
INT2IP1
INT2IP0
—
T5IP2
T5IP1
T5IP0
4444
IPC8
00B4
—
—
—
—
—
—
—
—
—
SPI2IP2
SPI2IP1
SPI2IP0
—
SPF2IP2
SPF2IP1
SPF2IP0
0044
IPC9
00B6
—
IC5IP2
IC5IP1
IC5IP0
—
IC4IP2
IC4IP1
IC4IP0
—
IC3IP2
IC3IP1
IC3IP0
—
—
—
—
4440
IPC10
00B8
—
—
—
—
—
—
—
—
—
OC5IP2
OC5IP1
OC5IP0
—
—
—
—
0040
IPC11
00BA
—
—
—
—
—
—
—
—
—
PMPIP2
PMPIP1
PMPIP0
—
—
—
—
0040
IPC12
00BC
—
—
—
—
—
—
SI2C2IP2
SI2C2IP1
SI2C2IP0
—
—
—
—
0440
IPC13
00BE
—
—
—
—
—
INT4IP2
INT4IP1
INT4IP0
—
INT3IP2
INT3IP1
INT3IP0
—
—
—
—
0440
IPC15
00C2
—
—
—
—
—
RTCIP2
RTCIP1
RTCIP0
—
—
—
—
—
—
—
—
0400
IPC16
00C4
—
CRCIP2
CRCIP1
CRCIP0
—
—
U1ERIP2
U1ERIP1
U1ERIP0
—
—
—
—
INTTREG
00E0
CPUIRQ
—
VHOLD
—
ILR3
Legend:
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
U1RXIP2 U1RXIP1 U1RXIP0
MI2C2IP2 MI2C2IP1 MI2C2IP0
U2ERIP2 U2ERIP1 U2ERIP0
ILR2
ILR1
ILR0
—
VECNUM6 VECNUM5 VECNUM4 VECNUM3 VECNUM2 VECNUM1 VECNUM0
4440
0000
PIC24FJ128GA010 FAMILY
DS39747F-page 36
TABLE 4-4:
 2005-2012 Microchip Technology Inc.
TABLE 4-5:
File
Name
Addr
ICN REGISTER MAP
Bit 5
CN1IE
CN0IE
0000
CN16IE
0000
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
CNEN1 0060
CN15IE
CN14IE
CN13IE
CN12IE
CN11IE
CN10IE
CN9IE
CN8IE
CN7IE
CN6IE
CN5IE
CN4IE
CN3IE
CN2IE
CNEN2 0062
—
—
—
—
—
—
—
—
—
—
CN21IE(1)
CN20IE(1)
CN19IE(1)
CN18IE
CN5PUE
CN4PUE
CN3PUE
CN2PUE
CN1PUE
CN0PUE
0000
CN21PUE(1) CN20PUE(1) CN19PUE(1) CN18PUE CN17PUE CN16PUE
0000
Legend:
Note 1:
—
—
—
—
—
—
—
—
—
Bit 1
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal
Implemented in 80-pin and 100-pin devices only.
TABLE 4-6:
File Name
—
Bit 2
CN17IE
Bit 13
CNPU2 006A
Bit 3
All
Resets
Bit 14
CNPU1 0068 CN15PUE CN14PUE CN13PUE CN12PUE CN11PUE CN10PUE CN9PUE CN8PUE CN7PUE CN6PUE
Bit 4
Bit 0
Bit 15
Addr
TIMER REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
TMR1
0100
Timer1 Register
PR1
0102
Period Register 1
T1CON
0104
TMR2
0106
Timer2 Register
xxxx
TMR3HLD
0108
Timer3 Holding Register (For 32-bit timer operations only)
xxxx
TMR3
010A
Timer3 Register
xxxx
PR2
010C
Period Register 2
FFFF
PR3
010E
Period Register 3
T2CON
0110
TON
—
TSIDL
—
—
—
—
—
—
TGATE
TCKPS1
TCKPS0
T32
—
TCS
—
0000
T3CON
0112
TON
—
TSIDL
—
—
—
—
—
—
TGATE
TCKPS1
TCKPS0
—
—
TCS
—
0000
TMR4
0114
Timer4 Register
xxxx
TMR5HLD
0116
Timer5 Holding Register (For 32-bit operations only)
xxxx
TMR5
0118
Timer5 Register
xxxx
PR4
011A
Period Register 4
FFFF
PR5
011C
Period Register 5
T4CON
011E
TON
—
TSIDL
—
—
—
—
—
—
TGATE
TCKPS1
TCKPS0
T32
—
TCS
—
0000
0120
TON
—
TSIDL
—
—
—
—
—
—
TGATE
TCKPS1
TCKPS0
—
—
TCS
—
0000
Legend:
—
TSIDL
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
FFFF
TGATE
TCKPS1
TCKPS0
—
TSYNC
TCS
—
0000
FFFF
FFFF
DS39747F-page 37
PIC24FJ128GA010 FAMILY
T5CON
TON
xxxx
File Name
Addr
IC1BUF
0140
IC1CON
0142
IC2BUF
0144
IC2CON
0146
IC3BUF
0148
IC3CON
014A
IC4BUF
014C
IC4CON
014E
IC5BUF
0150
IC5CON
0152
INPUT CAPTURE REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
—
—
ICSIDL
—
—
—
—
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ICI1
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
Input 1 Capture Register
—
ICTMR
xxxx
Input 2 Capture Register
—
—
ICSIDL
—
—
—
—
—
ICTMR
—
ICSIDL
—
—
—
—
—
ICI1
ICTMR
ICOV
ICBNE
ICM2
ICM1
ICM0
—
ICSIDL
—
—
—
—
—
ICI1
ICTMR
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
—
ICSIDL
—
—
—
—
—
ICTMR
0000
xxxx
ICI1
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
Input 5 Capture Register
—
0000
xxxx
0000
xxxx
ICI1
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
0000
Bit 1
Bit 0
All
Resets
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
Legend:
TABLE 4-8:
File Name
Addr
OUTPUT COMPARE REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
OC1RS
0180
Output Compare 1 Secondary Register
OC1R
0182
Output Compare 1 Register
OC1CON
0184
OC2RS
0186
 2005-2012 Microchip Technology Inc.
OC2R
0188
OC2CON
018A
OC3RS
018C
OC3R
018E
OC3CON
0190
OC4RS
0192
OC4R
0194
OC4CON
0196
OC5RS
0198
OC5R
019A
OC5CON
019C
Legend:
ICI0
Input 4 Capture Register
—
0000
xxxx
Input 3 Capture Register
—
All
Resets
—
—
OCSIDL
—
—
—
—
—
—
—
Bit 5
Bit 4
Bit 3
Bit 2
xxxx
xxxx
—
OCFLT
OCTSEL
OCM2
OCM1
OCM0
Output Compare 2 Secondary Register
Output Compare 2 Register
—
—
OCSIDL
—
—
—
—
—
—
—
xxxx
—
OCFLT
OCTSEL
OCM2
OCM1
OCM0
Output Compare 3 Secondary Register
—
OCSIDL
—
—
—
—
—
—
—
xxxx
—
OCFLT
OCTSEL
OCM2
OCM1
OCM0
Output Compare 4 Secondary Register
—
OCSIDL
—
—
—
—
—
—
—
xxxx
—
OCFLT
OCTSEL
OCM2
OCM1
OCM0
Output Compare 5 Secondary Register
—
OCSIDL
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
—
0000
xxxx
Output Compare 5 Register
—
0000
xxxx
Output Compare 4 Register
—
0000
xxxx
Output Compare 3 Register
—
0000
xxxx
xxxx
—
OCFLT
OCTSEL
OCM2
OCM1
OCM0
0000
PIC24FJ128GA010 FAMILY
DS39747F-page 38
TABLE 4-7:
 2005-2012 Microchip Technology Inc.
TABLE 4-9:
I2C1 REGISTER MAP
File Name
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
I2C1RCV
0200
—
—
—
—
—
—
—
—
Receive Register
I2C1TRN
0202
—
—
—
—
—
—
—
—
Transmit Register
I2C1BRG
0204
—
—
—
—
—
—
—
Bit 2
Bit 1
Bit 0
All
Resets
0000
00FF
Baud Rate Generator
0000
I2C1CON
0206
I2CEN
—
I2CSIDL
SCLREL
IPMIEN
A10M
DISSLW
SMEN
GCEN
STREN
ACKDT
ACKEN
RCEN
PEN
RSEN
SEN
1000
I2C1STAT
0208
ACKSTAT
TRSTAT
—
—
—
BCL
GCSTAT
ADD10
IWCOL
I2COV
D/A
P
S
R/W
RBF
TBF
0000
I2C1ADD
020A
—
—
—
—
—
—
Address Register
0000
I2C1MSK
020C
—
—
—
—
—
—
Address Mask
0000
Legend:
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-10:
File Name
I2C2 REGISTER MAP
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
I2C2RCV
0210
—
—
—
—
—
—
—
—
Receive Register
I2C2TRN
0212
—
—
—
—
—
—
—
—
Transmit Register
I2C2BRG
0214
—
—
—
—
—
—
—
I2C2CON
0216
I2CEN
—
I2CSIDL
SCLREL
IPMIEN
A10M
DISSLW
SMEN
GCEN
STREN
I2C2STAT
0218
ACKSTAT
TRSTAT
—
—
—
BCL
GCSTAT
ADD10
IWCOL
I2CPOV
I2C2ADD
021A
—
—
—
—
—
—
Address Register
0000
021C
—
—
—
—
—
—
Address Mask
0000
I2C2MSK
Legend:
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
0000
00FF
Baud Rate Generator
0000
ACKDT
ACKEN
RCEN
PEN
RSEN
SEN
D/A
P
S
R/W
RBF
TBF
1000
0000
DS39747F-page 39
PIC24FJ128GA010 FAMILY
All
Resets
File Name
Addr
UART1 REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
WAKE
LPBACK
Bit 0
All
Resets
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
ABAUD
RXINV
BRGH
PDSEL1
PDSEL0
STSEL
0000
ADDEN
RIDLE
PERR
FERR
OERR
URXDA
0110
U1MODE
0220
UARTEN
—
USIDL
IREN
RTSMD
—
UEN1
UEN0
U1STA
0222
UTXISEL1
TXINV
UTXISEL0
—
UTXBRK
UTXEN
UTXBF
TRMT
U1TXREG
0224
—
—
—
—
—
—
—
Transmit Register
xxxx
U1RXREG
0226
—
—
—
—
—
—
—
Receive Register
0000
U1BRG
0228
Legend:
Baud Rate Generator Prescaler
UART2 REGISTER MAP
File Name
Addr
U2MODE
0230
UARTEN
U2STA
0232
UTXISEL1
U2TXREG
0234
—
U2RXREG
0236
—
U2BRG
0238
Bit 15
Bit 14
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
WAKE
LPBACK
Bit 0
All
Resets
PDSEL0
STSEL
0000
OERR
URXDA
0110
Bit 13
Bit 12
—
USIDL
IREN
RTSMD
—
UEN1
UEN0
TXINV
UTXISEL0
—
UTXBRK
UTXEN
UTXBF
TRMT
—
—
—
—
—
—
Transmit Register
xxxx
—
—
—
—
—
—
Receive Register
0000
URXISEL1 URXISEL0
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
ABAUD
RXINV
BRGH
PDSEL1
ADDEN
RIDLE
PERR
FERR
Baud Rate Generator Prescaler
0000
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-13:
File Name
0000
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-12:
Legend:
URXISEL1 URXISEL0
SPI1 REGISTER MAP
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
 2005-2012 Microchip Technology Inc.
SPI1STAT
0240
SPIEN
—
SPISIDL
—
—
SRMPT
SPIROV
SRXMPT
SISEL2
SISEL1
SISEL0
SPITBF
SPIRBF
0000
SPI1CON1
0242
—
—
—
DISSCK
DISSDO
MODE16
SMP
CKE
SSEN
CKP
MSTEN
SPRE2
SPRE1
SPRE0
PPRE1
PPRE0
0000
SPI1CON2
0244
FRMEN
SPIFSD
SPIFPOL
—
—
—
—
—
—
—
—
—
—
—
SPIFE
SPIBEN
0000
SPI1BUF
0248
Legend:
SPI1 Transmit and Receive Buffer
0000
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-14:
File Name
SPIBEC2 SPIBEC1 SPIBEC0
Bit 7
SPI2 REGISTER MAP
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
SPI2STAT
0260
SPIEN
—
SPISIDL
—
—
SRMPT
SPIROV
SRXMPT
SISEL2
SISEL1
SISEL0
SPITBF
SPIRBF
0000
SPI2CON1
0262
—
—
—
DISSCK
DISSDO
MODE16
SMP
CKE
SSEN
CKP
MSTEN
SPRE2
SPRE1
SPRE0
PPRE1
PPRE0
0000
SPI2CON2
0264
FRMEN
SPIFSD
SPIFPOL
—
—
—
—
—
—
—
—
—
—
—
SPIFE
SPIBEN
0000
SPI2BUF
0268
Legend:
SPIBEC2 SPIBEC1 SPIBEC0
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
SPI2 Transmit and Receive Buffer
0000
PIC24FJ128GA010 FAMILY
DS39747F-page 40
TABLE 4-11:
 2005-2012 Microchip Technology Inc.
TABLE 4-15:
File Name
Addr
A/D REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
ADC1BUF0
0300
A/D Data Buffer 0
xxxx
ADC1BUF1
0302
A/D Data Buffer 1
xxxx
xxxx
ADC1BUF2
0304
A/D Data Buffer 2
ADC1BUF3
0306
A/D Data Buffer 3
xxxx
ADC1BUF4
0308
A/D Data Buffer 4
xxxx
ADC1BUF5
030A
A/D Data Buffer 5
xxxx
ADC1BUF6
030C
A/D Data Buffer 6
xxxx
ADC1BUF7
030E
A/D Data Buffer 7
xxxx
ADC1BUF8
0310
A/D Data Buffer 8
xxxx
0312
A/D Data Buffer 9
xxxx
0314
A/D Data Buffer 10
xxxx
ADC1BUFB
0316
A/D Data Buffer 11
xxxx
ADC1BUFC
0318
A/D Data Buffer 12
xxxx
ADC1BUFD
031A
A/D Data Buffer 13
xxxx
ADC1BUFE
031C
A/D Data Buffer 14
xxxx
ADC1BUFF
031E
A/D Data Buffer 15
AD1CON1
0320
ADON
—
ADSIDL
AD1CON2
0322
VCFG2
VCFG1
VCFG0
AD1CON3
0324
ADRC
—
—
—
FORM1
FORM0
SSRC2
xxxx
—
—
SSRC1
SSRC0
—
—
ASAM
SAMP
DONE
r
—
CSCNA
—
—
BUFS
—
SMPI3
SMPI2
SMPI1
SMPI0
BUFM
ALTS
0000
SAMC4
SAMC3
SAMC2
SAMC1
SAMC0
ADCS7
ADCS6
ADCS5
ADCS4
ADCS3
ADCS2
ADCS1
ADCS0
0000
0000
AD1CHS
0328
CH0NB
—
—
—
CH0SB3
CH0SB2
CH0SB1
CH0SB0
CH0NA
—
—
—
CH0SA3
CH0SA2
CH0SA1
CH0SA0
0000
AD1PCFG
032C
PCFG15
PCFG14
PCFG13
PCFG12
PCFG11
PCFG10
PCFG9
PCFG8
PCFG7
PCFG6
PCFG5
PCFG4
PCFG3
PCFG2
PCFG1
PCFG0
0000
AD1CSSL
0330
CSSL15
CSSL14
CSSL13
CSSL12
CSSL11
CSSL10
CSSL9
CSSL8
CSSL7
CSSL6
CSSL5
CSSL4
CSSL3
CSSL2
CSSL1
CSSL0
0000
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
Legend:
x = unknown value on Reset; — = unimplemented, read as ‘0’; r = reserved, maintain as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-16:
PORTA REGISTER MAP
DS39747F-page 41
File Name
Addr
TRISA
02C0
PORTA
02C2
RA15(1)
RA14(1)
LATA
02C4
LATA15(1)
ODCA
06C0
ODA15(1)
Legend:
Note 1:
2:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
—
—
—
—
—
—
RA10(1)
RA9(1)
—
RA7
RA6
RA5(2)
RA4(2)
RA3(2)
RA2(2)
RA1(2)
RA0(2)
xxxx
LATA14(1)
—
—
—
LATA10(1)
LATA9(1)
—
LATA7
LATA6
LATA5(2)
LATA4(2)
LATA3(2)
LATA2(2)
LATA1(2)
LATA0(2)
xxxx
ODA14(1)
—
—
—
ODA10(1)
ODA9(1)
—
ODA7
ODA6
ODA5(2)
ODA4(2)
ODA3(2)
ODA2(2)
ODA1(2)
ODA0(2)
0000
TRISA15(1) TRISA14(1)
Bit 10
Bit 9
TRISA10(1) TRISA9(1)
Bit 8
—
Bit 7
Bit 6
Bit 5
TRISA7(2) TRISA6(2) TRISA5(2)
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 80-pin and 100-pin devices only.
Implemented in 100-pin devices only.
Bit 4
TRISA4(2) TRISA3(2) TRISA2(2) TRISA1(2) TRISA0(2)
C6FF
PIC24FJ128GA010 FAMILY
ADC1BUF9
ADC1BUFA
File Name
PORTB REGISTER MAP
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
TRISB13(1) TRISB12(1) TRISB11(1) TRISB10(1)
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
TRISB
02C6
TRISB15
TRISB14
TRISB9
TRISB8
TRISB7
TRISB6
TRISB5
TRISB4
TRISB3
TRISB2
TRISB1
TRISB0
FFFF
PORTB
02C8
RB15
RB14
RB13(1)
RB12(1)
RB11(1)
RB10(1)
RB9
RB8
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx
LATB
02CA
LATB15
LATB14
LATB13(1)
LATB12(1)
LATB11(1)
LATB10(1)
LATB9
LATB8
LATB7
LATB6
LATB5
LATB4
LATB3
LATB2
LATB1
LATB0
xxxx
ODCB
06C6
ODB15
ODB14
ODB13(1)
ODB12(1)
ODB11(1)
ODB10(1)
ODB9
ODB8
ODB7
ODB6
ODB5
ODB4
ODB3
ODB2
ODB1
ODB0
0000
Legend:
Note 1:
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices
Unimplemented when JTAG is enabled.
TABLE 4-18:
PORTC REGISTER MAP
File Name
Addr
TRISC
02CC
PORTC
02CE
RC15
RC14
RC13
LATC
02D0
LATC15
LATC14
ODCC
06CC
ODC15
ODC14
Legend:
Note 1:
2:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 2
—
F01E
—
xxxx
LATC1(1)
—
xxxx
ODC1(1)
—
0000
All
Resets
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 1
—
—
—
—
—
—
—
RC12
—
—
—
—
—
—
—
RC4(2)
RC3(1)
RC2(2)
RC1(1)
LATC13
LATC12
—
—
—
—
—
—
—
LATC4(2)
LATC3(1)
LATC2(2)
ODC13
ODC12
—
—
—
—
—
—
—
ODC4(2)
ODC3(1)
ODC2(2)
TRISC4(2) TRISC3(1) TRISC2(2) TRISC1(1)
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 80-pin and 100-pin devices only.
Implemented in 100-pin devices only
TABLE 4-19:
PORTD REGISTER MAP
 2005-2012 Microchip Technology Inc.
File Name
Addr
TRISD
02D2
PORTD
02D4
RD15(1)
RD14(1)
RD13(1)
RD12(1)
LATD
02D6
LATD15(1)
LATD14(1)
LATD13(1)
ODCD
06D2
ODD15(1)
ODD14(1)
ODD13(1)
Legend:
Note 1:
Bit 3
All
Resets
Bit 10
TRISC15 TRISC14 TRISC13 TRISC12
Bit 4
Bit 0
Bit 11
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TRISD11
TRISD10
TRISD9
TRISD8
TRISD7
TRISD6
TRISD5
TRISD4
TRISD3
TRISD2
TRISD1
TRISD0
FFFF
RD11
RD10
RD9
RD8
RD7
RD6
RD5
RD4
RD3
RD2
RD1
RD0
xxxx
LATD12(1)
LATD11
LATD10
LATD9
LATD8
LATD7
LATD6
LATD5
LATD4
LATD3
LATD2
LATD1
LATD0
xxxx
ODD12(1)
ODD11
ODD10
ODD9
ODD8
ODD7
ODD6
ODD5
ODD4
ODD3
ODD2
ODD1
ODD0
0000
TRISD15(1) TRISD14(1) TRISD13(1) TRISD12(1)
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 80-pin and 100-pin devices only.
PIC24FJ128GA010 FAMILY
DS39747F-page 42
TABLE 4-17:
 2005-2012 Microchip Technology Inc.
TABLE 4-20:
PORTE REGISTER MAP
File Name
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
TRISE
02D8
—
—
—
—
—
—
PORTE
02DA
—
—
—
—
—
—
RE9(1)
RE8(1)
LATE
02DC
—
—
—
—
—
—
LATE9(1)
—
(1)
ODCE
Legend:
Note 1:
06D8
—
—
—
—
—
Bit 9
Bit 8
All
Resets
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TRISE7
TRISE6
TRISE5
TRISE4
TRISE3
TRISE2
TRISE1
TRISE0
03FF
RE7
RE6
RE5
RE4
RE3
RE2
RE1
RE0
xxxx
LATE8(1)
LATE7
LATE6
LATE5
LATE4
LATE3
LATE2
LATE1
LATE0
xxxx
ODE8(1)
ODE7
ODE6
ODE5
ODE4
ODE3
ODE2
ODE1
ODE0
0000
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
TRISE9(1) TRISE8(1)
ODE9
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 80-pin and 100-pin devices only.
TABLE 4-21:
PORTF REGISTER MAP
File Name
Addr
Bit 15
Bit 14
TRISF
02DE
—
—
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
TRISF13(1) TRISF12(1)
Bit 8
Bit 7
TRISF8(2) TRISF7(2)
—
—
—
TRISF6
TRISF5
TRISF4
TRISF3
TRISF2
TRISF1
TRISF0
31FF
RF12(1)
—
—
—
RF8(2)
RF7(2)
RF6
RF5
RF4
RF3
RF2
RF1
RF0
xxxx
02E0
—
—
LATF
02E2
—
—
LATF13(1)
LATF12(1)
—
—
—
LATF8(2)
LATF7(2)
LATF6
LATF5
LATF4
LATF3
LATF2
LATF1
LATF0
xxxx
ODCF
06DE
—
—
ODF13(1)
ODF12(1)
—
—
—
ODF8(2)
ODF7(2)
ODF6
ODF5
ODF4
ODF3
ODF2
ODF1
ODF0
0000
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 0
All
Resets
Legend:
Note 1:
2:
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 100-pin devices only.
Implemented in 80-pin and 100-pin devices only.
TABLE 4-22:
PORTG REGISTER MAP
File Name
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
TRISG14(1) TRISG13(1) TRISG12(1)
Bit 8
Bit 7
Bit 1
TRISG1(2) TRISG0(2)
TRISG
02E4
TRISG15
—
—
TRISG9
TRISG6
—
—
TRISG3
TRISG2
PORTG
02E6
RG15
RG14(1)
RG13(1)
RG12(1)
—
—
RG9
RG8
RG7
RG6
—
—
RG3
RG2
RG1(2)
RG0(2)
xxxx
LATG
02E8
LATG15
LATG14(1)
LATG13(1)
LATG12(1)
—
—
LATG9
LATG8
LATG7
LATG6
—
—
LATG3
LATG2
LATG1(2)
LATG0(2)
xxxx
ODCG
06E4
ODG15
ODG14(1)
ODG13(1)
ODG12(1)
—
—
ODG9
ODG8
ODG7
ODG6
—
—
ODG3
ODG2
ODG1(2)
ODG0(2)
0000
Legend:
Note 1:
2:
DS39747F-page 43
PADCFG1
Legend:
F3CF
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
Implemented in 100-pin devices only.
Implemented in 80-pin and 100-pin devices only.
TABLE 4-23:
File Name
TRISG8 TRISG7
PAD CONFIGURATION MAP
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
02FC
—
—
—
—
—
—
—
—
—
—
—
—
—
—
RTSECSEL
PMPTTL
0000
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal for 100-pin devices.
PIC24FJ128GA010 FAMILY
PORTF
RF13(1)
File Name
PARALLEL MASTER/SLAVE PORT REGISTER MAP
Addr
Bit 15
PMCON
0600
PMPEN
—
PSIDL
PMMODE
0602
BUSY
IRQM1
IRQM0
CS2
CS1
PMADDR(1)
PMDOUT1(1)
0604
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
ADRMUX1 ADRMUX0 PTBEEN PTWREN PTRDEN
INCM1
INCM0
MODE16
MODE1
MODE0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
0000
CSF1
CSF0
ALP
CS2P
CS1P
BEP
WRSP
RDSP
WAITB1
WAITB0
WAITM3
WAITM2
WAITM1
WAITM0
WAITE1
WAITE0
Parallel Port Destination Address<13:0> (Master modes)
0000
0000
Parallel Port Data Out Register 1 (Buffers 0 and 1)
0000
PMDOUT2
0606
Parallel Port Data Out Register 2 (Buffers 2 and 3)
0000
PMDIN1
0608
Parallel Port Data In Register 1 (Buffers 0 and 1)
0000
PMDIN2
060A
Parallel Port Data In Register 2 (Buffers 2 and 3)
PMAEN
060C
PTEN15
PTEN14
PTEN13
PTEN12
PTEN11
PTEN10
PTEN9
PTEN8
PTEN7
PTEN6
PTEN5
PTEN4
PTEN3
PTEN2
PTEN1
PTEN0
0000
PMSTAT
060E
IBF
IBOV
—
—
IB3F
IB2F
IB1F
IB0F
OBE
OBUF
—
—
OB3E
OB2E
OB1E
OB0E
008F
Legend:
Note 1:
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
PMADDR and PMDOUT1 share the same physical register. The register functions as PMDOUT1 only in Slave modes and as PMADDR only in Master modes.
TABLE 4-25:
File Name
Addr
ALRMVAL
0620
ALCFGRPT
0622
RTCVAL
0624
RCFGCAL(1)
0626
Legend:
Note 1:
REAL-TIME CLOCK AND CALENDAR REGISTER MAP
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
ALRMEN
CHIME
AMASK3
AMASK2
AMASK1
Bit 9
Bit 8
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ARPT5
ARPT4
ARPT3
ARPT2
ARPT1
ARPT0
CAL5
CAL4
CAL3
CAL2
CAL1
CAL0
Alarm Value Register Window Based on ALRMPTR<1:0>
AMASK0 ALRMPTR1 ALRMPTR0
ARPT7
ARPT6
RTCEN
—
RTCWREN RTCSYNC HALFSEC
RTCOE
RTCPTR1
RTCPTR0
CAL7
All
Resets
xxxx
RTCC Value Register Window Based on RTCPTR<1:0>
CAL6
0000
xxxx
0000
DUAL COMPARATOR REGISTER MAP
 2005-2012 Microchip Technology Inc.
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
CMCON
0630
CMIDL
—
C2EVT
C1EVT
C2EN
C1EN
C2OUTEN
C1OUTEN
CVRCON
0632
—
—
—
—
—
—
—
—
Legend:
Bit 7
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
RCFGCAL register Reset value is dependent on the type of Reset.
TABLE 4-26:
File Name
0000
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
Bit 7
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
C2INV
C1INV
C2NEG
C2POS
C1NEG
C1POS
0000
CVRR
CVRSS
CVR3
CVR2
CVR1
CVR0
0000
Bit 6
Bit 5
C2OUT
C1OUT
CVREN
CVROE
PIC24FJ128GA010 FAMILY
DS39747F-page 44
TABLE 4-24:
 2005-2012 Microchip Technology Inc.
TABLE 4-27:
File Name
CRC REGISTER MAP
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
—
CRCGO
PLEN3
PLEN2
PLEN1
PLEN0
0000
Bit 15
Bit 14
Bit 13
CRCCON
0640
—
—
CSIDL
CRCXOR
0642
CRC XOR Polynomial Register
CRCDAT
0644
CRC Data Input Register
0000
CRCWDAT
0646
CRC Result Register
0000
Legend:
Bit 12
Bit 5
Addr
VWORD4 VWORD3 VWORD2 VWORD1 VWORD0 CRCFUL CRCMPT
0000
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
TABLE 4-28:
SYSTEM REGISTER MAP
File Name
Addr
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
All
Resets
RCON
0740
TRAPR
IOPUWR
—
—
—
—
CM
VREGS
EXTR
SWR
SWDTEN
WDTO
SLEEP
IDLE
BOR
POR
xxxx(1)
OSCCON
0742
—
COSC2
COSC1
COSC0
—
NOSC2
NOSC1
NOSC0
CLKLOCK
—
LOCK
—
CF
—
SOSCEN
OSWEN
xxxx(2)
CLKDIV
0744
ROI
DOZE2
DOZE1
DOZE0
DOZEN
RCDIV2
RCDIV1
RCDIV0
—
—
—
—
—
—
—
—
OSCTUN
0748
—
—
—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
RCON register Reset values are dependent on the type of Reset.
OSCCON register Reset values are dependent on the FOSC Configuration bits and by type of Reset.
TABLE 4-29:
NVM REGISTER MAP
File Name
Addr
Bit 15
Bit 14
Bit 13
NVMCON
0760
WR
WREN
NVMKEY
0766
—
—
Legend:
Note 1:
Bit 12
Bit 11
Bit 10
Bit 9
WRERR
—
—
—
Bit 8
Bit 7
Bit 6
Bit 5
—
—
—
—
—
—
—
ERASE
—
—
—
Bit 4
—
Bit 3
Bit 2
Bit 1
Bit 0
NVMOP3 NVMOP2 NVMOP1 NVMOP0
NVMKEY<7:0>
All
Resets
0000(1)
0000
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
Reset value shown is for POR only. Value on other Reset states is dependent on the state of memory write or erase operations at the time of Reset.
TABLE 4-30:
PMD REGISTER MAP
DS39747F-page 45
File Name
Addr
Bit 15
Bit 14
Bit 13
PMD1
0770
T5MD
T4MD
T3MD
T2MD
T1MD
—
PMD2
0772
—
—
—
IC5MD
IC4MD
IC3MD
PMD3
0774
—
—
—
—
—
Legend:
0100
0000
Bit 12
Bit 11
Bit 10
Bit 9
Bit 0
All
Resets
—
—
ADC1MD
0000
OC3MD
OC2MD
OC1MD
0000
I2C2MD
—
0000
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
—
—
I2C1MD
U2MD
U1MD
SPI2MD
SPI1MD
IC2MD
IC1MD
—
—
—
OC5MD
OC4MD
PMPMD
CRCPMD
—
—
—
—
—
CMPMD RTCCMD
— = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
Bit 1
Bit 8
Bit 2
PIC24FJ128GA010 FAMILY
Legend:
Note 1:
2:
TUN<5:0>
PIC24FJ128GA010 FAMILY
4.2.5
SOFTWARE STACK
4.3
In addition to its use as a working register, the W15 register in PIC24F devices is also used as a Software
Stack Pointer. The pointer always points to the first
available free word and grows from lower to higher
addresses. It predecrements for stack pops and postincrements for stack pushes, as shown in Figure 4-4.
Note that for a PC push during any CALL instruction,
the MSB of the PC is zero-extended before the push,
ensuring that the MSB is always clear.
Note:
A PC push during exception processing
will concatenate the SRL register to the
MSB of the PC prior to the push.
The Stack Pointer Limit register (SPLIM) associated
with the Stack Pointer sets an upper address boundary
for the stack. SPLIM is uninitialized at Reset. As is the
case for the Stack Pointer, SPLIM<0> is forced to ‘0’
because all stack operations must be word-aligned.
Whenever an EA is generated using W15 as a source
or destination pointer, the resulting address is compared with the value in SPLIM. If the contents of the
Stack Pointer (W15) and the SPLIM register are equal
and a push operation is performed, a stack error trap
will not occur. The stack error trap will occur on a
subsequent push operation. Thus, for example, if it is
desirable to cause a stack error trap when the stack
grows beyond address, 2000h, in RAM, initialize the
SPLIM with the value, 1FFEh.
Similarly, a Stack Pointer underflow (stack error) trap is
generated when the Stack Pointer address is found to
be less than 0800h. This prevents the stack from
interfering with the Special Function Register (SFR)
space.
A write to the SPLIM register should not be immediately
followed by an indirect read operation using W15.
FIGURE 4-4:
Stack Grows Towards
Higher Address
0000h
CALL STACK FRAME
15
0
PC<15:0>
000000000 PC<22:16>
<Free Word>
W15 (before CALL)
W15 (after CALL)
POP : [--W15]
PUSH : [W15++]
DS39747F-page 46
Interfacing Program and Data
Memory Spaces
The PIC24F architecture uses a 24-bit wide program
space and 16-bit wide data space. The architecture is
also a modified Harvard scheme, meaning that data
can also be present in the program space. To use this
data successfully, it must be accessed in a way that
preserves the alignment of information in both spaces.
Aside from normal execution, the PIC24F architecture
provides two methods by which program space can be
accessed during operation:
• Using table instructions to access individual bytes
or words anywhere in the program space
• Remapping a portion of the program space into
the data space (Program Space Visibility)
Table instructions allow an application to read or write
to small areas of the program memory. This makes the
method ideal for accessing data tables that need to be
updated from time to time. It also allows access to all
bytes of the program word. The remapping method
allows an application to access a large block of data on
a read-only basis, which is ideal for look ups from a
large table of static data. It can only access the least
significant word of the program word.
4.3.1
ADDRESSING PROGRAM SPACE
Since the address ranges for the data and program
spaces are 16 and 24 bits, respectively, a method is
needed to create a 23-bit or 24-bit program address
from 16-bit data registers. The solution depends on the
interface method to be used.
For table operations, the 8-bit Table Page register
(TBLPAG) is used to define a 32K word region within
the program space. This is concatenated with a 16-bit
EA to arrive at a full 24-bit program space address. In
this format, the Most Significant bit of TBLPAG is used
to determine if the operation occurs in the user memory
(TBLPAG<7> = 0) or the configuration memory
(TBLPAG<7> = 1).
For remapping operations, the 8-bit Program Space
Visibility register (PSVPAG) is used to define a
16K word page in the program space. When the Most
Significant bit of the EA is ‘1’, PSVPAG is concatenated
with the lower 15 bits of the EA to form a 23-bit program
space address. Unlike table operations, this limits
remapping operations strictly to the user memory area.
Table 4-31 and Figure 4-5 show how the program EA is
created for table operations and remapping accesses
from the data EA. Here, P<23:0> refers to a program
space word, whereas D<15:0> refers to a data space
word.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 4-31:
PROGRAM SPACE ADDRESS CONSTRUCTION
Program Space Address
Access
Space
Access Type
<23>
<22:16>
<15>
<14:1>
<0>
Instruction Access
(Code Execution)
User
TBLRD/TBLWT
(Byte/Word Read/Write)
User
TBLPAG<7:0>
Data EA<15:0>
0xxx xxxx
xxxx xxxx xxxx xxxx
Configuration
TBLPAG<7:0>
Data EA<15:0>
1xxx xxxx
xxxx xxxx xxxx xxxx
0
0xx xxxx xxxx xxxx xxxx xxx0
Program Space Visibility
(Block Remap/Read)
Note 1:
PC<22:1>
0
User
0
PSVPAG<7:0>
Data EA<14:0>(1)
0
xxxx xxxx
xxx xxxx xxxx xxxx
Data EA<15> is always ‘1’ in this case, but is not used in calculating the program space address. Bit 15 of
the address is PSVPAG<0>.
FIGURE 4-5:
DATA ACCESS FROM PROGRAM SPACE ADDRESS GENERATION
Program Counter(1)
Program Counter
0
0
23 Bits
EA
Table Operations(2)
1/0
1/0
TBLPAG
8 Bits
16 Bits
24 Bits
Select
Program Space
(Remapping)
Visibility(1)
0
EA
1
0
PSVPAG
8 Bits
15 Bits
23 Bits
User/Configuration
Space Select
Byte Select
Note 1: The LSb of program space addresses is always fixed as ‘0’ in order to maintain word alignment of
data in the program and data spaces.
2: Table operations are not required to be word-aligned. Table read operations are permitted in the
configuration memory space.
 2005-2012 Microchip Technology Inc.
DS39747F-page 47
PIC24FJ128GA010 FAMILY
4.3.2
DATA ACCESS FROM PROGRAM
MEMORY USING TABLE
INSTRUCTIONS
The TBLRDL and TBLWTL instructions offer a direct
method of reading or writing the lower word of any
address within the program space, without going
through data space. The TBLRDH and TBLWTH instructions are the only method to read or write the upper 8 bits
of a program space word as data.
The PC is incremented by two for each successive
24-bit program word. This allows program memory
addresses to directly map to data space addresses.
Program memory can thus be regarded as two 16-bit,
word-wide address spaces, residing side by side, each
with the same address range. TBLRDL and TBLWTL
access the space which contains the least significant
data word, and TBLRDH and TBLWTH access the space
which contains the upper data byte.
Two table instructions are provided to move byte or
word-sized (16-bit) data to and from program space.
Both function as either byte or word operations.
1.
TBLRDL (Table Read Low): In Word mode, it
maps the lower word of the program space
location (P<15:0>) to a data address (D<15:0>).
In Byte mode, either the upper or lower byte of
the lower program word is mapped to the lower
byte of a data address. The upper byte is
selected when byte select is ‘1’; the lower byte
is selected when it is ‘0’.
FIGURE 4-6:
2.
TBLRDH (Table Read High): In Word mode, it
maps the entire upper word of a program address
(P<23:16>) to a data address. Note that
D<15:8>, the “phantom byte”, will always be ‘0’.
In Byte mode, it maps the upper or lower byte of
the program word to D<7:0> of the data
address, as above. Note that the data will
always be ‘0’ when the upper “phantom” byte is
selected (byte select = 1).
In a similar fashion, two table instructions, TBLWTH
and TBLWTL, are used to write individual bytes or
words to a program space address. The details of
their operation are explained in Section 5.0 “Flash
Program Memory”.
For all table operations, the area of program memory
space to be accessed is determined by the Table Page
register (TBLPAG). TBLPAG covers the entire program
memory space of the device, including user and configuration spaces. When TBLPAG<7> = 0, the Table Page
is located in the user memory space. When
TBLPAG<7> = 1, the page is located in configuration
space.
Note:
Only table read operations will execute in
the configuration memory space, and only
then, in implemented areas such as the
Device ID. Table write operations are not
allowed.
ACCESSING PROGRAM MEMORY WITH TABLE INSTRUCTIONS
Program Space
TBLPAG
02
Data EA<15:0>
23
15
0
000000h
23
16
8
0
00000000
020000h
030000h
00000000
00000000
00000000
‘Phantom’ Byte
TBLRDH.B (Wn<0> = 0)
TBLRDL.B (Wn<0> = 1)
TBLRDL.B (Wn<0> = 0)
TBLRDL.W
800000h
DS39747F-page 48
The address for the table operation is determined by the data EA
within the page defined by the TBLPAG register.
Only read operations are shown; write operations are also valid in
the user memory area.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
4.3.3
READING DATA FROM PROGRAM
MEMORY USING PROGRAM SPACE
VISIBILITY
The upper 32 Kbytes of data space may optionally be
mapped into any 16K word page of the program space.
This provides transparent access of stored constant
data from the data space without the need to use
special instructions (i.e., TBLRDL/H).
Program space access through the data space occurs
if the Most Significant bit of the data space EA is ‘1’ and
Program Space Visibility is enabled by setting the PSV
bit in the Core Control register (CORCON<2>). The
location of the program memory space to be mapped
into the data space is determined by the Program
Space Visibility Page register (PSVPAG). This 8-bit
register defines any one of 256 possible pages of
16K words in program space. In effect, PSVPAG functions as the upper 8 bits of the program memory
address, with the 15 bits of the EA functioning as the
lower bits. Note that by incrementing the PC by 2 for
each program memory word, the lower 15 bits of data
space addresses directly map to the lower 15 bits in the
corresponding program space addresses.
Data reads to this area add an additional cycle to the
instruction being executed, since two program memory
fetches are required.
Although each data space address, 8000h and higher,
maps directly into a corresponding program memory
address (see Figure 4-7), only the lower 16 bits of the
FIGURE 4-7:
24-bit program word are used to contain the data. The
upper 8 bits of any program space locations used as
data should be programmed with ‘1111 1111’ or
‘0000 0000’ to force a NOP. This prevents possible
issues should the area of code ever be accidentally
executed.
PSV access is temporarily disabled during
table reads/writes.
Note:
For operations that use PSV and are executed outside
a REPEAT loop, the MOV and MOV.D instructions will
require one instruction cycle in addition to the specified
execution time. All other instructions will require two
instruction cycles in addition to the specified execution
time.
For operations that use PSV which are executed inside
a REPEAT loop, there will be some instances that
require two instruction cycles in addition to the
specified execution time of the instruction:
• Execution in the first iteration
• Execution in the last iteration
• Execution prior to exiting the loop due to an
interrupt
• Execution upon re-entering the loop after an
interrupt is serviced
Any other iteration of the REPEAT loop will allow the
instruction accessing data, using PSV, to execute in a
single cycle.
PROGRAM SPACE VISIBILITY OPERATION
When CORCON<2> = 1 and EA<15> = 1:
Program Space
PSVPAG
02
23
15
Data Space
0
000000h
0000h
Data EA<14:0>
010000h
018000h
The data in the page
designated by PSVPAG is mapped into
the upper half of the
data memory
space....
8000h
PSV Area
FFFFh
800000h
 2005-2012 Microchip Technology Inc.
...while the lower 15
bits of the EA specify
an exact address
within the PSV area.
This corresponds
exactly to the same
lower 15 bits of the
actual program space
address.
DS39747F-page 49
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 50
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
5.0
controller just before shipping the product. This also
allows the most recent firmware or a custom firmware
to be programmed.
FLASH PROGRAM MEMORY
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 4. “Program
Memory” (DS39715) in the “PIC24F
Family Reference Manual” for more
information.
RTSP is accomplished using TBLRD (table read) and
TBLWT (table write) instructions. With RTSP, the user
may write program memory data in blocks of 64 instructions (192 bytes) at a time, and erase program memory
in blocks of 512 instructions (1536 bytes) at a time.
5.1
The PIC24FJ128GA010 family of devices contains
internal Flash program memory for storing and executing application code. The memory is readable, writable
and erasable during normal operation over the
specified VDD range.
Regardless of the method used, all programming of
Flash memory is done with the table read and table
write instructions. These allow direct read and write
access to the program memory space from the data
memory while the device is in normal operating mode.
The 24-bit target address in the program memory is
formed using the TBLPAG<7:0> bits and the Effective
Address (EA) from a W register specified in the table
instruction, as shown in Figure 5-1.
Flash memory can be programmed in four ways:
1.
2.
3.
4.
In-Circuit Serial Programming™ (ICSP™)
Run-Time Self-Programming (RTSP)
JTAG
Enhanced In-Circuit Serial Programming
(Enhanced ICSP)
The TBLRDL and the TBLWTL instructions are used to
read or write to bits<15:0> of program memory.
TBLRDL and TBLWTL can access program memory in
both Word and Byte modes.
ICSP allows a PIC24FJ128GA010 family device to be
serially programmed while in the end application circuit.
This is simply done with two lines for Programming
Clock and Programming Data (which are named PGCx
and PGDx, respectively), and three other lines for
power (VDD), ground (VSS) and Master Clear (MCLR).
This allows customers to manufacture boards with
unprogrammed devices and then program the micro-
FIGURE 5-1:
Table Instructions and Flash
Programming
The TBLRDH and TBLWTH instructions are used to read
or write to bits<23:16> of program memory. TBLRDH
and TBLWTH can also access program memory in Word
or Byte mode.
ADDRESSING FOR TABLE REGISTERS
24 Bits
Using
Program
Counter
Program Counter
0
0
Working Reg EA
Using
Table
Instruction
User/Configuration
Space Select
 2005-2012 Microchip Technology Inc.
1/0
TBLPAG Reg
8 Bits
16 Bits
24-Bit EA
Byte
Select
DS39747F-page 51
PIC24FJ128GA010 FAMILY
5.2
RTSP Operation
The PIC24F Flash program memory array is organized
into rows of 64 instructions or 192 bytes. RTSP allows
the user to erase blocks of eight rows (512 instructions)
at a time and to program one row at a time. It is also
possible to program single words.
The 8-row erase blocks and single row write blocks are
edge-aligned, from the beginning of program memory,
on boundaries of 1536 bytes and 192 bytes,
respectively.
When data is written to program memory using TBLWT
instructions, the data is not written directly to memory.
Instead, data written using table writes is stored in
holding latches until the programming sequence is
executed.
Any number of TBLWT instructions can be executed
and a write will be successfully performed. However,
64 TBLWT instructions are required to write the full row
of memory.
To ensure that no data is corrupted during a write, any
unused addresses should be programmed with
FFFFFFh. This is because the holding latches reset to
an unknown state, so if the addresses are left in the
Reset state, they may overwrite the locations on rows
which were not rewritten.
The basic sequence for RTSP programming is to set up
a Table Pointer, then do a series of TBLWT instructions
to load the buffers. Programming is performed by
setting the control bits in the NVMCON register.
Data can be loaded in any order and the holding registers can be written to multiple times before performing
a write operation. Subsequent writes, however, will
wipe out any previous writes.
Note:
Writing to a location multiple times without
erasing is not recommended.
All of the table write operations are single-word writes
(2 instruction cycles), because only the buffers are
written. A programming cycle is required for
programming each row.
5.3
5.4
Enhanced In-Circuit Serial
Programming
Enhanced In-Circuit Serial Programming uses an onboard bootloader, known as the program executive, to
manage the programming process. Using an SPI data
frame format, the program executive can erase,
program and verify program memory. See the device
programming specification for more information on
Enhanced ICSP
5.5
Control Registers
There are two SFRs used to read and write the
program Flash memory: NVMCON and NVMKEY.
The NVMCON register (Register 5-1) controls which
blocks are to be erased, which memory type is to be
programmed and the start of the programming cycle.
NVMKEY is a write-only register that is used for write
protection. To start a programming or erase sequence,
the user must consecutively write 55h and AAh to the
NVMKEY register. Refer to Section 5.6 “Programming
Operations” for further details.
5.6
Programming Operations
A complete programming sequence is necessary for
programming or erasing the internal Flash in RTSP
mode. During a programming or an erase operation,
the processor stalls (Waits) until the operation is
finished. Setting the WR bit (NVMCON<15>) starts the
operation and the WR bit is automatically cleared when
the operation is finished.
Configuration Word values are stored in the last two
locations of program memory. Performing a page erase
operation on the last page of program memory clears
these values and enables code protection. As a result,
avoid performing page erase operations on the last
page of program memory.
JTAG Operation
The PIC24F family supports JTAG programming and
boundary scan. Boundary scan can improve the manufacturing process by verifying pin to PCB connectivity.
Programming can be performed with industry standard
JTAG programmers supporting Serial Vector Format
(SVF).
DS39747F-page 52
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 5-1:
NVMCON: FLASH MEMORY CONTROL REGISTER
R/SO-0(1)
R/W-0(1)
R/W-0(1)
U-0
U-0
U-0
U-0
U-0
WR
WREN
WRERR
—
—
—
—
—
bit 15
bit 8
R/W-0(1)
U-0
—
U-0
ERASE
—
U-0
R/W-0(1)
R/W-0(1)
R/W-0(1)
R/W-0(1)
—
NVMOP3(2)
NVMOP2(2)
NVMOP1(2)
NVMOP0(2)
bit 7
bit 0
Legend:
SO = Settable Only bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
WR: Write Control bit
1 = Initiates a Flash memory program or erase operation. The operation is self-timed and the bit is
cleared by hardware once operation is complete.
0 = Program or erase operation is complete and inactive
bit 14
WREN: Write Enable bit
1 = Enables Flash program/erase operations
0 = Inhibits Flash program/erase operations
bit 13
WRERR: Write Sequence Error Flag bit
1 = An improper program or erase sequence attempt or termination has occurred (bit is set automatically
on any set attempt of the WR bit)
0 = The program or erase operation completed normally
bit 12-7
Unimplemented: Read as ‘0’
bit 6
ERASE: Erase/Program Enable bit
1 = Performs the erase operation specified by NVMOP<3:0> on the next WR command
0 = Performs the program operation specified by NVMOP<3:0> on the next WR command
bit 5-4
Unimplemented: Read as ‘0’
bit 3-0
NVMOP<3:0>: NVM Operation Select bits(2)
1111 = Memory bulk erase operation (ERASE = 1) or no operation (ERASE = 0)(3)
0011 = Memory word program operation (ERASE = 0) or no operation (ERASE = 1)
0010 = Memory page erase operation (ERASE = 1) or no operation (ERASE = 0)
0001 = Memory row program operation (ERASE = 0) or no operation (ERASE = 1)
Note 1:
2:
3:
These bits can only be reset on a POR.
All other combinations of NVMOP<3:0> are unimplemented.
Available in ICSP™ mode only. Refer to the device programming specifications.
 2005-2012 Microchip Technology Inc.
DS39747F-page 53
PIC24FJ128GA010 FAMILY
5.6.1
PROGRAMMING ALGORITHM FOR
FLASH PROGRAM MEMORY
4.
5.
The user can program one row of program Flash memory
at a time. To do this, it is necessary to erase the 8-row
erase block containing the desired row. The general
process is:
1.
2.
3.
Read eight rows of program memory
(512 instructions) and store in data RAM.
Update the program data in RAM with the
desired new data.
Erase the block (see Example 5-1):
a) Set the NVMOP bits (NVMCON<3:0>) to
‘0010’ to configure for block erase. Set the
ERASE (NVMCON<6>) and WREN
(NVMCON<14>) bits.
b) Write the starting address of the block to be
erased into the TBLPAG and W registers.
c) Write 55h to NVMKEY.
d) Write AAh to NVMKEY.
e) Set the WR bit (NVMCON<15>). The erase
cycle begins and the CPU stalls for the duration of the erase cycle. When the erase is
done, the WR bit is cleared automatically.
EXAMPLE 5-1:
DS39747F-page 54
For protection against accidental operations, the write
initiate sequence for NVMKEY must be used to allow
any erase or program operation to proceed. After the
programming command has been executed, the user
must wait for the programming time until programming
is complete. The two instructions following the start of
the programming sequence should be NOPs, as shown
in Example 5-3.
ERASING A PROGRAM MEMORY BLOCK
; Set up NVMCON for block erase operation
MOV
#0x4042, W0
MOV
W0, NVMCON
; Init pointer to row to be ERASED
MOV
#tblpage(PROG_ADDR), W0
MOV
W0, TBLPAG
MOV
#tbloffset(PROG_ADDR), W0
TBLWTL W0, [W0]
DISI
#5
MOV
MOV
MOV
MOV
BSET
NOP
NOP
6.
Write the first 64 instructions from data RAM into
the program memory buffers (see Example 5-2).
Write the program block to Flash memory:
a) Set the NVMOP bits to ‘0001’ to configure
for row programming. Clear the ERASE bit
and set the WREN bit.
b) Write 55h to NVMKEY.
c) Write AAh to NVMKEY.
d) Set the WR bit. The programming cycle
begins and the CPU stalls for the duration of
the write cycle. When the write to Flash
memory is done, the WR bit is cleared
automatically.
Repeat Steps 4 and 5, using the next available
64 instructions from the block in data RAM by
incrementing the value in TBLPAG, until all
512 instructions are written back to Flash
memory.
#0x55, W0
W0, NVMKEY
#0xAA, W1
W1, NVMKEY
NVMCON, #WR
;
; Initialize NVMCON
;
;
;
;
;
;
;
;
;
;
;
;
Initialize PM Page Boundary SFR
Initialize in-page EA[15:0] pointer
Set base address of erase block
Block all interrupts with priority <7
for next 5 instructions
Write the 55 key
Write the AA key
Start the erase sequence
Insert two NOPs after the erase
command is asserted
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
EXAMPLE 5-2:
LOADING THE WRITE BUFFERS
; Set up NVMCON for row programming operations
MOV
#0x4001, W0
;
MOV
W0, NVMCON
; Initialize NVMCON
; Set up a pointer to the first program memory location to be written
; program memory selected, and writes enabled
MOV
#0x0000, W0
;
MOV
W0, TBLPAG
; Initialize PM Page Boundary SFR
MOV
#0x6000, W0
; An example program memory address
; Perform the TBLWT instructions to write the latches
; 0th_program_word
MOV
#LOW_WORD_0, W2
;
MOV
#HIGH_BYTE_0, W3
;
TBLWTL W2, [W0]
; Write PM low word into program latch
TBLWTH W3, [W0++]
; Write PM high byte into program latch
; 1st_program_word
MOV
#LOW_WORD_1, W2
;
MOV
#HIGH_BYTE_1, W3
;
TBLWTL W2, [W0]
; Write PM low word into program latch
TBLWTH W3, [W0++]
; Write PM high byte into program latch
; 2nd_program_word
MOV
#LOW_WORD_2, W2
;
MOV
#HIGH_BYTE_2, W3
;
; Write PM low word into program latch
TBLWTL W2, [W0]
; Write PM high byte into program latch
TBLWTH W3, [W0++]
•
•
•
; 63rd_program_word
MOV
#LOW_WORD_31, W2
;
MOV
#HIGH_BYTE_31, W3
;
; Write PM low word into program latch
TBLWTL W2, [W0]
; Write PM high byte into program latch
TBLWTH W3, [W0]
EXAMPLE 5-3:
INITIATING A PROGRAMMING SEQUENCE
DISI
#5
MOV
MOV
MOV
MOV
BSET
BTSC
BRA
#0x55, W0
W0, NVMKEY
#0xAA, W1
W1, NVMKEY
NVMCON, #WR
NVMCON, #15
$-2
 2005-2012 Microchip Technology Inc.
; Block all interrupts with priority <7
; for next 5 instructions
;
;
;
;
;
;
Write the 55 key
Write the AA key
Start the program/erase sequence
and wait for it to be
completed
DS39747F-page 55
PIC24FJ128GA010 FAMILY
5.6.2
PROGRAMMING A SINGLE WORD
OF FLASH PROGRAM MEMORY
If a Flash location has been erased, it can be programmed using table write instructions to write an
instruction word (24-bit) into the write latch. The
TBLPAG register is loaded with the 8 Most Significant
Bytes of the Flash address. The TBLWTL and TBLWTH
EXAMPLE 5-4:
instructions write the desired data into the write latches
and specify the lower 16 bits of the program memory
address to write to. To configure the NVMCON register
for a word write, set the NVMOP bits (NVMCON<3:0>)
to ‘0011’. The write is performed by executing the
unlock sequence and setting the WR bit.
PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY
; Setup a pointer to data Program Memory
MOV
#tblpage(PROG_ADDR), W0
;
MOV
W0, TBLPAG
;Initialize PM Page Boundary SFR
MOV
#tbloffset(PROG_ADDR), W0
;Initialize a register with program memory address
MOV
MOV
TBLWTL
TBLWTH
#LOW_WORD_N, W2
#HIGH_BYTE_N, W3
W2, [W0]
W3, [W0++]
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
; Setup NVMCON for programming one word to data Program Memory
MOV
#0x4003, W0
;
MOV
W0, NVMCON
; Set NVMOP bits to 0011
DISI
#5
MOV
MOV
MOV
MOV
BSET
#0x55, W0
W0, NVMKEY
#0xAA, W0
W0, NVMKEY
NVMCON, #WR
DS39747F-page 56
; Disable interrupts while the KEY sequence is
written
; Write the key sequence
; Start the write cycle
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
6.0
Note:
RESETS
Note:
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference source. Refer to Section 7. “Reset”
(DS39712) in the “PIC24F Family
Reference Manual” for more information.
All types of device Reset will set a corresponding status
bit in the RCON register to indicate the type of Reset
(see Register 6-1). A POR will clear all bits except for
the BOR and POR bits (RCON<1:0>), which are set.
The user may set or clear any bit at any time during
code execution. The RCON bits only serve as status
bits. Setting a particular Reset status bit in software will
not cause a device Reset to occur.
The Reset module combines all Reset sources and
controls the device Master Reset Signal, SYSRST. The
following is a list of device Reset sources:
•
•
•
•
•
•
•
•
•
Refer to the specific peripheral or CPU
section of this manual for register Reset
states.
POR: Power-on Reset
MCLR: Pin Reset
SWR: RESET Instruction
WDT: Watchdog Timer Reset
BOR: Brown-out Reset
CM: Configuration Word Mismatch Reset
TRAPR: Trap Conflict Reset
IOPUWR: Illegal Opcode Reset
UWR: Uninitialized W Register Reset
The RCON register also has other bits associated with
the Watchdog Timer and device power-saving states.
The function of these bits is discussed in other sections
of this manual.
Note:
The status bits in the RCON register
should be cleared after they are read so
that the next RCON register value after a
device Reset will be meaningful.
A simplified block diagram of the Reset module is
shown in Figure 6-1.
Any active source of Reset will make the SYSRST signal active. Many registers associated with the CPU and
peripherals are forced to a known Reset state. Most
registers are unaffected by a Reset; their status is
unknown on POR and unchanged by all other Resets.
FIGURE 6-1:
RESET SYSTEM BLOCK DIAGRAM
RESET
Instruction
Glitch Filter
MCLR
WDT
Module
Sleep or Idle
VDD Rise
Detect
POR
SYSRST
VDD
Brown-out
Reset
BOR
Enable Voltage Regulator
Trap Conflict
Illegal Opcode
Uninitialized W Register
Configuration Word Mismatch Reset
 2005-2012 Microchip Technology Inc.
DS39747F-page 57
PIC24FJ128GA010 FAMILY
RCON: RESET CONTROL REGISTER(1)
REGISTER 6-1:
R/W-0
TRAPR
bit 15
R/W-0
IOPUWR
U-0
—
U-0
—
U-0
—
U-0
—
R/W-0
CM
R/W-0
VREGS
bit 8
R/W-0
EXTR
bit 7
R/W-0
SWR
R/W-0
SWDTEN(2)
R/W-0
WDTO
R/W-0
SLEEP
R/W-0
IDLE
R/W-1
BOR
R/W-1
POR
bit 0
Legend:
R = Readable bit
-n = Value at POR
bit 15
bit 14
bit 13-10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
Note 1:
2:
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
TRAPR: Trap Reset Flag bit
1 = A Trap Conflict Reset has occurred
0 = A Trap Conflict Reset has not occurred
IOPUWR: Illegal Opcode or Uninitialized W Access Reset Flag bit
1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an
Address Pointer caused a Reset
0 = An illegal opcode or uninitialized W Reset has not occurred
Unimplemented: Read as ‘0’
CM: Configuration Word Mismatch Reset Flag bit
1 = A Configuration Word Mismatch Reset has occurred
0 = A Configuration Word Mismatch Reset has not occurred
VREGS: Voltage Regulator Standby Enable bit
1 = Regulator remains active during Sleep
0 = Regulator goes to standby during Sleep
EXTR: External Reset (MCLR) Pin bit
1 = A Master Clear (pin) Reset has occurred
0 = A Master Clear (pin) Reset has not occurred
SWR: Software Reset (Instruction) Flag bit
1 = A RESET instruction has been executed
0 = A RESET instruction has not been executed
SWDTEN: Software Enable/Disable of WDT bit(2)
1 = WDT is enabled
0 = WDT is disabled
WDTO: Watchdog Timer Time-out Flag bit
1 = WDT time-out has occurred
0 = WDT time-out has not occurred
SLEEP: Wake From Sleep Flag bit
1 = Device has been in Sleep mode
0 = Device has not been in Sleep mode
IDLE: Wake-up From Idle Flag bit
1 = Device was in Idle mode
0 = Device was not in Idle mode
All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not
cause a device Reset.
If the FWDTEN Configuration bit is ‘1’ (unprogrammed), the WDT is always enabled, regardless of the
SWDTEN bit setting.
DS39747F-page 58
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
RCON: RESET CONTROL REGISTER(1) (CONTINUED)
REGISTER 6-1:
bit 1
BOR: Brown-out Reset Flag bit
1 = A Brown-out Reset has occurred (note that BOR is also set after a Power-on Reset)
0 = A Brown-out Reset has not occurred
POR: Power-on Reset Flag bit
1 = A Power-on Reset has occurred
0 = A Power-on Reset has not occurred
bit 0
Note 1:
2:
All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not
cause a device Reset.
If the FWDTEN Configuration bit is ‘1’ (unprogrammed), the WDT is always enabled, regardless of the
SWDTEN bit setting.
TABLE 6-1:
RESET FLAG BIT OPERATION
Flag Bit
Setting Event
Clearing Event
TRAPR (RCON<15>)
Trap conflict event
POR
IOPUWR (RCON<14>)
Illegal opcode or uninitialized W register access
POR
EXTR (RCON<7>)
MCLR Reset
POR
SWR (RCON<6>)
RESET instruction
POR
WDTO (RCON<4>)
WDT time-out
PWRSAV instruction, POR
SLEEP (RCON<3>)
PWRSAV #SLEEP instruction
POR
IDLE (RCON<2>)
PWRSAV #IDLE instruction
POR
BOR (RCON<1>)
POR, BOR
—
POR (RCON<0>)
POR
—
Note:
6.1
All Reset flag bits may be set or cleared by the user software.
Clock Source Selection at Reset
If clock switching is enabled, the system clock source at
device Reset is chosen as shown in Table 6-2. If clock
switching is disabled, the system clock source is always
selected according to the oscillator Configuration bits.
Refer to Section 8.0 “Oscillator Configuration” for
further details.
TABLE 6-2:
Reset Type
POR
BOR
MCLR
WDTR
OSCILLATOR SELECTION vs.
TYPE OF RESET (CLOCK
SWITCHING ENABLED)
Clock Source Determinant
Oscillator Configuration bits
(FNOSC<2:0>)
6.2
Device Reset Times
The Reset times for various types of device Reset are
summarized in Table 6-3. Note that the system Reset
signal, SYSRST, is released after the POR and PWRT
delay times expire.
The time that the device actually begins to execute
code will also depend on the system oscillator delays,
which include the Oscillator Start-up Timer (OST) and
the PLL lock time. The OST and PLL lock times occur
in parallel with the applicable SYSRST delay times.
The FSCM delay determines the time at which the
FSCM begins to monitor the system clock source after
the SYSRST signal is released.
COSC Control bits
(OSCCON<14:12>)
SWR
 2005-2012 Microchip Technology Inc.
DS39747F-page 59
PIC24FJ128GA010 FAMILY
TABLE 6-3:
Reset Type
RESET DELAY TIMES FOR VARIOUS DEVICE RESETS
Clock Source
SYSRST Delay
EC, FRC, FRCDIV, LPRC TPOR + TSTARTUP + TRST
POR
BOR
System Clock
Delay
FSCM
Delay
—
—
Notes
1, 2, 3
ECPLL, FRCPLL
TPOR + TSTARTUP + TRST
TLOCK
TFSCM
1, 2, 3, 5, 6
XT, HS, SOSC
TPOR + TSTARTUP + TRST
TOST
TFSCM
1, 2, 3, 4, 6
XTPLL, HSPLL
1, 2, 3, 4, 5, 6
TPOR + TSTARTUP + TRST
TOST + TLOCK
TFSCM
EC, FRC, FRCDIV, LPRC
TSTARTUP + TRST
—
—
2, 3
ECPLL, FRCPLL
TSTARTUP + TRST
TLOCK
TFSCM
2, 3, 5, 6
XT, HS, SOSC
TSTARTUP + TRST
TOST
TFSCM
2, 3, 4, 6
XTPLL, HSPLL
TSTARTUP + TRST
TOST + TLOCK
TFSCM
2, 3, 4, 5, 6
MCLR
Any Clock
TRST
—
—
3
WDT
Any Clock
TRST
—
—
3
Software
Any Clock
TRST
—
—
3
Illegal Opcode
Any Clock
TRST
—
—
3
Uninitialized W
Any Clock
TRST
—
—
3
Trap Conflict
Any Clock
TRST
—
—
3
Note 1:
2:
3:
4:
5:
6:
TPOR = Power-on Reset delay (10 s nominal).
TSTARTUP = TVREG (10 s nominal) if the on-chip regulator is enabled or TPWRT (64 ms nominal) if an
on-chip regulator is disabled.
TRST = Internal state Reset time (20 s nominal).
TOST = Oscillator Start-up Timer. A 10-bit counter counts 1024 oscillator periods before releasing the
oscillator clock to the system.
TLOCK = PLL lock time.
TFSCM = Fail-Safe Clock Monitor delay (100 s nominal).
DS39747F-page 60
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
6.2.1
POR AND LONG OSCILLATOR
START-UP TIMES
The oscillator start-up circuitry and its associated delay
timers are not linked to the device Reset delays that
occur at power-up. Some crystal circuits (especially
low-frequency crystals) will have a relatively long
start-up time. Therefore, one or more of the following
conditions is possible after SYSRST is released:
• The oscillator circuit has not begun to oscillate.
• The Oscillator Start-up Timer has NOT expired (if
a crystal oscillator is used).
• The PLL has not achieved a lock (if PLL is used).
The device will not begin to execute code until a valid
clock source has been released to the system. Therefore, the oscillator and PLL start-up delays must be
considered when the Reset delay time must be known.
6.2.2
FAIL-SAFE CLOCK MONITOR
(FSCM) AND DEVICE RESETS
If the FSCM is enabled, it will begin to monitor the system clock source when SYSRST is released. If a valid
clock source is not available at this time, the device will
automatically switch to the FRC oscillator and the user
can switch to the desired crystal oscillator in the Trap
Service Routine.
 2005-2012 Microchip Technology Inc.
6.2.2.1
FSCM Delay for Crystal and PLL
Clock Sources
When the system clock source is provided by a crystal
oscillator and/or the PLL, a small delay, TFSCM, will
automatically be inserted after the POR and PWRT
delay times. The FSCM will not begin to monitor the
system clock source until this delay expires. The FSCM
delay time is nominally 100 s and provides additional
time for the oscillator and/or PLL to stabilize. In most
cases, the FSCM delay will prevent an oscillator failure
trap at a device Reset when the PWRT is disabled.
6.3
Special Function Register Reset
States
Most of the Special Function Registers (SFRs) associated with the PIC24F CPU and peripherals are reset to a
particular value at a device Reset. The SFRs are
grouped by their peripheral or CPU function and their
Reset values are specified in each section of this manual.
The Reset value for each SFR does not depend on the
type of Reset, with the exception of four registers. The
Reset value for the Reset Control register, RCON, will
depend on the type of device Reset. The Reset value for
the Oscillator Control register, OSCCON, will depend on
the type of Reset and the programmed values of the
oscillator Configuration bits in the FOSC Device Configuration register (see Table 6-2). The RCFGCAL and
NVMCON registers are only affected by a POR.
DS39747F-page 61
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 62
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
7.0
Note:
INTERRUPT CONTROLLER
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 8. “Interrupts”
(DS39707) in the “PIC24F Family
Reference Manual” for more information.
The PIC24F interrupt controller reduces the numerous
peripheral interrupt request signals to a single interrupt
request signal to the PIC24F CPU. It has the following
features:
•
•
•
•
Up to 8 processor exceptions and software traps
7 user-selectable priority levels
Interrupt Vector Table (IVT) with up to 118 vectors
A unique vector for each interrupt or exception
source
• Fixed priority within a specified user priority level
• Alternate Interrupt Vector Table (AIVT) for debug
support
• Fixed interrupt entry and return latencies
7.1
Interrupt Vector Table
The Interrupt Vector Table (IVT) is shown in Figure 7-1.
The IVT resides in program memory, starting at location,
000004h. The IVT contains 126 vectors, consisting of
8 non-maskable trap vectors, plus up to 118 sources of
interrupt. In general, each interrupt source has its own
vector. Each interrupt vector contains a 24-bit wide
address. The value programmed into each interrupt vector location is the starting address of the associated
Interrupt Service Routine (ISR).
7.1.1
ALTERNATE INTERRUPT VECTOR
TABLE
The Alternate Interrupt Vector Table (AIVT) is located
after the IVT, as shown in Figure 7-1. Access to the
AIVT is provided by the ALTIVT control bit
(INTCON2<15>). If the ALTIVT bit is set, all interrupt
and exception processes will use the alternate vectors
instead of the default vectors. The alternate vectors are
organized in the same manner as the default vectors.
The AIVT supports emulation and debugging efforts by
providing a means to switch between an application
and a support environment without requiring the interrupt vectors to be reprogrammed. This feature also
enables switching between applications for evaluation
of different software algorithms at run time. If the AIVT
is not needed, the AIVT should be programmed with
the same addresses used in the IVT.
7.2
Reset Sequence
A device Reset is not a true exception because the
interrupt controller is not involved in the Reset process.
The PIC24F device clears its registers in response to a
Reset which forces the PC to zero. The microcontroller
then begins program execution at location, 000000h.
The user programs a GOTO instruction at the Reset
address, which redirects program execution to the
appropriate start-up routine.
Note:
Any unimplemented or unused vector
locations in the IVT and AIVT should be
programmed with the address of a default
interrupt handler routine that contains a
RESET instruction.
Interrupt vectors are prioritized in terms of their natural
priority; this is linked to their position in the vector table.
All other things being equal, lower addresses have a
higher natural priority. For example, the interrupt associated with Vector 0 will take priority over interrupts at
any other vector address.
PIC24FJ128GA010 family devices implement nonmaskable traps and unique interrupts. These are
summarized in Table 7-1 and Table 7-2.
 2005-2012 Microchip Technology Inc.
DS39747F-page 63
PIC24FJ128GA010 FAMILY
FIGURE 7-1:
PIC24F INTERRUPT VECTOR TABLE
Decreasing Natural Order Priority
Reset – GOTO Instruction
Reset – GOTO Address
Reserved
Oscillator Fail Trap Vector
Address Error Trap Vector
Stack Error Trap Vector
Math Error Trap Vector
Reserved
Reserved
Reserved
Interrupt Vector 0
Interrupt Vector 1
—
—
—
Interrupt Vector 52
Interrupt Vector 53
Interrupt Vector 54
—
—
—
Interrupt Vector 116
Interrupt Vector 117
Reserved
Reserved
Reserved
Oscillator Fail Trap Vector
Address Error Trap Vector
Stack Error Trap Vector
Math Error Trap Vector
Reserved
Reserved
Reserved
Interrupt Vector 0
Interrupt Vector 1
—
—
—
Interrupt Vector 52
Interrupt Vector 53
Interrupt Vector 54
—
—
—
Interrupt Vector 116
Interrupt Vector 117
Start of Code
Note 1:
TABLE 7-1:
000000h
000002h
000004h
000014h
00007Ch
00007Eh
000080h
0000FCh
0000FEh
000100h
000102h
000114h
Alternate Interrupt Vector Table (AIVT)(1)
00017Ch
00017Eh
000180h
0001FEh
000200h
See Table 7-2 for the interrupt vector list.
TRAP VECTOR DETAILS
Vector Number
IVT Address
AIVT Address
0
1
2
3
4
5
6
7
000004h
000006h
000008h
00000Ah
00000Ch
00000Eh
000010h
000012h
000104h
000106h
000108h
00010Ah
00010Ch
00010Eh
000110h
000112h
DS39747F-page 64
Interrupt Vector Table (IVT)(1)
Trap Source
Reserved
Oscillator Failure
Address Error
Stack Error
Math Error
Reserved
Reserved
Reserved
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 7-2:
IMPLEMENTED INTERRUPT VECTORS
Interrupt Source
ADC1 Conversion Done
Vector
Number
IVT Address
13
00002Eh
Interrupt Bit Locations
AIVT
Address
Flag
Enable
Priority
00012Eh
IFS0<13>
IEC0<13>
IPC3<6:4>
Comparator Event
18
000038h
000138h
IFS1<2>
IEC1<2>
IPC4<10:8>
CRC Generator
67
00009Ah
00019Ah
IFS4<3>
IEC4<3>
IPC16<14:12>
External Interrupt 0
0
000014h
000114h
IFS0<0>
IEC0<0>
IPC0<2:0>
External Interrupt 1
20
00003Ch
00013Ch
IFS1<4>
IEC1<4>
IPC5<2:0>
External Interrupt 2
29
00004Eh
00014Eh
IFS1<13>
IEC1<13>
IPC7<6:4>
External Interrupt 3
53
00007Eh
00017Eh
IFS3<5>
IEC3<5>
IPC13<6:4>
External Interrupt 4
54
000080h
000180h
IFS3<6>
IEC3<6>
IPC13<10:8>
I2C1 Master Event
17
000036h
000136h
IFS1<1>
IEC1<1>
IPC4<6:4>
I2C1 Slave Event
16
000034h
000134h
IFS1<0>
IEC1<0>
IPC4<2:0>
I2C2 Master Event
50
000078h
000178h
IFS3<2>
IEC3<2>
IPC12<10:8>
I2C2 Slave Event
49
000076h
000176h
IFS3<1>
IEC3<1>
IPC12<6:4>
Input Capture 1
1
000016h
000116h
IFS0<1>
IEC0<1>
IPC0<6:4>
Input Capture 2
5
00001Eh
00011Eh
IFS0<5>
IEC0<5>
IPC1<6:4>
Input Capture 3
37
00005Eh
00015Eh
IFS2<5>
IEC2<5>
IPC9<6:4>
Input Capture 4
38
000060h
000160h
IFS2<6>
IEC2<6>
IPC9<10:8>
Input Capture 5
39
000062h
000162h
IFS2<7>
IEC2<7>
IPC9<14:12>
Input Change Notification
19
00003Ah
00013Ah
IFS1<3>
IEC1<3>
IPC4<14:12>
Output Compare 1
2
000018h
000118h
IFS0<2>
IEC0<2>
IPC0<10:8>
Output Compare 2
6
000020h
000120h
IFS0<6>
IEC0<6>
IPC1<10:8>
Output Compare 3
25
000046h
000146h
IFS1<9>
IEC1<9>
IPC6<6:4>
Output Compare 4
26
000048h
000148h
IFS1<10>
IEC1<10>
IPC6<10:8>
Output Compare 5
41
000066h
000166h
IFS2<9>
IEC2<9>
IPC10<6:4>
Parallel Master Port
45
00006Eh
00016Eh
IFS2<13>
IEC2<13>
IPC11<6:4>
Real-Time Clock/Calendar
62
000090h
000190h
IFS3<14>
IEC3<14>
IPC15<10:8>
SPI1 Error
9
000026h
000126h
IFS0<9>
IEC0<9>
IPC2<6:4>
SPI1 Event
10
000028h
000128h
IFS0<10>
IEC0<10>
IPC2<10:8>
SPI2 Error
32
000054h
000154h
IFS2<0>
IEC0<0>
IPC8<2:0>
SPI2 Event
33
000056h
000156h
IFS2<1>
IEC2<1>
IPC8<6:4>
Timer1
3
00001Ah
00011Ah
IFS0<3>
IEC0<3>
IPC0<14:12>
Timer2
7
000022h
000122h
IFS0<7>
IEC0<7>
IPC1<14:12>
Timer3
8
000024h
000124h
IFS0<8>
IEC0<8>
IPC2<2:0>
Timer4
27
00004Ah
00014Ah
IFS1<11>
IEC1<11>
IPC6<14:12>
Timer5
28
00004Ch
00014Ch
IFS1<12>
IEC1<12>
IPC7<2:0>
UART1 Error
65
000096h
000196h
IFS4<1>
IEC4<1>
IPC16<6:4>
UART1 Receiver
11
00002Ah
00012Ah
IFS0<11>
IEC0<11>
IPC2<14:12>
UART1 Transmitter
12
00002Ch
00012Ch
IFS0<12>
IEC0<12>
IPC3<2:0>
IPC16<10:8>
UART2 Error
66
000098h
000198h
IFS4<2>
IEC4<2>
UART2 Receiver
30
000050h
000150h
IFS1<14>
IEC1<14>
IPC7<10:8>
UART2 Transmitter
31
000052h
000152h
IFS1<15>
IEC1<15>
IPC7<14:12>
 2005-2012 Microchip Technology Inc.
DS39747F-page 65
PIC24FJ128GA010 FAMILY
7.3
Interrupt Control and Status
Registers
The PIC24FJ128GA010 family devices implement a
total of 29 registers for the interrupt controller:
•
•
•
•
•
•
INTCON1
INTCON2
IFS0 through IFS4
IEC0 through IEC4
IPC0 through IPC14, and IPC16
INTTREG
Global interrupt control functions are controlled from
INTCON1 and INTCON2. INTCON1 contains the Interrupt Nesting Disable (NSTDIS) bit, as well as the
control and status flags for the processor trap sources.
The INTCON2 register controls the external interrupt
request signal behavior and the use of the Alternate
Interrupt Vector Table.
The IFS registers maintain all of the interrupt request
flags. Each source of interrupt has a status bit which is
set by the respective peripherals, or external signal,
and is cleared via software.
The IEC registers maintain all of the interrupt enable
bits. These control bits are used to individually enable
interrupts from the peripherals or external signals.
The IPC registers are used to set the Interrupt Priority
Level for each source of interrupt. Each user interrupt
source can be assigned to one of eight priority levels.
DS39747F-page 66
The interrupt sources are assigned to the IFSx, IECx
and IPCx registers in the same sequence that they are
listed in Table 7-2. For example, the INT0 (External
Interrupt 0) is shown as having a vector number and a
natural order priority of 0. Thus, the INT0IF status bit is
found in IFS0<0>, the enable bit in IEC0<0> and the
priority bits in the first position of IPC0 (IPC0<2:0>).
Although they are not specifically part of the interrupt
control hardware, two of the CPU control registers contain bits that control interrupt functionality. The CPU
STATUS register (SR) contains the IPL<2:0> bits
(SR<7:5>). These indicate the current CPU Interrupt
Priority Level. The user may change the current CPU
priority level by writing to the IPL bits.
The CORCON register contains the IPL3 bit, which
together with IPL<2:0>, also indicates the current CPU
priority level. IPL3 is a read-only bit so that trap events
cannot be masked by the user software.
The interrupt controller has the Interrupt Controller Test
Register (INTTREG) that displays the status of the
interrupt controller. When an interrupt request occurs,
its associated vector number and the new interrupt priority level are latched into INTTREG. This information
can be used to determine a specific interrupt source if
a generic ISR is used for multiple vectors, such as
when ISR remapping is used in bootloader applications. It also could be used to check if another interrupt
is pending while in an ISR.
All Interrupt registers are described in Register 7-1
through Register 7-30, in the following pages.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-1:
SR: CPU STATUS REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0
—
—
—
—
—
—
—
DC(1)
bit 15
bit 8
R/W-0(1)
R/W-0(1)
R/W-0(1)
R-0
R/W-0
R/W-0
R/W-0
R/W-0
(2,3)
(2,3)
IPL0(2,3)
RA(1)
N(1)
OV(1)
Z(1)
C(1)
IPL2
IPL1
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
IPL<2:0>: CPU Interrupt Priority Level Status bits(2,3)
111 = CPU Interrupt Priority Level is 7 (15); user interrupts are disabled
110 = CPU Interrupt Priority Level is 6 (14)
101 = CPU Interrupt Priority Level is 5 (13)
100 = CPU Interrupt Priority Level is 4 (12)
011 = CPU Interrupt Priority Level is 3 (11)
010 = CPU Interrupt Priority Level is 2 (10)
001 = CPU Interrupt Priority Level is 1 (9)
000 = CPU Interrupt Priority Level is 0 (8)
bit 7-5
Note 1:
2:
3:
See Register 3-1 for the description of the remaining bit(s) that are not dedicated to interrupt control functions.
The IPL bits are concatenated with the IPL3 bit (CORCON<3>) to form the CPU Interrupt Priority Level. The
value in parentheses indicates the Interrupt Priority Level if IPL3 = 1.
The IPL Status bits are read-only when NSTDIS (INTCON1<15>) = 1.
REGISTER 7-2:
CORCON: CORE CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
—
U-0
—
—
U-0
R/C-0
R/W-0
U-0
U-0
—
IPL3(2)
PSV(1)
—
—
bit 7
bit 0
Legend:
C = Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 3
Note 1:
2:
x = Bit is unknown
IPL3: CPU Interrupt Priority Level Status bit(2)
1 = CPU Interrupt Priority Level is greater than 7
0 = CPU Interrupt Priority Level is 7 or less
See Register 3-2 for the description of the remaining bit(s) that are not dedicated to interrupt control functions.
The IPL3 bit is concatenated with the IPL<2:0> bits (SR<7:5>) to form the CPU Interrupt Priority Level.
 2005-2012 Microchip Technology Inc.
DS39747F-page 67
PIC24FJ128GA010 FAMILY
REGISTER 7-3:
INTCON1: INTERRUPT CONTROL REGISTER 1
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
NSTDIS
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
MATHERR
ADDRERR
STKERR
OSCFAIL
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
NSTDIS: Interrupt Nesting Disable bit
1 = Interrupt nesting is disabled
0 = Interrupt nesting is enabled
bit 14-5
Unimplemented: Read as ‘0’
bit 4
MATHERR: Arithmetic Error Trap Status bit
1 = Overflow trap has occurred
0 = Overflow trap has not occurred
bit 3
ADDRERR: Address Error Trap Status bit
1 = Address error trap has occurred
0 = Address error trap has not occurred
bit 2
STKERR: Stack Error Trap Status bit
1 = Stack error trap has occurred
0 = Stack error trap has not occurred
bit 1
OSCFAIL: Oscillator Failure Trap Status bit
1 = Oscillator failure trap has occurred
0 = Oscillator failure trap has not occurred
bit 0
Unimplemented: Read as ‘0’
DS39747F-page 68
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-4:
INTCON2: INTERRUPT CONTROL REGISTER 2
R/W-0
R-0
U-0
U-0
U-0
U-0
U-0
U-0
ALTIVT
DISI
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
INT4EP
INT3EP
INT2EP
INT1EP
INT0EP
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
ALTIVT: Enable Alternate Interrupt Vector Table bit
1 = Use alternate vector table
0 = Use standard (default) vector table
bit 14
DISI: DISI Instruction Status bit
1 = DISI instruction is active
0 = DISI is not active
bit 13-5
Unimplemented: Read as ‘0’
bit 4
INT4EP: External Interrupt 4 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 3
INT3EP: External Interrupt 3 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 2
INT2EP: External Interrupt 2 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 1
INT1EP: External Interrupt 1 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 0
INT0EP: External Interrupt 0 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 69
PIC24FJ128GA010 FAMILY
REGISTER 7-5:
U-0
—
bit 15
R/W-0
T2IF
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
IFS0: INTERRUPT FLAG STATUS REGISTER 0
U-0
—
R/W-0
AD1IF
R/W-0
U1TXIF
R/W-0
U1RXIF
R/W-0
SPI1IF
R/W-0
SPF1IF
R/W-0
T3IF
bit 8
R/W-0
OC2IF
R/W-0
IC2IF
U-0
—
R/W-0
T1IF
R/W-0
OC1IF
R/W-0
IC1IF
R/W-0
INT0IF
bit 0
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Unimplemented: Read as ‘0’
AD1IF: A/D Conversion Complete Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
U1TXIF: UART1 Transmitter Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
U1RXIF: UART1 Receiver Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
SPI1IF: SPI1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
SPF1IF: SPI1 Fault Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
T3IF: Timer3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
T2IF: Timer2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
OC2IF: Output Compare Channel 2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
IC2IF: Input Capture Channel 2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
Unimplemented: Read as ‘0’
T1IF: Timer1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
OC1IF: Output Compare Channel 1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
IC1IF: Input Capture Channel 1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
INT0IF: External Interrupt 0 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
DS39747F-page 70
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-6:
IFS1: INTERRUPT FLAG STATUS REGISTER 1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U2TXIF
U2RXIF
INT2IF
T5IF
T4IF
OC4IF
OC3IF
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
INT1IF
CNIF
CMIF
MI2C1IF
SI2C1IF
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
U2TXIF: UART2 Transmitter Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 14
U2RXIF: UART2 Receiver Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 13
INT2IF: External Interrupt 2 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 12
T5IF: Timer5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 11
T4IF: Timer4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 10
OC4IF: Output Compare Channel 4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 9
OC3IF: Output Compare Channel 3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 8-5
Unimplemented: Read as ‘0’
bit 4
INT1IF: External Interrupt 1 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 3
CNIF: Input Change Notification Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 2
CMIF: Comparator Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
MI2C1IF: Master I2C1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
SI2C1IF: Slave I2C1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 71
PIC24FJ128GA010 FAMILY
REGISTER 7-7:
IFS2: INTERRUPT FLAG STATUS REGISTER 2
U-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
U-0
—
—
PMPIF
—
—
—
OC5IF
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
IC5IF
IC4IF
IC3IF
—
—
—
SPI2IF
SPF2IF
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
PMPIF: Parallel Master Port Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 12-10
Unimplemented: Read as ‘0’
bit 9
OC5IF: Output Compare Channel 5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 8
Unimplemented: Read as ‘0’
bit 7
IC5IF: Input Capture Channel 5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 6
IC4IF: Input Capture Channel 4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 5
IC3IF: Input Capture Channel 3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 4-2
Unimplemented: Read as ‘0’
bit 1
SPI2IF: SPI2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
SPF2IF: SPI2 Fault Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
DS39747F-page 72
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-8:
IFS3: INTERRUPT FLAG STATUS REGISTER 3
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
PMPIF
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
R/W-0
U-0
U-0
R/W-0
R/W-0
U-0
—
INT4IF
INT3IF
—
—
MI2C2IF
SI2C2IF
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14
RTCIF: Real-Time Clock/Calendar Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 13-7
Unimplemented: Read as ‘0’
bit 6
INT4IF: External Interrupt 4 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 5
INT3IF: External Interrupt 3 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 4-3
Unimplemented: Read as ‘0’
bit 2
MI2C2IF: Master I2C2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
SI2C2IF: Slave I2C2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 73
PIC24FJ128GA010 FAMILY
REGISTER 7-9:
IFS4: INTERRUPT FLAG STATUS REGISTER 4
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
—
CRCIF
U2ERIF
U1ERIF
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-4
Unimplemented: Read as ‘0’
bit 3
CRCIF: CRC Generator Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 2
U2ERIF: UART2 Error Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
U1ERIF: UART1 Error Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
Unimplemented: Read as ‘0’
DS39747F-page 74
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-10:
U-0
—
bit 15
R/W-0
T2IE
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
IEC0: INTERRUPT ENABLE CONTROL REGISTER 0
U-0
—
R/W-0
AD1IE
R/W-0
U1TXIE
R/W-0
U1RXIE
R/W-0
SPI1IE
R/W-0
SPF1IE
R/W-0
T3IE
bit 8
R/W-0
OC2IE
R/W-0
IC2IE
U-0
—
R/W-0
T1IE
R/W-0
OC1IE
R/W-0
IC1IE
R/W-0
INT0IE
bit 0
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Unimplemented: Read as ‘0’
AD1IE: A/D Conversion Complete Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
U1TXIE: UART1 Transmitter Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
U1RXIE: UART1 Receiver Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
SPI1IE: SPI1 Transfer Complete Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
SPF1IE: SPI1 Fault Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T3IE: Timer3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T2IE: Timer2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC2IE: Output Compare Channel 2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
IC2IE: Input Capture Channel 2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
Unimplemented: Read as ‘0’
T1IE: Timer1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC1IE: Output Compare Channel 1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
IC1IE: Input Capture Channel 1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
INT0IE: External Interrupt 0 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
 2005-2012 Microchip Technology Inc.
DS39747F-page 75
PIC24FJ128GA010 FAMILY
REGISTER 7-11:
IEC1: INTERRUPT ENABLE CONTROL REGISTER 1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U2TXIE
U2RXIE
INT2IE
T5IE
T4IE
OC4IE
OC3IE
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
INT1IE
CNIE
CMIE
MI2C1IE
SI2C1IE
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
U2TXIE: UART2 Transmitter Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 14
U2RXIE: UART2 Receiver Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 13
INT2IE: External Interrupt 2 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 12
T5IE: Timer5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 11
T4IE: Timer4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 10
OC4IE: Output Compare Channel 4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 9
OC3IE: Output Compare Channel 3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 8-5
Unimplemented: Read as ‘0’
bit 4
INT1IE: External Interrupt 1 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 3
CNIE: Input Change Notification Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 2
CMIE: Comparator Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 1
MI2C1IE: Master I2C1 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
SI2C1IE: Slave I2C1 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
DS39747F-page 76
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-12:
IEC2: INTERRUPT ENABLE CONTROL REGISTER 2
U-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
U-0
—
—
PMPIE
—
—
—
OC5IE
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
IC5IE
IC4IE
IC3IE
—
—
—
SPI2IE
SPF2IE
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
PMPIE: Parallel Master Port Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 12-10
Unimplemented: Read as ‘0’
bit 9
OC5IE: Output Compare Channel 5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 8
Unimplemented: Read as ‘0’
bit 7
IC5IE: Input Capture Channel 5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 6
IC4IE: Input Capture Channel 4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 5
IC3IE: Input Capture Channel 3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 4-2
Unimplemented: Read as ‘0’
bit 1
SPI2IE: SPI2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
SPF2IE: SPI2 Fault Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 77
PIC24FJ128GA010 FAMILY
REGISTER 7-13:
IEC3: INTERRUPT ENABLE CONTROL REGISTER 3
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
RTCIE
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
R/W-0
U-0
U-0
R/W-0
R/W-0
U-0
—
INT4IE
INT3IE
—
—
MI2C2IE
SI2C2IE
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14
RTCIE: Real-Time Clock/Calendar Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 13-7
Unimplemented: Read as ‘0’
bit 6
INT4IE: External Interrupt 4 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 5
INT3IE: External Interrupt 3 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 4-3
Unimplemented: Read as ‘0’
bit 2
MI2C2IE: Master I2C2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 1
SI2C2IE: Slave I2C2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
Unimplemented: Read as ‘0’
DS39747F-page 78
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-14:
IEC4: INTERRUPT ENABLE CONTROL REGISTER 4
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
—
CRCIE
U2ERIE
U1ERIE
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-4
Unimplemented: Read as ‘0’
bit 3
CRCIE: CRC Generator Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 2
U2ERIE: UART2 Error Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 1
U1ERIE: UART1 Error Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 79
PIC24FJ128GA010 FAMILY
REGISTER 7-15:
IPC0: INTERRUPT PRIORITY CONTROL REGISTER 0
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T1IP2
T1IP1
T1IP0
—
OC1IP2
OC1IP1
OC1IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
IC1IP2
IC1IP1
IC1IP0
—
INT0IP2
INT0IP1
INT0IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T1IP<2:0>: Timer1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC1IP<2:0>: Output Compare Channel 1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC1IP<2:0>: Input Capture Channel 1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
INT0IP<2:0:> External Interrupt 0 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is priority 1
000 = Interrupt source is disabled
DS39747F-page 80
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-16:
IPC1: INTERRUPT PRIORITY CONTROL REGISTER 1
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T2IP2
T2IP1
T2IP0
—
OC2IP2
OC2IP1
OC2IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
IC2IP2
IC2IP1
IC2IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T2IP<2:0>: Timer2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC2IP<2:0>: Output Compare Channel 2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC2IP<2:0>: Input Capture Channel 2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 81
PIC24FJ128GA010 FAMILY
REGISTER 7-17:
IPC2: INTERRUPT PRIORITY CONTROL REGISTER 2
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
U1RXIP2
U1RXIP1
U1RXIP0
—
SPI1IP2
SPI1IP1
SPI1IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
SPF1IP2
SPF1IP1
SPF1IP0
—
T3IP2
T3IP1
T3IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
U1RXIP<2:0>: UART1 Receiver Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
SPI1IP<2:0>: SPI1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SPF1IP<2:0>: SPI1 Fault Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
T3IP<2:0>: Timer3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39747F-page 82
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-18:
IPC3: INTERRUPT PRIORITY CONTROL REGISTER 3
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
AD1IP2
AD1IP1
AD1IP0
—
U1TXIP2
U1TXIP1
U1TXIP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
AD1IP<2:0>: A/D Conversion Complete Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
U1TXIP<2:0>: UART1 Transmitter Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 83
PIC24FJ128GA010 FAMILY
REGISTER 7-19:
IPC4: INTERRUPT PRIORITY CONTROL REGISTER 4
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
CNIP2
CNIP1
CNIP0
—
CMIP2
CMIP1
CMIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
MI2C1IP2
MI2C1IP1
MI2C1IP0
—
SI2C1IP2
SI2C1IP1
SI2C1IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
CNIP<2:0>: Input Change Notification Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
CMIP<2:0>: Comparator Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
MI2C1IP<2:0>: Master I2C1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
SI2C1IP<2:0>: Slave I2C1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39747F-page 84
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-20:
IPC5: INTERRUPT PRIORITY CONTROL REGISTER 5
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
INT1IP2
INT1IP1
INT1IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-3
Unimplemented: Read as ‘0’
bit 2-0
INT1IP<2:0>: External Interrupt 1 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 85
PIC24FJ128GA010 FAMILY
REGISTER 7-21:
IPC6: INTERRUPT PRIORITY CONTROL REGISTER 6
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T4IP2
T4IP1
T4IP0
—
OC4IP2
OC4IP1
OC4IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
OC3IP2
OC3IP1
OC3IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T4IP<2:0>: Timer4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC4IP<2:0>: Output Compare Channel 4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
OC3IP<2:0>: Output Compare Channel 3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39747F-page 86
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-22:
IPC7: INTERRUPT PRIORITY CONTROL REGISTER 7
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
U2TXIP2
U2TXIP1
U2TXIP0
—
U2RXIP2
U2RXIP1
U2RXIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
INT2IP2
INT2IP1
INT2IP0
—
T5IP2
T5IP1
T5IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
U2TXIP<2:0>: UART2 Transmitter Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
U2RXIP<2:0>: UART2 Receiver Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
INT2IP<2:0>: External Interrupt 2 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
T5IP<2:0>: Timer5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 87
PIC24FJ128GA010 FAMILY
REGISTER 7-23:
IPC8: INTERRUPT PRIORITY CONTROL REGISTER 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
SPI2IP2
SPI2IP1
SPI2IP0
—
SPF2IP2
SPF2IP1
SPF2IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
SPI2IP<2:0>: SPI2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
SPF2IP<2:0>: SPI2 Fault Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39747F-page 88
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-24:
IPC9: INTERRUPT PRIORITY CONTROL REGISTER 9
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
IC5IP2
IC5IP1
IC5IP0
—
IC4IP2
IC4IP1
IC4IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
IC3IP2
IC3IP1
IC3IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
IC5IP<2:0>: Input Capture Channel 5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
IC4IP<2:0>: Input Capture Channel 4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC3IP<2:0>: Input Capture Channel 3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 89
PIC24FJ128GA010 FAMILY
REGISTER 7-25:
IPC10: INTERRUPT PRIORITY CONTROL REGISTER 10
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
OC5IP2
OC5IP1
OC5IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
OC5IP<2:0>: Output Compare Channel 5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
REGISTER 7-26:
IPC11: INTERRUPT PRIORITY CONTROL REGISTER 11
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
PMPIP2
PMPIP1
PMPIP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
PMPIP<2:0>: Parallel Master Port Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39747F-page 90
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-27:
IPC12: INTERRUPT PRIORITY CONTROL REGISTER 12
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
MI2C2IP2
MI2C2IP1
MI2C2IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
SI2C2IP2
SI2C2IP1
SI2C2IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
MI2C2IP<2:0>: Master I2C2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SI2C2IP<2:0>: Slave I2C2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 91
PIC24FJ128GA010 FAMILY
REGISTER 7-28:
IPC13: INTERRUPT PRIORITY CONTROL REGISTER 13
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
INT4IP2
IN4IP1
INT4IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
INT3IP2
INT3IP1
INT3IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
INT4IP<2:0>: External Interrupt 4 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
INT3IP<2:0>: External Interrupt 3 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39747F-page 92
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-29:
IPC15: INTERRUPT PRIORITY CONTROL REGISTER 15
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
RTCIP2
RTCIP1
RTCIP0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
RTCIP<2:0>: Real-Time Clock/Calendar Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7-0
Unimplemented: Read as ‘0’
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 93
PIC24FJ128GA010 FAMILY
REGISTER 7-30:
IPC16: INTERRUPT PRIORITY CONTROL REGISTER 16
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
CRCIP2
CRCIP1
CRCIP0
—
U2ERIP2
U2ERIP1
U2ERIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
U1ERIP2
U1ERIP1
U1ERIP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
CRCIP2:0>: CRC Generator Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
U2ERIP<2:0>: UART2 Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
U1ERIP<2:0>: UART1 Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39747F-page 94
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 7-31:
INTTREG: INTERRUPT CONTROL AND STATUS REGISTER
R-0
U-0
R/W-0
U-0
R-0
R-0
R-0
R-0
CPUIRQ
—
VHOLD
—
ILR3
ILR2
ILR1
ILR0
bit 15
bit 8
U-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
—
VECNUM6
VECNUM5
VECNUM4
VECNUM3
VECNUM2
VECNUM1
VECNUM0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
x = Bit is unknown
CPUIRQ: Interrupt Request from Interrupt Controller CPU bit
1 = An interrupt request has occurred but has not yet been Acknowledged by the CPU; this happens
when the CPU priority is higher than the interrupt priority
0 = No interrupt request is unacknowledged
bit 14
Unimplemented: Read as ‘0’
bit 13
VHOLD: Vector Number Capture Configuration bit
1 = The VECNUM bits contain the value of the highest priority pending interrupt
0 = The VECNUM bits contain the value of the last Acknowledged interrupt (i.e., the last interrupt that
has occurred with higher priority than the CPU, even if other interrupts are pending)
bit 12
Unimplemented: Read as ‘0’
bit 11-8
ILR<3:0>: New CPU Interrupt Priority Level bits
1111 = CPU Interrupt Priority Level is 15
•
•
•
0001 = CPU Interrupt Priority Level is 1
0000 = CPU Interrupt Priority Level is 0
bit 7
Unimplemented: Read as ‘0’
bit 6-0
VECNUM<6:0>: Pending Interrupt Vector ID bits (pending vector number is VECNUM + 8)
0111111 = Interrupt Vector pending is number 135
•
•
•
0000001 = Interrupt Vector pending is number 9
0000000 = Interrupt Vector pending is number 8
 2005-2012 Microchip Technology Inc.
DS39747F-page 95
PIC24FJ128GA010 FAMILY
7.4
Interrupt Setup Procedures
7.4.1
INITIALIZATION
To configure an interrupt source:
1.
2.
Set the NSTDIS Control bit (INTCON1<15>) if
nested interrupts are not desired.
Select the user-assigned priority level for the
interrupt source by writing the control bits in the
appropriate IPCx Control register. The priority
level will depend on the specific application and
type of interrupt source. If multiple priority levels
are not desired, the IPCx register control bits for
all enabled interrupt sources may be
programmed to the same non-zero value.
Note:
3.
4.
At a device Reset, the IPC registers are
initialized, such that all user interrupt
sources are assigned to Priority Level 4.
Clear the interrupt flag status bit associated with
the peripheral in the associated IFSx Status
register.
Enable the interrupt source by setting the interrupt enable control bit associated with the
source in the appropriate IECx Control register.
7.4.2
7.4.3
TRAP SERVICE ROUTINE
A Trap Service Routine (TSR) is coded like an ISR,
except that the appropriate trap status flag in the
INTCON1 register must be cleared to avoid re-entry
into the TSR.
7.4.4
INTERRUPT DISABLE
All user interrupts can be disabled using the following
procedure:
1.
2.
Push the current SR value onto the software
stack using the PUSH instruction.
Force the CPU to Priority Level 7 by inclusive
ORing the value OEh with SRL.
To enable user interrupts, the POP instruction may be
used to restore the previous SR value.
Note that only user interrupts with a priority level of 7 or
less can be disabled. Trap sources (Level 8-15) cannot
be disabled.
The DISI instruction provides a convenient way to disable interrupts of Priority Levels 1-6 for a fixed period of
time. Level 7 interrupt sources are not disabled by the
DISI instruction.
INTERRUPT SERVICE ROUTINE
The method that is used to declare an ISR and initialize
the IVT with the correct vector address will depend on
the programming language (i.e., ‘C’ or assembler) and
the language development toolsuite that is used to
develop the application. In general, the user must clear
the interrupt flag in the appropriate IFSx register for the
source of interrupt that the ISR handles. Otherwise, the
ISR will be re-entered immediately after exiting the
routine. If the ISR is coded in assembly language, it
must be terminated using a RETFIE instruction to
unstack the saved PC value, SRL value and old CPU
priority level.
DS39747F-page 96
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
8.0
• On-chip 4x PLL to boost internal operating frequency
on select internal and external oscillator sources
• Software-controllable switching between various
clock sources
• Software-controllable postscaler for selective
clocking of CPU for system power savings
• A Fail-Safe Clock Monitor (FSCM) that detects
clock failure and permits safe application recovery
or shutdown
OSCILLATOR
CONFIGURATION
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 6. “Oscillator”
(DS39700) in the “PIC24F Family
Reference Manual” for more information.
A simplified diagram of the oscillator system is shown
in Figure 8-1.
The oscillator system for PIC24FJ128GA010 family
devices has the following features:
• A total of four external and internal oscillator options
as clock sources, providing 11 different clock modes
PIC24FJ128GA010 FAMILY CLOCK DIAGRAM
PIC24FJ128GA010 Family
Primary Oscillator
XT, HS, EC
OSC1
OSC2
FRC
Oscillator
8 MHz
(Nominal)
4 x PLL
Postscaler
8 MHz/
4 MHz
CLKDIV<14:12>
XTPLL, HSPLL,
ECPLL, FRCPLL
CPU
FRCDIV
CLKDIV<10:8>
LPRC
Oscillator
CLKO
Postscaler
FIGURE 8-1:
Peripherals
FRC
LPRC
31 kHz (Nominal)
Secondary Oscillator
SOSC
SOSCO
SOSCI
SOSCEN
Enable
Oscillator
Clock Control Logic
Fail-Safe
Clock
Monitor
WDT, PWRT
Clock Source Option
for Other Modules
 2005-2012 Microchip Technology Inc.
DS39747F-page 97
PIC24FJ128GA010 FAMILY
8.1
CPU Clocking Scheme
8.2
The system clock source can be provided by one of
four sources:
• Primary Oscillator (POSC) on the OSC1 and
OSC2 pins
• Secondary Oscillator (SOSC) on the SOSCI and
SOSCO pins
• Fast Internal RC (FRC) Oscillator
• Low-Power Internal RC (LPRC) Oscillator
The primary oscillator and FRC sources have the
option of using the internal 4x PLL. The frequency of
the FRC clock source can optionally be reduced by the
programmable clock divider. The selected clock source
generates the processor and peripheral clock sources.
The processor clock source is divided by two to produce the internal instruction cycle clock, FCY. In this
document, the instruction cycle clock is also denoted
by FOSC/2. The internal instruction cycle clock, FOSC/2,
can be provided on the OSC2 I/O pin for some
operating modes of the primary oscillator.
Oscillator Configuration
The oscillator source (and operating mode) that is
used at a device Power-on Reset event is selected
using Configuration bit settings. The oscillator Configuration bit settings are located in the Configuration
registers in the program memory (refer to
Section 24.1 “Configuration Bits” for further
details). The Primary Oscillator Configuration bits,
POSCMD<1:0> (Configuration Word 2<1:0>), and
the Initial Oscillator Select Configuration bits,
FNOSC<2:0> (Configuration Word 2<10:8>), select
the oscillator source that is used at a Power-on Reset.
The FRC primary oscillator with postscaler (FRCDIV)
is the default (unprogrammed) selection. The secondary oscillator, or one of the internal oscillators, may be
chosen by programming these bit locations.
The Configuration bits allow users to choose between
the various clock modes, shown in Table 8-1.
8.2.1
CLOCK SWITCHING MODE
CONFIGURATION BITS
The FCKSM Configuration bits (Configuration Word 2<7:6>)
are used to jointly configure device clock switching and
the Fail-Safe Clock Monitor (FSCM). Clock switching is
enabled only when FCKSM1 is programmed (‘0’). The
FSCM is enabled only when FCKSM<1:0> are both
programmed (‘00’).
TABLE 8-1:
CONFIGURATION BIT VALUES FOR CLOCK SELECTION
Oscillator Mode
Oscillator Source
POSCMD<1:0>
FNOSC<2:0>
Fast RC Oscillator with Postscaler
(FRCDIV)
Internal
11
111
1, 2
(Reserved)
Internal
xx
110
1
Low-Power RC Oscillator (LPRC)
Internal
11
101
1
Secondary
11
100
1
Primary Oscillator (HS) with PLL
Module (HSPLL)
Primary
10
011
Primary Oscillator (XT) with PLL
Module (XTPLL)
Primary
01
011
Primary Oscillator (EC) with PLL
Module (ECPLL)
Primary
00
011
Primary Oscillator (HS)
Primary
10
010
Primary Oscillator (XT)
Primary
01
010
Primary Oscillator (EC)
Primary
00
010
Fast RC Oscillator with PLL Module
(FRCPLL)
Internal
11
001
1
Fast RC Oscillator (FRC)
Internal
11
000
1
Secondary (Timer1) Oscillator
(SOSC)
Note 1:
2:
Note
OSC2 pin function is determined by the OSCIOFNC Configuration bit.
This is the default oscillator mode for an unprogrammed (erased) device.
DS39747F-page 98
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
8.3
Control Registers
The operation of the oscillator is controlled by three
Special Function Registers:
• OSCCON
• CLKDIV
• OSCTUN
The OSCCON register (Register 8-1) is the main control register for the oscillator. It controls clock source
switching, and allows the monitoring of clock sources.
REGISTER 8-1:
The Clock Divider register (Register 8-2) controls the
features associated with Doze mode, as well as the
postscaler for the FRC oscillator.
The FRC Oscillator Tune register (Register 8-3) allows
the user to fine-tune the FRC oscillator over a range of
approximately ±12%. Each increment may adjust the
FRC frequency by varying amounts and may not be
monotonic. The next closest frequency may be multiple
steps apart.
OSCCON: OSCILLATOR CONTROL REGISTER
U-0
R-0
R-0
R-0
U-0
R/W-x(1)
R/W-x(1)
R/W-x(1)
—
COSC2
COSC1
COSC0
—
NOSC2
NOSC1
NOSC0
bit 15
bit 8
R/SO-0
U-0
R-0(2)
U-0
R/CO-0
U-0
R/W-0
R/W-0
CLKLOCK
—
LOCK
—
CF
—
SOSCEN
OSWEN
bit 7
bit 0
Legend:
CO = Clearable Only bit
SO = Settable Only bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
Unimplemented: Read as ‘0’
bit 14-12
COSC<2:0>: Current Oscillator Selection bits
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
bit 11
Unimplemented: Read as ‘0’
bit 10-8
NOSC<2:0>: New Oscillator Selection bits(1)
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
bit 7
CLKLOCK: Clock Selection Lock Enable bit
If FSCM is enabled (FCKSM1 = 1):
1 = Clock and PLL selections are locked
0 = Clock and PLL selections are not locked and may be modified by setting the OSWEN bit
If FSCM is disabled (FCKSM1 = 0):
Clock and PLL selections are never locked and may be modified by setting the OSWEN bit.
bit 6
Unimplemented: Read as ‘0’
Note 1:
2:
Reset values for these bits are determined by the FNOSC Configuration bits.
Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.
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REGISTER 8-1:
OSCCON: OSCILLATOR CONTROL REGISTER (CONTINUED)
bit 5
LOCK: PLL Lock Status bit(2)
1 = PLL module is in lock or PLL module start-up timer is satisfied
0 = PLL module is out of lock, PLL start-up timer is running or PLL is disabled
bit 4
Unimplemented: Read as ‘0’
bit 3
CF: Clock Fail Detect bit
1 = FSCM has detected a clock failure
0 = No clock failure has been detected
bit 2
Unimplemented: Read as ‘0’
bit 1
SOSCEN: 32 kHz Secondary Oscillator (SOSC) Enable bit
1 = Enable secondary oscillator
0 = Disable secondary oscillator
bit 0
OSWEN: Oscillator Switch Enable bit
1 = Initiate an oscillator switch to clock source specified by NOSC<2:0> bits
0 = Oscillator switch is complete
Note 1:
2:
Reset values for these bits are determined by the FNOSC Configuration bits.
Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.
DS39747F-page 100
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REGISTER 8-2:
CLKDIV: CLOCK DIVIDER REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-1
ROI
DOZE2
DOZE1
DOZE0
DOZEN(1)
RCDIV2
RCDIV1
RCDIV0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ROI: Recover on Interrupt bit
1 = Interrupts clear the DOZEN bit and reset the CPU peripheral clock ratio to 1:1
0 = Interrupts have no effect on the DOZEN bit
bit 14-12
DOZE<2:0>: CPU Peripheral Clock Ratio Select bits
111 = 1:128
110 = 1:64
101 = 1:32
100 = 1:16
011 = 1:8
010 = 1:4
001 = 1:2
000 = 1:1
bit 11
DOZEN: DOZE Enable bit(1)
1 = DOZE<2:0> bits specify the CPU peripheral clock ratio
0 = CPU peripheral clock ratio set to 1:1
bit 10-8
RCDIV<2:0>: FRC Postscaler Select bits
111 = 31.25 kHz (divide-by-256)
110 = 125 kHz (divide-by-64)
101 = 250 kHz (divide-by-32)
100 = 500 kHz (divide-by-16)
011 = 1 MHz (divide-by-8)
010 = 2 MHz (divide-by-4)
001 = 4 MHz (divide-by-2)
000 = 8 MHz (divide-by-1)
bit 7-0
Unimplemented: Read as ‘0’
Note 1:
This bit is automatically cleared when the ROI bit is set and an interrupt occurs.
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REGISTER 8-3:
OSCTUN: FRC OSCILLATOR TUNE REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
TUN5
TUN4
TUN3
TUN2
TUN1
TUN0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-6
Unimplemented: Read as ‘0’
bit 5-0
TUN<5:0>: FRC Oscillator Tuning bits
011111 = Maximum frequency deviation
011110 =
x = Bit is unknown



000001 =
000000 = Center frequency, oscillator is running at factory calibrated frequency
111111 =



100001 =
100000 = Minimum frequency deviation
DS39747F-page 102
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8.4
Clock Switching Operation
With few limitations, applications are free to switch
between any of the four clock sources (POSC, SOSC,
FRC and LPRC) under software control and at any
time. To limit the possible side effects that could result
from this flexibility, PIC24F devices have a safeguard
lock built into the switching process.
Note:
8.4.1
Primary oscillator mode has three
different submodes (XT, HS and EC)
which are determined by the POSCMD
Configuration bits. While an application
can switch to and from primary oscillator
mode in software, it cannot switch
between the different primary submodes
without reprogramming the device.
ENABLING CLOCK SWITCHING
To enable clock switching, the FCKSM1 Configuration bit
in the Flash Configuration Word 2 register must be programmed to ‘0’. (Refer to Section 24.1 “Configuration
Bits” for further details.) If the FCKSM1 Configuration bit
is unprogrammed (‘1’), the clock switching function and
Fail-Safe Clock Monitor function are disabled. This is the
default setting.
The NOSC control bits (OSCCON<10:8>) do not
control the clock selection when clock switching is disabled. However, the COSC bits (OSCCON<14:12>)
will reflect the clock source selected by the FNOSC
Configuration bits.
The OSWEN control bit (OSCCON<0>) has no effect
when clock switching is disabled; it is held at ‘0’ at all
times.
8.4.2
OSCILLATOR SWITCHING
SEQUENCE
At a minimum, performing a clock switch requires this
basic sequence:
1.
2.
3.
4.
5.
Once the basic sequence is completed, the system
clock hardware responds automatically as follows:
1.
2.
3.
4.
5.
6.
The clock switching hardware compares the
COSC status bits with the new value of the
NOSC control bits. If they are the same, then the
clock switch is a redundant operation. In this
case, the OSWEN bit is cleared automatically
and the clock switch is aborted.
If a valid clock switch has been initiated, the
LOCK (OSCCON<5>) and CF (OSCCON<3>)
status bits are cleared.
The new oscillator is turned on by the hardware
if it is not currently running. If a crystal oscillator
must be turned on, the hardware will wait until
the OST expires. If the new source is using the
PLL, then the hardware waits until a PLL lock is
detected (LOCK = 1).
The hardware waits for ten clock cycles from the
new clock source and then performs the clock
switch.
The hardware clears the OSWEN bit to indicate a
successful clock transition. In addition, the NOSC
bit values are transferred to the COSC status bits.
The old clock source is turned off at this time
with the exception of LPRC (if WDT or FSCM is
enabled) or SOSC (if SOSCEN remains set).
Note 1: The processor will continue to execute
code throughout the clock switching
sequence. Timing-sensitive code should
not be executed during this time.
2: Direct clock switches between any
primary oscillator mode with PLL and
FRCPLL mode are not permitted. This
applies to clock switches in either direction. In these instances, the application
must switch to FRC mode as a transition
clock source between the two PLL
modes.
If
desired,
read
the
COSC
bits
(OSCCON<14:12>) to determine the current
oscillator source.
Perform the unlock sequence to allow a write to
the OSCCON register high byte.
Write the appropriate value to the NOSC control
bits (OSCCON<10:8>) for the new oscillator
source.
Perform the unlock sequence to allow a write to
the OSCCON register low byte.
Set the OSWEN bit to initiate the oscillator
switch.
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A recommended code sequence for a clock switch
includes the following:
1.
2.
3.
4.
5.
6.
7.
8.
Disable interrupts during the OSCCON register
unlock and write sequence.
Execute the unlock sequence for the OSCCON
high byte by writing 78h and 9Ah to
OSCCON<15:8>
in
two
back-to-back
instructions.
Write new oscillator source to the NOSC control
bits in the instruction immediately following the
unlock sequence.
Execute the unlock sequence for the OSCCON
low byte by writing 46h and 57h to
OSCCON<7:0> in two back-to-back instructions.
Set the OSWEN bit in the instruction immediately
following the unlock sequence.
Continue to execute code that is not
clock-sensitive (optional).
Invoke an appropriate amount of software delay
(cycle counting) to allow the selected oscillator
and/or PLL to start and stabilize.
Check to see if OSWEN is ‘0’. If it is, the switch
was successful. If OSWEN is still set, then
check the LOCK bit to determine the cause of
the failure.
The core sequence for unlocking the OSCCON register
and initiating a clock switch is shown in Example 8-1.
DS39747F-page 104
EXAMPLE 8-1:
BASIC CODE SEQUENCE
FOR CLOCK SWITCHING
.global __reset
.include "p24fxxxx.inc"
.text
__reset:
;Place the new oscillator selection in W0
;OSCCONH (high byte) Unlock Sequence
DISI #18
PUSH
w1
PUSH
w2
PUSH
w3
MOV
#OSCCONH, w1
MOV
#0x78, w2
MOV
#0x9A, w3
MOV.b
w2, [w1]
MOV.b
w3, [w1]
;Set new oscillator selection
MOV.b
WREG, OSCCONH
;OSCCONL (low byte) unlock sequence
MOV
#OSCCONL, w1
MOV
#0x46, w2
MOV
#0x57, w3
MOV.b
w2, [w1]
MOV.b
w3, [w1]
;Start oscillator switch operation
BSET OSCCON, #0
POP
w3
POP
w2
POP
w1
.end
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9.0
Note:
POWER-SAVING FEATURES
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 10. PowerSaving Features” (DS39698) in the
“PIC24F Family Reference Manual” for
more information.
The PIC24FJ128GA010 family of devices provides the
ability to manage power consumption by selectively
managing clocking to the CPU and the peripherals. In
general, a lower clock frequency and a reduction in the
number of circuits being clocked constitutes lower
consumed power. All PIC24F devices manage power
consumption in four different ways:
•
•
•
•
Clock Frequency
Instruction-Based Sleep and Idle modes
Software-Controlled Doze mode
Selective Peripheral Control in Software
Combinations of these methods can be used to selectively tailor an application’s power consumption, while
still maintaining critical application features, such as
timing-sensitive communications.
9.1
Clock Frequency and Clock
Switching
PIC24F devices allow for a wide range of clock
frequencies to be selected under application control. If
the system clock configuration is not locked, users can
choose low-power or high-precision oscillators by simply
changing the NOSC bits. The process of changing a system clock during operation, as well as limitations to the
process, are discussed in more detail in Section 8.0
“Oscillator Configuration”.
9.2
Instruction-Based Power-Saving
Modes
PIC24F devices have two special power-saving modes
that are entered through the execution of a special
PWRSAV instruction. Sleep mode stops clock operation
and halts all code execution; Idle mode halts the CPU
EXAMPLE 9-1:
PWRSAV#SLEEP_MODE
PWRSAV#IDLE_MODE
and code execution, but allows peripheral modules to
continue operation. The assembly syntax of the
PWRSAV instruction is shown in Example 9-1.
Sleep and Idle modes can be exited as a result of an
enabled interrupt, WDT time-out or a device Reset.
When the device exits these modes, it is said to
“wake-up”.
Note:
9.2.1
SLEEP_MODE and IDLE_MODE are constants defined in the assembler include
file for the selected device.
SLEEP MODE
Sleep mode has these features:
• The system clock source is shut down. If an
on-chip oscillator is used, it is turned off.
• The device current consumption will be reduced
to a minimum provided that no I/O pin is sourcing
current.
• The Fail-Safe Clock Monitor does not operate
during Sleep mode since the system clock source
is disabled.
• The LPRC clock will continue to run in Sleep
mode if the WDT is enabled.
• The WDT, if enabled, is automatically cleared
prior to entering Sleep mode.
• Some device features or peripherals may
continue to operate in Sleep mode. This includes
items, such as the input change notification on the
I/O ports, or peripherals that use an external clock
input. Any peripheral that requires the system
clock source for its operation will be disabled in
Sleep mode.
The device will wake-up from Sleep mode on any of
these events:
• On any interrupt source that is individually
enabled
• On any form of device Reset
• On a WDT time-out
On wake-up from Sleep, the processor will restart with
the same clock source that was active when Sleep
mode was entered.
PWRSAV INSTRUCTION SYNTAX
; Put the device into SLEEP mode
; Put the device into IDLE mode
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9.2.2
IDLE MODE
Idle mode has these features:
• The CPU will stop executing instructions.
• The WDT is automatically cleared.
• The system clock source remains active. By
default, all peripheral modules continue to operate
normally from the system clock source, but can
also be selectively disabled (see Section 9.4
“Selective Peripheral Module Control”).
• If the WDT or FSCM is enabled, the LPRC will
also remain active.
The device will wake from Idle mode on any of these
events:
• Any interrupt that is individually enabled.
• Any device Reset.
• A WDT time-out.
On wake-up from Idle, the clock is re-applied to the
CPU and instruction execution begins immediately,
starting with the instruction following the PWRSAV
instruction or the first instruction in the ISR.
9.2.3
INTERRUPTS COINCIDENT WITH
POWER SAVE INSTRUCTIONS
Any interrupt that coincides with the execution of a
PWRSAV instruction will be held off until entry into Sleep
or Idle mode has completed. The device will then
wake-up from Sleep or Idle mode.
9.3
Doze Mode
Generally, changing clock speed and invoking one of
the power-saving modes are the preferred strategies
for reducing power consumption. There may be circumstances, however, where this is not practical. For
example, it may be necessary for an application to
maintain uninterrupted synchronous communication,
even while it is doing nothing else. Reducing system
clock speed may introduce communication errors,
while using a power-saving mode may stop
communications completely.
Doze mode is a simple and effective alternative method
to reduce power consumption while the device is still
executing code. In this mode, the system clock continues to operate from the same source and at the same
speed. Peripheral modules continue to be clocked at the
same speed, while the CPU clock speed is reduced.
Synchronization between the two clock domains is
maintained, allowing the peripherals to access the SFRs
while the CPU executes code at a slower rate.
Doze mode is enabled by setting the DOZEN bit
(CLKDIV<11>). The ratio between peripheral and core
clock speed is determined by the DOZE<2:0> bits
(CLKDIV<14:12>). There are eight possible
configurations, from 1:1 to 1:128, with 1:1 being the
default.
DS39747F-page 106
It is also possible to use Doze mode to selectively
reduce power consumption in event driven applications. This allows clock-sensitive functions, such as
synchronous communications, to continue without
interruption while the CPU idles, waiting for something
to invoke an interrupt routine. Enabling the automatic
return to full-speed CPU operation on interrupts is
enabled by setting the ROI bit (CLKDIV<15>). By
default, interrupt events have no effect on Doze mode
operation.
9.4
Selective Peripheral Module
Control
Idle and Doze modes allow users to substantially
reduce power consumption by slowing or stopping the
CPU clock. Even so, peripheral modules still remain
clocked, and thus, consume power. There may be
cases where the application needs what these modes
do not provide: the allocation of power resources to
CPU processing with minimal power consumption from
the peripherals.
PIC24F devices address this requirement by allowing
peripheral modules to be selectively disabled, reducing
or eliminating their power consumption. This can be
done with two control bits:
• The Peripheral Enable bit, generically named
“XXXEN”, located in the module’s main control
SFR.
• The Peripheral Module Disable (PMD) bit, generically named “XXXMD”, located in one of the PMD
Control registers.
Both bits have similar functions in enabling or disabling its
associated module. Setting the PMD bit for a module disables all clock sources to that module, reducing its power
consumption to an absolute minimum. In this state, the
control and status registers associated with the peripheral will also be disabled, so writes to those registers will
have no effect and read values will be invalid. Many
peripheral modules have a corresponding PMD bit.
In contrast, disabling a module by clearing its XXXEN
bit disables its functionality, but leaves its registers
available to be read and written to. Power consumption
is reduced, but not by as much as the PMD bit does.
Most peripheral modules have an enable bit;
exceptions include Capture, Compare and RTCC.
To achieve more selective power savings, peripheral
modules can also be selectively disabled when the
device enters Idle mode. This is done through the
control bit of the generic name format, “XXXIDL”. By
default, all modules that can operate during Idle mode
will do so. Using the disable on Idle feature allows
further reduction of power consumption during Idle
mode, enhancing power savings for extremely critical
power applications.
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10.0
Note:
I/O PORTS
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference source. Refer to Section 12. “I/O
Ports with Peripheral Pin Select (PPS)”
(DS39711) in the “PIC24F Family
Reference Manual” for more information.
All of the device pins (except VDD, VSS, MCLR and
OSC1/CLKI) are shared between the peripherals and
the parallel I/O ports. All I/O input ports feature Schmitt
Trigger inputs for improved noise immunity.
10.1
Parallel I/O (PIO) Ports
A parallel I/O port that shares a pin with a peripheral is,
in general, subservient to the peripheral. The peripheral’s output buffer data and control signals are
provided to a pair of multiplexers. The multiplexers
select whether the peripheral or the associated port
has ownership of the output data and control signals of
the I/O pin. The logic also prevents “loop through”, in
which a port’s digital output can drive the input of a
peripheral that shares the same pin. Figure 10-1 shows
how ports are shared with other peripherals and the
associated I/O pin to which they are connected.
FIGURE 10-1:
When a peripheral is enabled and the peripheral is
actively driving an associated pin, the use of the pin as
a general purpose output pin is disabled. The I/O pin
may be read, but the output driver for the parallel port
bit will be disabled. If a peripheral is enabled, but the
peripheral is not actively driving a pin, that pin may be
driven by a port.
All port pins have three registers directly associated
with their operation as digital I/O. The Data Direction
register (TRISx) determines whether the pin is an input
or an output. If the data direction bit is a ‘1’, then the pin
is an input. All port pins are defined as inputs after a
Reset. Reads from the latch (LATx), read the latch.
Writes to the latch, write the latch. Reads from the port
(PORTx), read the port pins, while writes to the port
pins, write the latch.
Any bit and its associated data and control registers
that are not valid for a particular device will be
disabled. That means the corresponding LATx and
TRISx registers, and the port pin will read as zeros.
When a pin is shared with another peripheral or function that is defined as an input only, it is nevertheless,
regarded as a dedicated port because there is no
other competing source of outputs. An example is the
INT4 pin.
BLOCK DIAGRAM OF A TYPICAL SHARED PORT STRUCTURE
Peripheral Module
Output Multiplexers
Peripheral Input Data
Peripheral Module Enable
Peripheral Output Enable
Peripheral Output Data
Output Data
0
Read TRIS
WR TRIS
Output Enable
0
1
PIO Module
Data Bus
I/O
1
D
Q
I/O Pin
CK
TRIS Latch
D
WR LAT +
WR PORT
Q
CK
Data Latch
Read LAT
Input Data
Read PORT
 2005-2012 Microchip Technology Inc.
DS39747F-page 107
PIC24FJ128GA010 FAMILY
10.1.1
OPEN-DRAIN CONFIGURATION
In addition to the PORT, LAT and TRIS registers for
data control, each port pin can also be individually configured for either digital or open-drain output. This is
controlled by the Open-Drain Control register, ODCx,
associated with each port. Setting any of the bits configures the corresponding pin to act as an open-drain
output.
The open-drain feature allows the generation of
outputs higher than VDD (e.g., 5V) on any desired
digital only pins by using external pull-up resistors. The
maximum open-drain voltage allowed is the same as
the maximum VIH specification.
10.2
10.2.2
The voltage tolerance of pins used as device inputs is
dependent on the pin’s input function. Pins that are
used as digital only inputs are able to handle DC voltages up to 5.5V, a level typical for digital logic circuits.
In contrast, pins that also have analog input functions
of any kind can only tolerate voltages up to VDD. On
these pins, voltage excursions beyond VDD are always
to be avoided. Table 10-1 summarizes the input capabilities. Refer to Section 27.1 “DC Characteristics”
for more details.
Note:
Configuring Analog Port Pins
The use of the AD1PCFG and TRIS registers control
the operation of the A/D port pins. The port pins that are
desired as analog inputs must have their corresponding TRIS bit set (input). If the TRIS bit is cleared
(output), the digital output level (VOH or VOL) will be
converted.
When reading the PORT register, all pins configured as
analog input channels will read as cleared (a low level).
ANALOG INPUT PINS AND
VOLTAGE CONSIDERATIONS
For easy identification, the pin diagrams at
the beginning of this data sheet also indicate 5.5V tolerant pins with dark grey
shading.
TABLE 10-1:
Port or Pin
PORTA<10:9>
PORTC<15:12>
10.2.1
PORTE<9:0>
One instruction cycle is required between a port
direction change or port write operation and a read
operation of the same port. Typically this instruction
would be a NOP.
Tolerated
Input
PORTA<15:14>
PORTA<7:0>
PORTC<4:1>
PORTD<15:0>
Description
VDD
Only VDD input
levels are tolerated.
5.5V
Tolerates input
levels above VDD,
useful for most
standard logic.
PORTB<15:0>
Pins configured as digital inputs will not convert an
analog input. Analog levels on any pin that is defined as
a digital input (including the ANx pins) may cause the
input buffer to consume current that exceeds the
device specifications.
I/O PORT WRITE/READ TIMING
INPUT VOLTAGE LEVELS(1)
PORTF<13:12>
PORTF<8:0>
PORTG<15:12>
PORTG<9:6>
PORTG<3:0>
Note 1:
EXAMPLE 10-1:
MOV
MOV
NOP
btss
0xFF00, W0
W0, TRISBB
PORTB, #13
DS39747F-page 108
Not all port pins shown here are implemented on 64-pin and 80-pin devices.
Refer to Section 1.0 “Device Overview”
to confirm which ports are available in
specific devices.
PORT WRITE/READ EXAMPLE
;
;
;
;
Configure PORTB<15:8> as inputs
and PORTB<7:0> as outputs
Delay 1 cycle
Next Instruction
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10.3
Input Change Notification
The input change notification function of the I/O ports
allows the PIC24FJ128GA010 family of devices to generate interrupt requests to the processor in response to
a Change-of-State (COS) on selected input pins. This
feature is capable of detecting input Change-of-States,
even in Sleep mode, when the clocks are disabled.
Depending on the device pin count, there are up to
22 external signals (CN0 through CN21) that may be
selected (enabled) for generating an interrupt request
on a Change-of-State.
There are four control registers associated with the CN
module. The CNEN1 and CNEN2 registers contain the
interrupt enable control bits for each of the CN input
pins. Setting any of these bits enables a CN interrupt
for the corresponding pins.
 2005-2012 Microchip Technology Inc.
Each CN pin also has a weak pull-up connected to it.
The pull-ups act as a current source that is connected
to the pin and eliminate the need for external resistors
when push button or keypad devices are connected.
The pull-ups are enabled separately using the CNPU1
and CNPU2 registers, which contain the control bits for
each of the CN pins. Setting any of the control bits
enables the weak pull-ups for the corresponding pins.
When the internal pull-up is selected, the pin pulls up to
VDD – 0.7V (typical). Make sure that there is no external
pull-up source when the internal pull-ups are enabled, as
the voltage difference can cause a current path.
Note:
Pull-ups on Change Notification (CN) pins
should always be disabled whenever the
port pin is configured as a digital output.
DS39747F-page 109
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 110
 2005-2012 Microchip Technology Inc.
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11.0
Note:
Figure 11-1 presents a block diagram of the 16-bit timer
module.
TIMER1
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 14. “Timers”
(DS39704) in the “PIC24F Family
Reference Manual” for more information.
To configure Timer1 for operation:
1.
2.
3.
The Timer1 module is a 16-bit timer which can serve as
the time counter for the Real-Time Clock (RTC) or
operate as a free-running, interval timer/counter.
Timer1 can operate in three modes:
4.
5.
• 16-Bit Timer
• 16-Bit Synchronous Counter
• 16-Bit Asynchronous Counter
6.
Set the TON bit (= 1).
Select the timer prescaler ratio using the
TCKPS<1:0> bits.
Set the Clock and Gating modes using the TCS
and TGATE bits.
Set or clear the TSYNC bit to configure
synchronous or asynchronous operation.
Load the timer period value into the PR1
register.
If interrupts are required, set the Timer1 Interrupt Enable bit, T1IE. Use the priority bits,
T1IP<2:0>, to set the interrupt priority.
Timer1 also supports these features:
• Timer gate operation
• Selectable prescaler settings
• Timer operation during CPU Idle and Sleep
modes
• Interrupt on 16-bit Period register match or falling
edge of the external gate signal
FIGURE 11-1:
16-BIT TIMER1 MODULE BLOCK DIAGRAM
TCKPS<1:0>
TON
SOSCO/
T1CK
2
1x
SOSCEN
SOSCI
Gate
Sync
01
TCY
00
Prescaler
1, 8, 64, 256
TGATE
TCS
TGATE
1
Q
D
0
Q
CK
Set T1IF
0
Reset
TMR1
1
Equal
Comparator
Sync
TSYNC
PR1
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REGISTER 11-1:
T1CON: TIMER1 CONTROL REGISTER
R/W-0
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
TON
—
TSIDL
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
R/W-0
R/W-0
U-0
R/W-0
R/W-0
U-0
—
TGATE
TCKPS1
TCKPS0
—
TSYNC
TCS
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
TON: Timer1 On bit
1 = Starts 16-bit Timer1
0 = Stops 16-bit Timer1
bit 14
Unimplemented: Read as ‘0’
bit 13
TSIDL: Stop in Idle Mode bit
1 = Discontinues module operation when device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-7
Unimplemented: Read as ‘0’
bit 6
TGATE: Timer1 Gated Time Accumulation Enable bit
When TCS = 1:
This bit is ignored.
When TCS = 0:
1 = Gated time accumulation is enabled
0 = Gated time accumulation is disabled
bit 5-4
TCKPS<1:0>: Timer1 Input Clock Prescale Select bits
11 = 1:256
10 = 1:64
01 = 1:8
00 = 1:1
bit 3
Unimplemented: Read as ‘0’
bit 2
TSYNC: Timer1 External Clock Input Synchronization Select bit
When TCS = 1:
1 = Synchronizes external clock input
0 = Does not synchronize external clock input
When TCS = 0:
This bit is ignored.
bit 1
TCS: Timer1 Clock Source Select bit
1 = External clock from pin, T1CK (on the rising edge)
0 = Internal clock (FOSC/2)
bit 0
Unimplemented: Read as ‘0’
DS39747F-page 112
 2005-2012 Microchip Technology Inc.
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12.0
Note:
TIMER2/3 AND TIMER4/5
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 14. “Timers”
(DS39704) in the “PIC24F Family
Reference Manual” for more information.
The Timer2/3 and Timer4/5 modules are 32-bit timers,
which can also be configured as four independent, 16-bit
timers with selectable operating modes.
To configure Timer2/3 or Timer4/5 for 32-bit operation:
1.
2.
3.
4.
5.
As a 32-bit timer, Timer2/3 and Timer4/5 operate in
three modes:
• Two Independent 16-Bit Timers (Timer2 and
Timer3) with All 16-Bit Operating modes
• Single 32-Bit Timer
• Single 32-Bit Synchronous Counter
They also support these features:
•
•
•
•
•
Timer Gate Operation
Selectable Prescaler Settings
Timer Operation During Idle and Sleep modes
Interrupt on a 32-Bit Period Register Match
A/D Event Trigger (Timer2/3 only)
Individually, all four of the 16-bit timers can function as
synchronous timers or counters. They also offer the
features listed above, except for the A/D Event Trigger;
this is implemented only with Timer3. The operating
modes and enabled features are determined by setting
the appropriate bit(s) in the T2CON, T3CON, T4CON
and T5CON registers. T2CON and T4CON are shown
in generic form in Register 12-1; T3CON and T5CON
are shown in Register 12-2.
For 32-bit timer/counter operation, Timer2 and Timer4
are the least significant word; Timer3 and Timer4 are
the most significant word of the 32-bit timers.
Note:
6.
Set the T32 bit (T2CON<3> or T4CON<3> = 1).
Select the prescaler ratio for Timer2 or Timer4
using the TCKPS<1:0> bits.
Set the Clock and Gating modes using the TCS
and TGATE bits.
Load the timer period value. PR3 (or PR5) will
contain the most significant word of the value,
while PR2 (or PR4) contains the least significant
word.
If interrupts are required, set the interrupt enable
bit, T3IE or T5IE. Use the interrupt priority bits,
T3IP<2:0> or T5IP<2:0>, to set the interrupt priority. Note that while Timer2 or Timer4 controls
the timer, the interrupt appears as a Timer3 or
Timer5 interrupt.
Set the TON bit (= 1).
The timer value, at any point, is stored in the register
pair: TMR3:TMR2 (or TMR5:TMR4). TMR3 (TMR5)
always contains the most significant word of the count,
while TMR2 (TMR4) contains the least significant word.
To configure any of the timers for individual 16-bit
operation:
1.
2.
3.
4.
5.
6.
Clear the T32 bit corresponding to that timer
(T2CON<3> for Timer2 and Timer3 or
T4CON<3> for Timer4 and Timer5).
Select the timer prescaler ratio using the
TCKPS<1:0> bits.
Set the Clock and Gating modes using the TCS
and TGATE bits.
Load the timer period value into the PRx register.
If interrupts are required, set the interrupt enable
bit, TxIE; use the priority bits, TxIP<2:0>, to set
the interrupt priority.
Set the TON bit (TxCON<15> = 1).
For 32-bit operation, T3CON and T5CON
control bits are ignored. Only T2CON and
T4CON control bits are used for setup and
control. Timer2 and Timer4 clock and gate
inputs are utilized for the 32-bit timer
modules, but an interrupt is generated
with the Timer3 or Timer5 interrupt flags.
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FIGURE 12-1:
TIMER2/3 AND TIMER4/5 (32-BIT) BLOCK DIAGRAM
TCKPS<1:0>
2
TON
T2CK
(T4CK)
1x
Gate
Sync
01
TCY
00
Prescaler
1, 8, 64, 256
TGATE
TGATE
TCS
Q
1
Set T3IF (T5IF)
Q
0
PR3
(PR5)
A/D Event Trigger*
Equal
D
CK
PR2
(PR4)
Comparator
MSB
LSB
TMR3
(TMR5)
Reset
TMR2
(TMR4)
Sync
16
Read TMR2 (TMR4)
Write TMR2 (TMR4)
16
TMR3HLD
(TMR5HLD)
16
Data Bus<15:0>
Note:
*
The 32-bit Timer Configuration bit, T32, must be set for 32-bit timer/counter operation. All control bits are
respective to the T2CON and T4CON registers.
The A/D Event Trigger is only available on Timer2/3.
DS39747F-page 114
 2005-2012 Microchip Technology Inc.
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FIGURE 12-2:
TIMER2 AND TIMER4 (16-BIT SYNCHRONOUS) BLOCK DIAGRAM
TON
T2CK
(T4CK)
TCKPS<1:0>
2
1x
Gate
Sync
Prescaler
1, 8, 64, 256
01
00
TGATE
TCS
TCY
1
Set T2IF (T4IF)
0
Reset
Equal
Q
D
Q
CK
TGATE
TMR2 (TMR4)
Sync
Comparator
PR2 (PR4)
FIGURE 12-3:
TIMER3 AND TIMER5 (16-BIT SYNCHRONOUS) BLOCK DIAGRAM
T3CK
(T5CK)
Sync
1x
TON
TCKPS<1:0>
2
Prescaler
1, 8, 64, 256
01
00
TGATE
TCY
1
Set T3IF (T5IF)
0
Reset
A/D Event Trigger*
Equal
Q
D
Q
CK
TCS
TGATE
TMR3 (TMR5)
Comparator
PR3 (PR5)
*
The A/D Event Trigger is available only on Timer2/3.
 2005-2012 Microchip Technology Inc.
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REGISTER 12-1:
TxCON: TIMER2 AND TIMER4 CONTROL REGISTER
R/W-0
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
TON
—
TSIDL
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
—
TGATE
R/W-0
TCKPS1
R/W-0
R/W-0
U-0
R/W-0
U-0
TCKPS0
T32(1)
—
TCS
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
TON: Timerx On bit
When TxCON<3> = 1:
1 = Starts 32-bit Timerx/y
0 = Stops 32-bit Timerx/y
When TxCON<3> = 0:
1 = Starts 16-bit Timerx
0 = Stops 16-bit Timerx
bit 14
Unimplemented: Read as ‘0’
bit 13
TSIDL: Stop in Idle Mode bit
1 = Discontinues module operation when the device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-7
Unimplemented: Read as ‘0’
bit 6
TGATE: Timerx Gated Time Accumulation Enable bit
When TCS = 1:
This bit is ignored.
When TCS = 0:
1 = Gated time accumulation is enabled
0 = Gated time accumulation is disabled
bit 5-4
TCKPS<1:0>: Timer2 Input Clock Prescale Select bits
11 = 1:256
10 = 1:64
01 = 1:8
00 = 1:1
bit 3
T32: 32-Bit Timer Mode Select bit(1)
1 = Timerx and Timery form a single 32-bit timer
0 = Timerx and Timery act as two 16-bit timers
bit 2
Unimplemented: Read as ‘0’
bit 1
TCS: Timerx Clock Source Select bit
1 = External clock from pin, TxCK (on the rising edge)
0 = Internal clock (FOSC/2)
bit 0
Unimplemented: Read as ‘0’
Note 1:
In 32-bit mode, the T3CON or T5CON control bits do not affect 32-bit timer operation.
DS39747F-page 116
 2005-2012 Microchip Technology Inc.
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REGISTER 12-2:
R/W-0
TON
(1)
TyCON: TIMER3 AND TIMER5 CONTROL REGISTER
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
—
TSIDL(1)
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
R/W-0
R/W-0
—
TGATE(1)
TCKPS1(1)
TCKPS0(1)
U-0
—
U-0
R/W-0
U-0
—
TCS(1)
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
TON: Timery On bit(1)
1 = Starts 16-bit Timery
0 = Stops 16-bit Timery
bit 14
Unimplemented: Read as ‘0’
bit 13
TSIDL: Stop in Idle Mode bit(1)
1 = Discontinues module operation when the device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-7
Unimplemented: Read as ‘0’
bit 6
TGATE: Timery Gated Time Accumulation Enable bit(1)
When TCS = 1:
This bit is ignored.
When TCS = 0:
1 = Gated time accumulation is enabled
0 = Gated time accumulation is disabled
bit 5-4
TCKPS<1:0>: Timery Input Clock Prescale Select bits(1)
11 = 1:256
10 = 1:64
01 = 1:8
00 = 1:1
bit 3-2
Unimplemented: Read as ‘0’
bit 1
TCS: Timery Clock Source Select bit(1)
1 = External clock from pin, TyCK (on the rising edge)
0 = Internal clock (FOSC/2)
bit 0
Unimplemented: Read as ‘0’
Note 1:
x = Bit is unknown
When 32-bit operation is enabled (T2CON<3> = 1), these bits have no effect on Timery operation; all timer
functions are set through T2CON.
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NOTES:
DS39747F-page 118
 2005-2012 Microchip Technology Inc.
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13.0
INPUT CAPTURE
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 15. “Input Capture” (DS39701) in the “PIC24F Family
Reference Manual” for more information.
The input capture module has multiple operating
modes, which are selected via the ICxCON register.
The operating modes include:
• Capture timer value on every fourth rising edge of
input, applied at the ICx pin
• Capture timer value on every 16th rising edge of
input, applied at the ICx pin
• Capture timer value on every rising and every
falling edge of input, applied at the ICx pin
• Device wake-up from capture pin during CPU
Sleep and Idle modes
The input capture module has a four-level FIFO buffer.
The number of capture events required to generate a
CPU interrupt can be selected by the user.
• Capture timer value on every falling edge of input,
applied at the ICx pin
• Capture timer value on every rising edge of input,
applied at the ICx pin
FIGURE 13-1:
INPUT CAPTURE BLOCK DIAGRAM
From 16-Bit Timers
TMRy
TMRx
16
1
Prescaler
Counter
(1, 4, 16)
ICx Pin
3
16
0
FIFO
R/W
Logic
Edge Detection Logic
and
Clock Synchronizer
ICTMR
(ICxCON<7>)
ICM<2:0> (ICxCON<2:0>)
Mode Select
ICOV, ICBNE (ICxCON<4:3>)
ICxBUF
ICI<1:0>
ICxCON
System Bus
Interrupt
Logic
Set Flag ICxIF
(in IFSx Register)
Note: An ‘x’ in a signal, register or bit name denotes the number of the capture channel.
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13.1
Input Capture Registers
REGISTER 13-1:
ICxCON: INPUT CAPTURE x CONTROL REGISTER
U-0
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
—
—
ICSIDL
—
—
—
—
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R-0, HC
R/W-0, HC
R/W-0
R/W-0
R/W-0
ICTMR(1)
ICI1
ICI0
ICOV
ICBNE
ICM2
ICM1
ICM0
bit 7
bit 0
Legend:
HC = Hardware Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
Unimplemented: Read as ‘0’
bit 13
ICSIDL: Input Capture x Module Stop in Idle Control bit
1 = Input capture module will Halt in CPU Idle mode
0 = Input capture module will continue to operate in CPU Idle mode
bit 12-8
Unimplemented: Read as ‘0’
bit 7
ICTMR: Input Capture x Timer Select bit(1)
1 = TMR2 contents are captured on capture event
0 = TMR3 contents are captured on capture event
bit 6-5
ICI<1:0>: Select Number of Captures per Interrupt bits
11 = Interrupt on every fourth capture event
10 = Interrupt on every third capture event
01 = Interrupt on every second capture event
00 = Interrupt on every capture event
bit 4
ICOV: Input Capture x Overflow Status Flag bit (read-only)
1 = Input capture overflow occurred
0 = No input capture overflow occurred
bit 3
ICBNE: Input Capture x Buffer Empty Status bit (read-only)
1 = Input capture buffer is not empty, at least one more capture value can be read
0 = Input capture buffer is empty
bit 2-0
ICM<2:0>: Input Capture x Mode Select bits
111 = Input capture functions as an interrupt pin only when the device is in Sleep or Idle mode (rising
edge detect only, all other control bits are not applicable)
110 = Unused (module is disabled)
101 = Capture mode, every 16th rising edge
100 = Capture mode, every 4th rising edge
011 = Capture mode, every rising edge
010 = Capture mode, every falling edge
001 = Capture mode, every edge (rising and falling); ICI<1:0> does not control interrupt generation
for this mode
000 = Input capture module is turned off
Note 1:
Timer selections may vary. Refer to the specific device data sheet for details.
DS39747F-page 120
 2005-2012 Microchip Technology Inc.
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14.0
Note:
14.1
• Dual Compare Match mode generating:
- Single Output Pulse mode
- Continuous Output Pulse mode
• Simple Pulse-Width Modulation mode:
- with Fault protection input
- without Fault protection input
OUTPUT COMPARE
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 16. “Output
Compare” (DS39706) in the “PIC24F
Family Reference Manual” for more
information.
14.2
MODES OF OPERATION
Each output compare module has the following modes
of operation:
• Single Compare Match mode
FIGURE 14-1:
Setup for Single Output Pulse
Generation
When the OCM control bits (OCxCON<2:0>) are set to
‘100’, the selected output compare channel initializes
the OCx pin to the low state and generates a single
output pulse.
OUTPUT COMPARE MODULE BLOCK DIAGRAM
Set Flag bit
OCxIF(1)
OCxRS(1)
Output
Logic
OCxR(1)
3
OCM<2:0>
Mode Select
Comparator
0
16
OCTSEL
1
0
S Q
R
OCx(1)
Output Enable
OCFA or OCFB(2)
1
16
TMR Register Inputs
from Time Bases
(see Note 3)
Period Match Signals
from Time Bases
(see Note 3)
Where ‘x’ is shown, reference is made to the registers associated with the respective output compare channels, 1
through 5.
2: OCFA pin controls OC1-OC4 channels; OCFB pin controls OC5.
3: Each output compare channel can use either Timer2 or Timer3.
Note 1:
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To generate a single output pulse, the following steps
are required (these steps assume the timer source is
initially turned off, but this is not a requirement for the
module operation):
1.
Determine the instruction clock cycle time. Take
into account the frequency of the external clock
to the timer source (if one is used) and the timer
prescaler settings.
2. Calculate time to the rising edge of the output
pulse relative to the TMRy start value (0000h).
3. Calculate the time to the falling edge of the pulse
based on the desired pulse width and the time to
the rising edge of the pulse.
4. Write the values computed in Steps 2 and 3
above into the Compare register, OCxR, and the
Secondary
Compare
register,
OCxRS,
respectively.
5. Set the Timer Period register, PRy, to a value
equal to or greater than the value in OCxRS, the
Secondary Compare register.
6. Set the OCM bits to ‘100’ and the OCTSEL
(OCxCON<3>) bit to the desired timer source.
The OCx pin state will now be driven low.
7. Set the TON (TyCON<15>) bit to ‘1’, which
enables the compare time base to count.
8. Upon the first match between TMRy and OCxR,
the OCx pin will be driven high.
9. When the incrementing timer, TMRy, matches the
Secondary Compare register, OCxRS, the
second and trailing edge (high-to-low) of the pulse
is driven onto the OCx pin. No additional pulses
are driven onto the OCx pin and it remains at low.
As a result of the second compare match event,
the OCxIF interrupt flag bit is set which will result
in an interrupt, if it is enabled, by setting the
OCxIE bit. For further information on peripheral interrupts, refer to Section 7.0 “Interrupt
Controller”.
10. To initiate another single pulse output, change the
Timer and Compare register settings, if needed,
and then issue a write to set the OCM bits to ‘100’.
Disabling and re-enabling of the timer, and clearing the TMRy register are not required, but may
be advantageous for defining a pulse from a
known event time boundary.
The output compare module does not have to be disabled after the falling edge of the output pulse. Another
pulse can be initiated by rewriting the value of the
OCxCON register.
DS39747F-page 122
14.3
Setup for Continuous Output
Pulse Generation
When the OCM control bits (OCxCON<2:0>) are set to
‘101’, the selected output compare channel initializes
the OCx pin to the low state, and generates output
pulses on each and every compare match event.
For the user to configure the module for the generation
of a continuous stream of output pulses, the following
steps are required (these steps assume the timer
source is initially turned off, but this is not a requirement
for the module operation):
1.
Determine the instruction clock cycle time. Take
into account the frequency of the external clock
to the timer source (if one is used) and the timer
prescaler settings.
2. Calculate the time to the rising edge of the output
pulse relative to the TMRy start value (0000h).
3. Calculate the time to the falling edge of the pulse,
based on the desired pulse width and the time to
the rising edge of the pulse.
4. Write the values computed in Step 2 and 3
above, into the Compare register, OCxR, and
the Secondary Compare register, OCxRS,
respectively.
5. Set the Timer Period register, PRy, to a value,
equal to or greater than, the value in OCxRS, the
Secondary Compare register.
6. Set the OCM bits to ‘101’ and the OCTSEL bit to
the desired timer source. The OCx pin state will
now be driven low.
7. Enable the compare time base by setting the TON
(TyCON<15>) bit to ‘1’.
8. Upon the first match between TMRy and OCxR,
the OCx pin will be driven high.
9. When the compare time base, TMRy, matches
the Secondary Compare register, OCxRS, the
second and trailing edge (high-to-low) of the pulse
is driven onto the OCx pin.
10. As a result of the second compare match event,
the OCxIF interrupt flag bit is set.
11. When the compare time base and the value in its
respective Period register match, the TMRy
register resets to 0x0000 and resumes counting.
12. Steps 8 through 11 are repeated and a continuous
stream of pulses is generated indefinitely. The
OCxIF flag is set on each OCxRS-TMRy compare
match event.
 2005-2012 Microchip Technology Inc.
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14.4
EQUATION 14-1:
Pulse-Width Modulation Mode
The following steps should be taken when configuring
the output compare module for PWM operation:
1.
2.
3.
4.
5.
6.
PWM Period = [(PRy) + 1] • TCY • (Timer Prescale Value)
where:
PWM Frequency = 1/[PWM Period]
Set the PWM period by writing to the selected
Timer Period register (PRy).
Set the PWM duty cycle by writing to the OCxRS
register.
Write the OCxR register with the initial duty
cycle.
Enable interrupts, if required, for the timer and
output compare modules. The output compare
interrupt is required for PWM Fault pin
utilization.
Configure the output compare module for one of
two PWM operation modes by writing to the
Output Compare mode bits, OCM<2:0>
(OCxCON<2:0>).
Set the TMRy prescale value and enable the
time base by setting TON (TxCON<15>) = 1.
Note:
14.4.1
Note 1: Based on TCY = TOSC * 2; Doze mode and
PLL are disabled.
Note:
14.4.2
A PRy value of N will produce a PWM
period of N + 1 time base count cycles.
For example, a value of 7 written into the
PRy register will yield a period consisting
of 8 time base cycles.
PWM DUTY CYCLE
The PWM duty cycle is specified by writing to the
OCxRS register. The OCxRS register can be written to
at any time, but the duty cycle value is not latched into
OCxR until a match between PRy and TMRy occurs
(i.e., the period is complete). This provides a double
buffer for the PWM duty cycle and is essential for glitchless PWM operation. In the PWM mode, OCxR is a
read-only register.
The OCxR register should be initialized
before the output compare module is first
enabled. The OCxR register becomes a
Read-Only Duty Cycle register when the
module is operated in the PWM modes.
The value held in OCxR will become the
PWM duty cycle for the first PWM period.
The contents of the Duty Cycle Buffer
register, OCxRS, will not be transferred
into OCxR until a time base period match
occurs.
Some important boundary parameters of the PWM duty
cycle include:
• If the Duty Cycle register, OCxR, is loaded with
0000h, the OCx pin will remain low (0% duty cycle).
• If OCxR is greater than PRy (Timer Period register),
the pin will remain high (100% duty cycle).
• If OCxR is equal to PRy, the OCx pin will be low
for one time base count value and high for all
other count values.
PWM PERIOD
The PWM period is specified by writing to PRy, the
Timer Period register. The PWM period can be
calculated using Equation 14-1.
EQUATION 14-2:
CALCULATING THE PWM
PERIOD(1)
See Example 14-1 for PWM mode timing details.
Table 14-1 shows example PWM frequencies and
resolutions for a device operating at 10 MIPS.
CALCULATION FOR MAXIMUM PWM RESOLUTION(1)
log10
Maximum PWM Resolution (bits) =
(F
PWM
)
FCY
• (Timer Prescale Value)
bits
log10(2)
Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled.
 2005-2012 Microchip Technology Inc.
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PIC24FJ128GA010 FAMILY
EXAMPLE 14-1:
PWM PERIOD AND DUTY CYCLE CALCULATIONS(1)
1. Find the Period register value for a desired PWM frequency of 52.08 kHz, where FOSC = 8 MHz with PLL (32 MHz device clock
rate) and a Timer2 prescaler setting of 1:1.
TCY = 2/FOSC = 62.5 ns
PWM Period = 1/PWM Frequency = 1/52.08 kHz = 19.2 s
PWM Period = (PR2 + 1) • TCY • (Timer2 Prescale Value)
19.2 s
= (PR2 + 1) • 62.5 ns • 1
PR2
= 306
2. Find the maximum resolution of the duty cycle that can be used with a 52.08 kHz frequency and a 32 MHz device clock rate:
PWM Resolution = log10 (FCY/FPWM)/log102) bits
= (log10 (16 MHz/52.08 kHz)/log102) bits
= 8.3 bits
Note 1: Based on TCY = TOSC * 2; Doze mode and PLL are disabled.
TABLE 14-1:
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 4 MIPS (FCY = 4 MHz)(1)
PWM Frequency
7.6 Hz
61 Hz
122 Hz
977 Hz
3.9 kHz
31.3 kHz
125 kHz
Timer Prescaler Ratio
8
1
1
1
1
1
1
Period Register Value
FFFFh
FFFFh
7FFFh
0FFFh
03FFh
007Fh
001Fh
16
16
15
12
10
7
5
Resolution (bits)
Note 1:
Based on TCY = TOSC * 2; Doze mode and PLL are disabled.
TABLE 14-2:
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 16 MIPS (FCY = 16 MHz)(1)
PWM Frequency
30.5 Hz
244 Hz
488 Hz
3.9 kHz
15.6 kHz
125 kHz
500 kHz
Timer Prescaler Ratio
8
1
1
1
1
1
1
Period Register Value
FFFFh
FFFFh
7FFFh
0FFFh
03FFh
007Fh
001Fh
16
16
15
12
10
7
5
Resolution (bits)
Note 1:
Based on TCY = TOSC * 2; Doze mode and PLL are disabled.
DS39747F-page 124
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 14-1:
OCxCON: OUTPUT COMPARE x CONTROL REGISTER
U-0
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
—
—
OCSIDL
—
—
—
—
—
bit 15
bit 8
U-0
U-0
—
—
U-0
R-0, HC
R/W-0
R/W-0
R/W-0
R/W-0
—
OCFLT(1)
OCTSEL(1)
OCM2
OCM1
OCM0
bit 7
bit 0
Legend:
HC = Hardware Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
Unimplemented: Read as ‘0’
bit 13
OCSIDL: Stop Output Compare x Module Stop in Idle Control bit
1 = Output capture x will halt in CPU Idle mode
0 = Output capture x will continue to operate in CPU Idle mode
bit 12-5
Unimplemented: Read as ‘0’
bit 4
OCFLT: PWM Fault Condition Status bit(1)
1 = PWM Fault condition has occurred (cleared in HW only)
0 = No PWM Fault condition has occurred (this bit is only used when OCM<2:0> = 111)
bit 3
OCTSEL: Output Compare x Timer Select bit(1)
1 = Timer3 is the clock source for output Compare x
0 = Timer2 is the clock source for output Compare x
bit 2-0
OCM<2:0>: Output Compare x Mode Select bits
111 = PWM mode on OCx, Fault pin is enabled(2)
110 = PWM mode on OCx, Fault pin is disabled(2)
101 = Initialize the OCx pin low, generate continuous output pulses on the OCx pin
100 = Initialize the OCx pin low, generate single output pulse on the OCx pin
011 = Compare event toggles OCx pin
010 = Initialize the OCx pin high, a compare event forces the OCx pin low
001 = Initialize the OCx pin low, a compare event forces the OCx pin high
000 = Output compare channel is disabled
Note 1:
2:
Refer to the device data sheet for specific time bases available to the output compare module.
The OCFA pin controls the OC1-OC4 channels; OCFB pin controls the OC5 channel.
 2005-2012 Microchip Technology Inc.
DS39747F-page 125
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 126
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
15.0
Note:
SERIAL PERIPHERAL
INTERFACE (SPI)
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference source. Refer to Section 23. “Serial
Peripheral Interface (SPI)” (DS39699) in
the “PIC24F Family Reference Manual”
for more information.
The Serial Peripheral Interface (SPI) module is a
synchronous serial interface useful for communicating
with other peripheral or microcontroller devices. These
peripheral devices may be serial EEPROMs, shift registers, display drivers, A/D Converters, etc. The SPI
module is compatible with SPI and SIOP interfaces
from Motorola®.
The module supports operation in two buffer modes. In
Standard mode, data is shifted through a single serial
buffer. In Enhanced Buffer mode, data is shifted
through an 8-level FIFO buffer.
Note:
Do not perform read-modify-write operations (such as bit-oriented instructions) on
the SPIxBUF register, in either Standard
or Enhanced Buffer mode.
To set up the SPI module for the Standard Master mode
of operation:
1.
2.
3.
4.
5.
To set up the SPI module for the Standard Slave mode
of operation:
1.
2.
The module also supports a basic framed SPI protocol
while operating in either Master or Slave modes. A total
of four framed SPI configurations are supported.
The SPI serial interface consists of four pins:
•
•
•
•
SDIx: Serial Data Input
SDOx: Serial Data Output
SCKx: Shift Clock Input or Output
SSx: Active-Low Slave Select or Frame
Synchronization I/O Pulse
The SPI module can be configured to operate using
2, 3 or 4 pins. In the 3-pin mode, SSx is not used. In the
2-pin mode, both SDOx and SSx are not used.
A block diagram of the module is shown in Figure 15-1
and Figure 15-2.
Note:
If using interrupts:
a) Clear the SPIxIF bit in the respective IFSx
register.
b) Set the SPIxIE bit in the respective IECx
register.
c) Write the SPIxIP bits in the respective IPCx
register to set the interrupt priority.
Write the desired settings to the SPIxCON
register with MSTEN (SPIxCON1<5>) = 1.
Clear the SPIROV bit (SPIxSTAT<6>).
Enable SPI operation by setting the SPIEN bit
(SPIxSTAT<15>).
Write the data to be transmitted to the SPIxBUF
register. Transmission (and reception) will start
as soon as data is written to the SPIxBUF
register.
3.
4.
5.
6.
7.
Clear the SPIxBUF register.
If using interrupts:
a) Clear the SPIxIF bit in the respective IFSx
register.
b) Set the SPIxIE bit in the respective IECx
register.
c) Write the SPIxIP bits in the respective IPCx
register to set the interrupt priority.
Write the desired settings to the SPIxCON1 and
SPIxCON2
registers
with
MSTEN
(SPIxCON1<5>) = 0.
Clear the SMP bit.
If the CKE bit is set, then the SSEN bit
(SPIxCON1<7>) must be set to enable the
SSx pin.
Clear the SPIROV bit (SPIxSTAT<6>).
Enable SPI operation by setting the SPIEN bit
(SPIxSTAT<15>).
In this section, the SPI modules are
referred to together as SPIx, or separately
as SPI1 and SPI2. Special Function Registers will follow a similar notation. For
example, SPIxCON refers to the control
register for the SPI1 or SPI2 module.
 2005-2012 Microchip Technology Inc.
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PIC24FJ128GA010 FAMILY
To set up the SPI module for the Enhanced Buffer
Master mode of operation:
To set up the SPI module for the Enhanced Buffer
Slave mode of operation:
1.
1.
2.
2.
3.
4.
5.
6.
If using interrupts:
a) Clear the SPIxIF bit in the respective IFSx
register.
b) Set the SPIxIE bit in the respective IECx
register.
c) Write the SPIxIP bits in the respective IPCx
register.
Write the desired settings to the SPIxCON1
and SPIxCON2 registers with MSTEN
(SPIxCON1<5>) = 1.
Clear the SPIROV bit (SPIxSTAT<6>).
Select Enhanced Buffer mode by setting the
SPIBEN bit (SPIxCON2<0>).
Enable SPI operation by setting the SPIEN bit
(SPIxSTAT<15>).
Write the data to be transmitted to the SPIxBUF
register. Transmission (and reception) will start
as soon as data is written to the SPIxBUF
register.
FIGURE 15-1:
3.
4.
5.
6.
7.
8.
Clear the SPIxBUF register.
If using interrupts:
• Clear the SPIxIF bit in the respective IFSx
register.
• Set the SPIxIE bit in the respective IECx
register.
• Write the SPIxIP bits in the respective IPCx
register to set the interrupt priority.
Write the desired settings to the SPIxCON1
and SPIxCON2 registers with MSTEN
(SPIxCON1<5>) = 0.
Clear the SMP bit.
If the CKE bit is set, then the SSEN bit must be
set, thus enabling the SSx pin.
Clear the SPIROV bit (SPIxSTAT<6>).
Select Enhanced Buffer mode by setting the
SPIBEN bit (SPIxCON2<0>).
Enable SPI operation by setting the SPIEN bit
(SPIxSTAT<15>).
SPIx MODULE BLOCK DIAGRAM (STANDARD MODE)
SCKx
1:1 to 1:8
Secondary
Prescaler
SSx/FSYNCx
Sync
Control
1:1/4/16/64
Primary
Prescaler
Select
Edge
Control
Clock
SPIxCON1<1:0>
SPIxCON1<4:2>
Shift Control
SDOx
Enable
Master Clock
bit 0
SDIx
FCY
SPIxSR
Transfer
Transfer
SPIxBUF
Read SPIxBUF
Write SPIxBUF
16
Internal Data Bus
DS39747F-page 128
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
FIGURE 15-2:
SPIx MODULE BLOCK DIAGRAM (ENHANCED MODE)
SCKx
1:1 to 1:8
Secondary
Prescaler
SSx/FSYNCx
Sync
Control
1:1/4/16/64
Primary
Prescaler
Select
Edge
Control
Clock
SPIxCON1<1:0>
Shift Control
SDOx
SPIxCON1<4:2>
Enable
Master Clock
bit 0
SDIx
FCY
SPIxSR
Transfer
Transfer
8-Level FIFO
Receive Buffer
8-Level FIFO
Transmit Buffer
SPIxBUF
Read SPIxBUF
Write SPIxBUF
16
Internal Data Bus
 2005-2012 Microchip Technology Inc.
DS39747F-page 129
PIC24FJ128GA010 FAMILY
REGISTER 15-1:
SPIxSTAT: SPIx STATUS AND CONTROL REGISTER
R/W-0
U-0
R/W-0
U-0
U-0
R-0
R-0
R-0
SPIEN
—
SPISIDL
—
—
SPIBEC2
SPIBEC1
SPIBEC0
bit 15
bit 8
R/W-0
R/C-0
R/W-0
R/W-0
R/W-0
R/W-0
R-0
R-0
SRMPT
SPIROV
SRXMPT
SISEL2
SISEL1
SISEL0
SPITBF
SPIRBF
bit 7
bit 0
Legend:
C = Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
SPIEN: SPIx Enable bit
1 = Enables module and configures SCKx, SDOx, SDIx and SSx as serial port pins
0 = Disables module
bit 14
Unimplemented: Read as ‘0’
bit 13
SPISIDL: Stop in Idle Mode bit
1 = Discontinues module operation when device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-11
Unimplemented: Read as ‘0’
bit 10-8
SPIBEC<2:0>: SPIx Buffer Element Count bits
Master mode:
Number of SPI transfers pending.
Slave mode:
Number of SPI transfers unread.
bit 7
SRMPT: Shift Register (SPIxSR) Empty bit (valid in Enhanced Buffer mode)
1 = SPIx Shift register is empty and ready to send or receive
0 = SPIx Shift register is not empty; read as ‘0’
bit 6
SPIROV: Receive Overflow Flag bit
1 = A new byte/word is completely received and discarded; the user software has not read the previous
data in the SPIxBUF register
0 = No overflow has occurred
bit 5
SRXMPT: Receive FIFO Empty bit (valid in Enhanced Buffer mode)
1 = Receive FIFO is empty
0 = Receive FIFO is not empty’
bit 4-2
SISEL<2:0>: SPIx Buffer Interrupt Mode bits (valid in Enhanced Buffer mode)
111 = Interrupt when the SPIx transmit buffer is full (SPITBF bit is set)
110 = Interrupt when the last bit is shifted into SPIxSR, as a result, the TX FIFO is empty
101 = Interrupt when the last bit is shifted out of SPIxSR, now the transmit is complete
100 = Interrupt when one data is shifted into the SPIxSR, as a result, the TX FIFO has one open spot
011 = Interrupt when the SPIx receive buffer is full (SPIRBF bit is set)
010 = Interrupt when the SPIx receive buffer is 3/4 or more full
001 = Interrupt when data is available in the receive buffer (SRMPT bit is set)
000 = Interrupt when the last data in the receive buffer is read, and as a result, the buffer is empty
(SRXMPT bit set)
DS39747F-page 130
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 15-1:
SPIxSTAT: SPIx STATUS AND CONTROL REGISTER (CONTINUED)
bit 1
SPITBF: SPIx Transmit Buffer Full Status bit
1 = Transmit not yet started, SPIxTXB is full
0 = Transmit started, SPIxTXB is empty
In Standard Buffer mode:
Automatically set in hardware when the CPU writes to the SPIxBUF location, loading SPIxTXB.
Automatically cleared in hardware when the SPIx module transfers data from SPIxTXB to SPIxSR.
In Enhanced Buffer mode:
Automatically set in hardware when the CPU writes to the SPIxBUF location, loading the last available
buffer location. Automatically cleared in hardware when a buffer location is available for a CPU write.
bit 0
SPIRBF: SPIx Receive Buffer Full Status bit
1 = Receive complete, SPIxRXB is full
0 = Receive is not complete, SPIxRXB is empty
In Standard Buffer mode:
Automatically set in hardware when the SPIx transfers data from SPIxSR to SPIxRXB. Automatically
cleared in hardware when the core reads the SPIxBUF location, reading SPIxRXB.
In Enhanced Buffer mode:
Automatically set in hardware when the SPIx transfers data from SPIxSR to the buffer, filling the last
unread buffer location. Automatically cleared in hardware when a buffer location is available for a
transfer from SPIxSR.
 2005-2012 Microchip Technology Inc.
DS39747F-page 131
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REGISTER 15-2:
SPIXCON1: SPIx CONTROL REGISTER 1
U-0
—
bit 15
U-0
—
U-0
—
R/W-0
DISSCK
R/W-0
DISSDO
R/W-0
MODE16
R/W-0
SMP
R/W-0
CKE(1)
bit 8
R/W-0
SSEN
bit 7
R/W-0
CKP
R/W-0
MSTEN
R/W-0
SPRE2
R/W-0
SPRE1
R/W-0
SPRE0
R/W-0
PPRE1
R/W-0
PPRE0
bit 0
Legend:
R = Readable bit
-n = Value at POR
bit 15-13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4-2
bit 1-0
Note 1:
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Unimplemented: Read as ‘0’
DISSCK: Disable SCKx pin bit (SPI Master modes only)
1 = Internal SPI clock is disabled, the pin functions as an I/O
0 = Internal SPI clock is enabled
DISSDO: Disable SDOx pin bit
1 = SDOx pin is not used by the module; the pin functions as an I/O
0 = SDOx pin is controlled by the module
MODE16: Word/Byte Communication Select bit
1 = Communication is word-wide (16 bits)
0 = Communication is byte-wide (8 bits)
SMP: SPIx Data Input Sample Phase bit
Master mode:
1 = Input data is sampled at the end of data output time
0 = Input data is sampled at the middle of data output time
Slave mode:
SMP must be cleared when SPIx is used in Slave mode.
CKE: SPIx Clock Edge Select bit(1)
1 = Serial output data changes on transition from active clock state to Idle clock state (see bit 6)
0 = Serial output data changes on transition from Idle clock state to active clock state (see bit 6)
SSEN: Slave Select Enable bit (Slave mode)
1 = SSx pin is used for Slave mode
0 = SSx pin is not used by module; pin is controlled by port function
CKP: Clock Polarity Select bit
1 = Idle state for clock is a high level; active state is a low level
0 = Idle state for clock is a low level; active state is a high level
MSTEN: Master Mode Enable bit
1 = Master mode
0 = Slave mode
SPRE<2:0>: Secondary Prescale bits (Master mode)
111 = Secondary prescale 1:1
110 = Secondary prescale 2:1
...
000 = Secondary prescale 8:1
PPRE<1:0>: Primary Prescale bits (Master mode)
11 = Primary prescale 1:1
10 = Primary prescale 4:1
01 = Primary prescale 16:1
00 = Primary prescale 64:1
The CKE bit is not used in the Framed SPI modes. The user should program this bit to ‘0’ for the Framed
SPI modes (FRMEN = 1).
DS39747F-page 132
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 15-3:
R/W-0
FRMEN
bit 15
SPIxCON2: SPIx CONTROL REGISTER 2
R/W-0
SPIFSD
R/W-0
SPIFPOL
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 14
bit 13
bit 12-2
bit 1
bit 0
U-0
—
U-0
—
bit 8
U-0
—
bit 15
U-0
—
W = Writable bit
‘1’ = Bit is set
U-0
—
R/W-0
SPIFE
R/W-0
SPIBEN
bit 0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
FRMEN: Framed SPIx Support bit
1 = Framed SPIx support is enabled
0 = Framed SPIx support is disabled
SPIFSD: Frame Sync Pulse Direction Control on SSx Pin bit
1 = Frame sync pulse input (slave)
0 = Frame sync pulse output (master)
SPIFPOL: Frame Sync Pulse Polarity bit (Frame mode only)
1 = Frame sync pulse is active-high
0 = Frame sync pulse is active-low
Unimplemented: Read as ‘0’
SPIFE: Frame Sync Pulse Edge Select bit
1 = Frame sync pulse coincides with the first bit clock
0 = Frame sync pulse precedes the first bit clock
SPIBEN: Enhanced Buffer Enable bit
1 = Enhanced Buffer is enabled
0 = Enhanced Buffer is disabled (Legacy mode)
 2005-2012 Microchip Technology Inc.
DS39747F-page 133
PIC24FJ128GA010 FAMILY
FIGURE 15-3:
SPI MASTER/SLAVE CONNECTION (STANDARD MODE)
PROCESSOR 1 (SPI Master)
PROCESSOR 2 (SPI Slave)
SDIx
SDOx
Serial Receive Buffer
(SPIxRXB)
Serial Receive Buffer
(SPIxRXB)
SDOx
SDIx
Shift Register
(SPIxSR)
LSb
MSb
MSb
Serial Transmit Buffer
(SPIxTXB)
LSb
Serial Transmit Buffer
(SPIxTXB)
SCKx
SPIx Buffer
(SPIxBUF)
Shift Register
(SPIxSR)
Serial Clock
SCKx
SPIx Buffer
(SPIxBUF)
SSx
(SSEN (SPIxCON1<7>) = 1 and MSTEN (SPIxCON1<5>) = 0)
(MSTEN (SPIxCON1<5> = 1))
Note
1:
2:
Using the SSx pin in the Slave mode of operation is optional.
User must write transmit data to read received data from SPIxBUF. The SPIxTXB and SPIxRXB registers are memory
mapped to SPIxBUF.
FIGURE 15-4:
SPI MASTER/SLAVE CONNECTION (ENHANCED BUFFER MODES)
PROCESSOR 1 (SPI Enhanced Buffer Master)
Shift Register
(SPIxSR)
PROCESSOR 2 (SPI Enhanced Buffer Slave)
SDOx
SDIx
SDIx
SDOx
LSb
MSb
MSb
8-Level FIFO Buffer
SPIx Buffer
(SPIxBUF)
Note
1:
2:
LSb
8-Level FIFO Buffer
SCKx
SSx
MSTEN (SPIxCON1<5> = 1 and
SPIBEN (SPIxCON2<0>) = 1
Shift Register
(SPIxSR)
Serial Clock
SCKx
SPIx Buffer
(SPIxBUF)
SSx
SSEN (SPIxCON1<7>) = 1 and
MSTEN (SPIxCON1<5>) = 0 and
SPIBEN (SPIxCON2<0>) = 1
Using the SSx pin in Slave mode of operation is optional.
User must write transmit data to read received data from SPIxBUF. The SPIxTXB and SPIxRXB registers are memory
mapped to SPIxBUF.
DS39747F-page 134
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
FIGURE 15-5:
SPI MASTER, FRAME MASTER CONNECTION DIAGRAM
PROCESSOR 2
PIC24F
(SPI Slave, Frame Slave)
SDIx
SDOx
SDOx
SDIx
SCKx
SSx
FIGURE 15-6:
Serial Clock
Frame Sync
Pulse
SCKx
SSx
SPI MASTER, FRAME SLAVE CONNECTION DIAGRAM
PROCESSOR 2
PIC24F
SPI Master, Frame Slave)
SDOx
SDIx
SDIx
SDOx
SCKx
SSx
FIGURE 15-7:
Serial Clock
Frame Sync
Pulse
SCKx
SSx
SPI SLAVE, FRAME MASTER CONNECTION DIAGRAM
PROCESSOR 2
PIC24F
(SPI Slave, Frame Slave)
SDOx
SDIx
SDIx
SDOx
SCKx
SSx
FIGURE 15-8:
Serial Clock
Frame Sync.
Pulse
SCKx
SSx
SPI SLAVE, FRAME SLAVE CONNECTION DIAGRAM
PROCESSOR 2
PIC24F
(SPI Master, Frame Slave)
SDIx
SDOx
SDOx
SDIx
SCKx
SSx
 2005-2012 Microchip Technology Inc.
Serial Clock
Frame Sync
Pulse
SCKx
SSx
DS39747F-page 135
PIC24FJ128GA010 FAMILY
EQUATION 15-1:
RELATIONSHIP BETWEEN DEVICE AND SPI CLOCK SPEED(1)
FCY
FSCK =
Primary Prescaler * Secondary Prescaler
Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled.
TABLE 15-1:
SAMPLE SCK FREQUENCIES(1,2)
Secondary Prescaler Settings
FCY = 16 MHz
1:1
Primary Prescaler Settings
2:1
4:1
6:1
8:1
1:1
Invalid
8000
4000
2667
2000
4:1
4000
2000
1000
667
500
16:1
1000
500
250
167
125
64:1
250
125
63
42
31
1:1
5000
2500
1250
833
625
FCY = 5 MHz
Primary Prescaler Settings
Note 1:
2:
4:1
1250
625
313
208
156
16:1
313
156
78
52
39
64:1
78
39
20
13
10
Based on FCY = FOSC/2; Doze mode and PLL are disabled.
The SCKx frequencies are shown in kHz.
DS39747F-page 136
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
16.0
Note:
INTER-INTEGRATED CIRCUIT
(I2C™)
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 24. “InterIntegrated Circuit™ (I2C™)” (DS39702)
in the “PIC24F Family Reference Manual”
for more information.
The Inter-Integrated Circuit (I2C) module is a serial
interface useful for communicating with other peripheral or microcontroller devices. These peripheral
devices may be serial EEPROMs, display drivers, A/D
Converters, etc.
The I
•
•
•
•
•
•
•
•
•
2C
module supports these features:
Independent master and slave logic
7-bit and 10-bit device addresses
General call address, as defined in the I2C protocol
Clock stretching to provide delays for the
processor to respond to a slave data request
Both 100 kHz and 400 kHz bus specifications.
Configurable address masking
Multi-Master modes to prevent loss of messages
in arbitration
Bus Repeater mode, allowing the acceptance of
all messages as a slave, regardless of the
address
Automatic SCL
A block diagram of the module is shown in Figure 16-1.
 2005-2012 Microchip Technology Inc.
16.1
Communicating as a Master in a
Single Master Environment
The details of sending a message in Master mode
depends on the communications protocol for the device
being communicated with. Typically, the sequence of
events is as follows:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Assert a Start condition on SDAx and SCLx.
Send the I 2C device address byte to the slave
with a write indication.
Wait for and verify an Acknowledge from the
slave.
Send the first data byte (sometimes known as
the command) to the slave.
Wait for and verify an Acknowledge from the
slave.
Send the serial memory address low byte to the
slave.
Repeat Steps 4 and 5 until all data bytes are
sent.
Assert a Repeated Start condition on SDAx and
SCLx.
Send the device address byte to the slave with
a read indication.
Wait for and verify an Acknowledge from the
slave.
Enable master reception to receive serial
memory data.
Generate an ACK or NACK condition at the end
of a received byte of data.
Generate a Stop condition on SDAx and SCLx.
DS39747F-page 137
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FIGURE 16-1:
I2C™ BLOCK DIAGRAM
Internal
Data Bus
I2CxRCV
SCLx
Read
Shift
Clock
I2CxRSR
LSB
SDAx
Address Match
Match Detect
Write
I2CxMSK
Write
Read
I2CxADD
Read
Start and Stop
Bit Detect
Write
Start and Stop
Bit Generation
Control Logic
I2CxSTAT
Collision
Detect
Read
Write
I2CxCON
Acknowledge
Generation
Read
Clock
Stretching
Write
I2CxTRN
LSB
Read
Shift Clock
Reload
Control
BRG Down Counter
Write
I2CxBRG
Read
TCY/2
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16.2
Setting Baud Rate When
Operating as a Bus Master
16.3
The I2CxMSK register (Register 16-3) designates
address bit positions as “don’t care” for both 7-Bit and
10-Bit Addressing modes. Setting a particular bit location (= 1) in the I2CxMSK register causes the slave
module to respond, whether the corresponding
address bit value is a ‘0’ or ‘1’. For example, when
I2CxMSK is set to ‘00100000’, the slave module will
detect both addresses, ‘0000000’ and ‘00100000’.
To compute the Baud Rate Generator reload value, use
the following equation:
EQUATION 16-1:(1)
I2CxBRG = (FCY/FSCL – FCY/10,000,000) – 1
Note 1: Based on FCY = FOSC/2; Doze mode and
PLL are disabled.
TABLE 16-1:
Slave Address Masking
To enable address masking, the IPMI (Intelligent
Peripheral Management Interface) must be disabled by
clearing the IPMIEN bit (I2CxCON<11>).
I2C™ CLOCK RATES(1,3,4)
Required
System
FSCL
FCY
I2CxBRG Value
100 kHz
100 kHz
(Decimal)
(Hexadecimal)
Actual
FSCL
16 MHz
157
9D
100 kHz
8 MHz
78
4E
100 kHz
100 kHz
4 MHz
39
27
99 kHz
400 kHz
16 MHz
37
25
404 kHz
400 kHz
8 MHz
18
12
404 kHz
400 kHz
4 MHz
9
9
385 kHz(2)
400 kHz
2 MHz
4
4
385 kHz(2)
1 MHz
16 MHz
13
D
1,026 KHz
1 MHz
8 MHz
6
6
1,026 KHz
1 MHz
4 MHz
3
3
909 KHz
Note 1:
2:
3:
4:
Based on TCY = TOSC * 2; Doze mode and PLL are disabled.
This is the closest value to 400 kHz for this value of FCY.
FCY = 2 MHz is the minimum input clock frequency to have FSCL = 1 MHz.
I2CxBRG cannot have a value of less than 2.
As a result of changes in the I2C protocol, several I2C
addresses are reserved and will not be Acknowledged
in Slave mode.
TABLE 16-2:
2
RESERVED I C™ ADDRESSES
Slave Address
Note 1:
2:
3:
Address masking does not affect behavior. Refer to
Table 16-2 for a summary of these reserved addresses.
.
(1)
R/W Bit
Description
Address(2)
0000 000
0
General Call
0000 000
1
Start Byte
0000 001
x
CBUS Address
0000 010
x
Reserved
0000 011
x
Reserved
0000 1xx
x
HS Mode Master Code
1111 1xx
x
Reserved
1111 0xx
x
10-Bit Slave Upper Byte(3)
The above address bits will not cause an address match, independent of address mask settings.
The address will be Acknowledged only if GCEN = 1.
A match on this address can only occur on the upper byte in 10-Bit Addressing mode.
 2005-2012 Microchip Technology Inc.
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REGISTER 16-1:
I2CxCON: I2Cx CONTROL REGISTER
R/W-0
U-0
R/W-0
R/W-1, HC
R/W-0
R/W-0
R/W-0
R/W-0
I2CEN
—
I2CSIDL
SCLREL
IPMIEN
A10M
DISSLW
SMEN
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0, HC
R/W-0, HC
R/W-0, HC
R/W-0, HC
R/W-0, HC
GCEN
STREN
ACKDT
ACKEN
RCEN
PEN
RSEN
SEN
bit 7
bit 0
Legend:
HC = Hardware Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
I2CEN: I2Cx Enable bit
1 = Enables the I2Cx module and configures the SDAx and SCLx pins as serial port pins
0 = Disables I2Cx module; all I2C™ pins are controlled by port functions
bit 14
Unimplemented: Read as ‘0’
bit 13
I2CSIDL: Stop in Idle Mode bit
1 = Discontinues module operation when the device enters an Idle mode
0 = Continues module operation in Idle mode
bit 12
SCLREL: SCLx Release Control bit (when operating as an I2C™ slave)
1 = Releases SCLx clock
0 = Holds SCLx clock low (clock stretch)
If STREN = 1:
Bit is R/W (i.e., software may write ‘0’ to initiate stretch and write ‘1’ to release clock). Hardware is clear
at the beginning of slave transmission. Hardware is clear at the end of slave reception.
If STREN = 0:
Bit is R/S (i.e., software may only write ‘1’ to release clock). Hardware is clear at the beginning of slave
transmission.
bit 11
IPMIEN: Intelligent Peripheral Management Interface (IPMI) Enable bit
1 = IPMI Support mode is enabled; all addresses are Acknowledged
0 = IPMI mode is disabled
bit 10
A10M: 10-Bit Slave Address bit
1 = I2CxADD is a 10-bit slave address
0 = I2CxADD is a 7-bit slave address
bit 9
DISSLW: Disable Slew Rate Control bit
1 = Slew rate control is disabled
0 = Slew rate control is enabled
bit 8
SMEN: SMBus Input Levels bit
1 = Enables I/O pin thresholds compliant with the SMBus specification
0 = Disables SMBus input thresholds
bit 7
GCEN: General Call Enable bit (when operating as an I2C slave)
1 = Enables interrupt when a general call address is received in the I2CxRSR (module is enabled for
reception)
0 = General call address is disabled
bit 6
STREN: SCLx Clock Stretch Enable bit (when operating as an I2C slave)
Used in conjunction with the SCLREL bit.
1 = Enables software or receives clock stretching
0 = Disables software or receives clock stretching
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REGISTER 16-1:
I2CxCON: I2Cx CONTROL REGISTER (CONTINUED)
bit 5
ACKDT: Acknowledge Data bit (When operating as an I2C master; applicable during master receive.)
Value that will be transmitted when the software initiates an Acknowledge sequence.
1 = Sends NACK during Acknowledge
0 = Sends ACK during Acknowledge
bit 4
ACKEN: Acknowledge Sequence Enable bit
(When operating as an I2C master; applicable during master receive.)
1 = Initiates Acknowledge sequence on SDAx and SCLx pins and transmits the ACKDT data bit.
Hardware is clear at the end of the master Acknowledge sequence.
0 = Acknowledge sequence is not in progress
bit 3
RCEN: Receive Enable bit (when operating as an I2C master)
1 = Enables Receive mode for I2C. Hardware is clear at the end of the eighth bit of the master receive
data byte.
0 = Receive sequence is not in progress
bit 2
PEN: Stop Condition Enable bit (when operating as an I2C master)
1 = Initiates Stop condition on SDAx and SCLx pins. Hardware is clear at the end of the master Stop
sequence.
0 = Stop condition is not in progress
bit 1
RSEN: Repeated Start Condition Enable bit (when operating as an I2C master)
1 = Initiates Repeated Start condition on SDAx and SCLx pins. Hardware is clear at the end of the
master Repeated Start sequence.
0 = Repeated Start condition is not in progress
bit 0
SEN: Start Condition Enable bit (when operating as an I2C master)
1 = Initiates Start condition on SDAx and SCLx pins. Hardware is clear at the end of the master Start
sequence.
0 = Start condition is not in progress
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REGISTER 16-2:
I2CxSTAT: I2Cx STATUS REGISTER
R-0, HSC
R-0, HSC
U-0
U-0
U-0
R/C-0, HSC
R-0, HSC
R-0, HSC
ACKSTAT
TRSTAT
—
—
—
BCL
GCSTAT
ADD10
bit 15
bit 8
R/C-0, HSC
R/C-0, HSC
R-0, HSC
IWCOL
I2COV
D/A
R/C-0, HSC R/C-0, HSC
P
S
R-0, HSC
R-0, HSC
R-0, HSC
R/W
RBF
TBF
bit 7
bit 0
HS = Hardware Settable bit
Legend:
U = Unimplemented bit, read as ‘0’
R = Readable bit
W = Writable bit
HSC = Hardware Settable/Clearable bit
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
C = Clearable bit
x = Bit is unknown
bit 15
ACKSTAT: Acknowledge Status bit
1 = NACK is received from slave
0 = ACK is received from slave
Hardware is set or clear at the end of slave Acknowledge.
bit 14
TRSTAT: Transmit Status bit (When operating as I2C master; applicable to master transmit operation.)
1 = Master transmit is in progress (8 bits + ACK)
0 = Master transmit is not in progress
Hardware is set at the beginning of master transmission. Hardware is clear at the end of slave Acknowledge.
bit 13-11
Unimplemented: Read as ‘0’
bit 10
BCL: Master Bus Collision Detect bit
1 = A bus collision has been detected during master operation
0 = No collision
Hardware is set at the detection of a bus collision.
bit 9
GCSTAT: General Call Status bit
1 = General call address was received
0 = General call address was not received
Hardware is set when an address matches a general call address. Hardware is clear at Stop detection.
bit 8
ADD10: 10-Bit Address Status bit
1 = 10-bit address was matched
0 = 10-bit address was not matched
Hardware is set at a match of the 2nd byte of a matched 10-bit address. Hardware is clear at Stop detection.
bit 7
IWCOL: Write Collision Detect bit
1 = An attempt to write the I2CxTRN register failed because the I2C module is busy
0 = No collision
Hardware is set at an occurrence of a write to I2CxTRN while busy (cleared by software).
bit 6
I2COV: Receive Overflow Flag bit
1 = A byte was received while the I2CxRCV register is still holding the previous byte
0 = No overflow
Hardware is set at an attempt to transfer I2CxRSR to I2CxRCV (cleared by software).
bit 5
D/A: Data/Address bit (when operating as I2C slave)
1 = Indicates that the last byte received was data
0 = Indicates that the last byte received was device address
Hardware is clear at a device address match. Hardware is set after a transmission finishes or by
reception of a slave byte.
bit 4
P: Stop bit
1 = Indicates that a Stop bit has been detected last
0 = Stop bit was not detected last
Hardware is set or clear when a Start, Repeated Start or Stop is detected.
DS39747F-page 142
 2005-2012 Microchip Technology Inc.
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REGISTER 16-2:
I2CxSTAT: I2Cx STATUS REGISTER (CONTINUED)
bit 3
S: Start bit
1 = Indicates that a Start (or Repeated Start) bit has been detected last
0 = Start bit was not detected last
Hardware is set or clear when Start, Repeated Start or Stop is detected.
bit 2
R/W: Read/Write bit Information (when operating as I2C slave)
1 = Read – indicates data transfer is output from slave
0 = Write – indicates data transfer is input to slave
Hardware is set or clear after reception of an I 2C device address byte.
bit 1
RBF: Receive Buffer Full Status bit
1 = Receive is complete, I2CxRCV is full
0 = Receive is not complete, I2CxRCV is empty
Hardware is set when I2CxRCV is written with the received byte. Hardware is clear when the software reads
I2CxRCV.
bit 0
TBF: Transmit Buffer Full Status bit
1 = Transmit is in progress, I2CxTRN is full
0 = Transmit is complete, I2CxTRN is empty
Hardware is set when the software writes to I2CxTRN. Hardware is clear at the completion of
data transmission.
 2005-2012 Microchip Technology Inc.
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REGISTER 16-3:
I2CxMSK: I2Cx SLAVE MODE ADDRESS MASK REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
—
—
—
—
—
—
AMSK9
AMSK8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
AMSK7
AMSK6
AMSK5
AMSK4
AMSK3
AMSK2
AMSK1
AMSK0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-10
Unimplemented: Read as ‘0’
bit 9-0
AMSK<9:0>: Mask for Address Bit x Select bits
1 = Enables masking for bit x of incoming message address; bit match is not required in this position
0 = Disables masking for bit x; bit match is required in this position
DS39747F-page 144
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17.0
Note:
UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART)
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 21. “UART”
(DS39708) in the “PIC24F Family
Reference Manual” for more information.
The Universal Asynchronous Receiver Transmitter
(UART) module is one of the serial I/O modules available
in the PIC24F device family. The UARTx is a full-duplex,
asynchronous system that can communicate with
peripheral devices, such as personal computers,
LIN/J2602, RS-232 and RS-485 interfaces. The
module also supports a hardware flow control option
with the UxCTS and UxRTS pins, and also includes an
IrDA® encoder and decoder.
The primary features of the UARTx module are:
• Full-Duplex, 8 or 9-Bit Data Transmission
Through the UxTX and UxRX Pins
• Even, Odd or No Parity Options (for 8-bit data)
• One or Two Stop bits
• Hardware Flow Control Option with UxCTS and
UxRTS Pins
FIGURE 17-1:
• Fully Integrated Baud Rate Generator with 16-Bit
Prescaler
• Baud Rates Ranging from 1 Mbps to 15 bps at
16 MIPS
• 4-Deep First-In-First-Out (FIFO) Transmit Data
Buffer
• 4-Deep FIFO Receive Data Buffer
• Parity, Framing and Buffer Overrun Error Detection
• Support for 9-bit mode with Address Detect
(9th bit = 1)
• Transmit and Receive Interrupts
• Loopback mode for Diagnostic Support
• Support for Sync and Break Characters
• Supports Automatic Baud Rate Detection
• IrDA Encoder and Decoder Logic
• 16x Baud Clock Output for IrDA Support
A simplified block diagram of the UARTx is shown in
Figure 17-1. The UARTx module consists of these key
important hardware elements:
• Baud Rate Generator
• Asynchronous Transmitter
• Asynchronous Receiver
UARTx SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA®
BCLKx
Hardware Flow Control
UxRTS
UxCTS
UARTx Receiver
UxRX
UARTx Transmitter
UxTX
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17.1
UARTx Baud Rate Generator
(BRG)
The UARTx module includes a dedicated, 16-bit Baud
Rate Generator. The UBRGx register controls the
period of a free-running, 16-bit timer. Equation 17-1
shows the formula for computation of the baud rate
with BRGH = 0.
EQUATION 17-1:
Note 1:
FCY
16 • (UBRGx + 1)
UBRGx =
FCY
–1
16 • Baud Rate
Based on FCY = FOSC/2; Doze mode
and PLL are disabled.
Example 17-1 shows the calculation of the baud rate
error for the following conditions:
• FCY = 4 MHz
• Desired Baud Rate = 9600
Desired Baud Rate
Equation 17-2 shows the formula for computation of
the baud rate with BRGH = 1.
EQUATION 17-2:
UARTx BAUD RATE WITH
BRGH = 0(1)
Baud Rate =
EXAMPLE 17-1:
The maximum baud rate (BRGH = 0) possible is
FCY/16 (for UBRGx = 0) and the minimum baud rate
possible is FCY/(16 * 65536).
Note 1:
UARTx BAUD RATE WITH
BRGH = 1(1)
Baud Rate =
FCY
4 • (UBRGx + 1)
UBRGx =
FCY
4 • Baud Rate
–1
Based on FCY = FOSC/2; Doze mode
and PLL are disabled.
The maximum baud rate (BRGH = 1) possible is FCY/4
(for UBRGx = 0) and the minimum baud rate possible
is FCY/(4 * 65536).
Writing a new value to the UBRGx register causes the
BRG timer to be reset (cleared). This ensures the BRG
does not wait for a timer overflow before generating the
new baud rate.
BAUD RATE ERROR CALCULATION (BRGH = 0)(1)
= FCY/(16 (UBRGx + 1))
Solving for UBRGx value:
BRGx
BRGx
BRGx
= ((FCY/Desired Baud Rate)/16) – 1
= ((4000000/9600)/16) – 1
= 25
Calculated Baud Rate = 4000000/(16 (25 + 1))
= 9615
Error
= (Calculated Baud Rate – Desired Baud Rate)
Desired Baud Rate
= (9615 – 9600)/9600
= 0.16%
Note 1: Based on FCY = FOSC/2; Doze mode and PLL are disabled.
DS39747F-page 146
 2005-2012 Microchip Technology Inc.
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17.2
1.
2.
3.
4.
5.
6.
Set up the UARTx:
a) Write appropriate values for data, parity and
Stop bits.
b) Write appropriate baud rate value to the
UBRGx register.
c) Set up transmit and receive interrupt enable
and priority bits.
Enable the UARTx.
Set the UTXEN bit (causes a transmit interrupt).
Write data byte to lower byte of UTXxREG word.
The value will be immediately transferred to the
Transmit Shift Register (TSR) and the serial bit
stream will start shifting out with the next rising
edge of the baud clock.
Alternately, the data byte may be transferred
while UTXEN = 0 and then the user may set
UTXEN. This will cause the serial bit stream to
begin immediately because the baud clock will
start from a cleared state.
A transmit interrupt will be generated as per
interrupt control bit, UTXISELx.
17.3
1.
2.
3.
4.
5.
6.
Transmitting in 8-Bit Data Mode
Transmitting in 9-Bit Data Mode
Set up the UARTx (as described in Section 17.2
“Transmitting in 8-Bit Data Mode”).
Enable the UARTx.
Set the UTXEN bit (causes a transmit interrupt).
Write UxTXREG as a 16-bit value only.
A word write to UxTXREG triggers the transfer
of the 9-bit data to the TSR. Serial bit stream will
start shifting out with the first rising edge of the
baud clock.
A transmit interrupt will be generated as per the
setting of control bit, UTXISELx.
17.4
Break and Sync Transmit
Sequence
The following sequence will send a message frame
header, made up of a Break, followed by an auto-baud
Sync byte.
1.
2.
3.
4.
5.
Configure the UARTx for the desired mode.
Set UTXEN and UTXBRK – sets up the Break
character,
Load the UxTXREG with a dummy character to
initiate transmission (value is ignored).
Write ‘55h’ to UxTXREG – loads the Sync
character into the transmit FIFO.
After the Break has been sent, the UTXBRK bit
is reset by hardware. The Sync character now
transmits.
 2005-2012 Microchip Technology Inc.
17.5
1.
2.
3.
4.
5.
Receiving in 8-Bit or 9-Bit Data
Mode
Set up the UARTx (as described in Section 17.2
“Transmitting in 8-Bit Data Mode”).
Enable the UARTx.
A receive interrupt will be generated when one
or more data characters have been received, as
per interrupt control bit, URXISELx.
Read the OERR bit to determine if an overrun
error has occurred. The OERR bit must be reset
in software.
Read UxRXREG.
The act of reading the UxRXREG character will move
the next character to the top of the receive FIFO,
including a new set of PERR and FERR values.
17.6
Operation of UxCTS and UxRTS
Control Pins
UARTx Clear-to-Send (UxCTS) and Request-to-Send
(UxRTS) are the two hardware controlled pins that are
associated with the UARTx modules. These two pins
allow the UARTx to operate in Simplex and Flow Control mode. They are implemented to control the
transmission and reception between the Data Terminal
Equipment (DTE). The UEN<1:0> bits in the UxMODE
register configure these pins.
17.7
Infrared Support
The UARTx module provides two types of infrared
UARTx support: one is the IrDA clock output to support
the external IrDA encoder and decoder device (legacy
module support), and the other is the full implementation
of the IrDA encoder and decoder.
17.8
External IrDA Support – IrDA
Clock Output
To support the external IrDA encoder and decoder
devices, the BCLKx pin (same as the UxRTS pin) can
be configured to generate the 16x baud clock. With
UEN<1:0> = 11, the BCLKx pin will output the
16x baud clock if the UARTx module is enabled. It can
be used to support the IrDA codec chip.
17.9
Built-in IrDA Encoder and Decoder
The UARTx has full implementation of the IrDA
encoder and decoder as part of the UARTx module.
The built-in IrDA encoder and decoder functionality is
enabled using the IREN bit UxMODE<12>. When
enabled (IREN = 1), the receive pin (UxRX) acts as the
input from the infrared receiver. The transmit pin
(UxTX) acts as the output to the infrared transmitter.
DS39747F-page 147
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REGISTER 17-1:
UxMODE: UARTx MODE REGISTER
R/W-0
U-0
R/W-0
R/W-0
R/W-0
U-0
R/W-0
R/W-0
UARTEN
—
USIDL
IREN(1)
RTSMD
—
UEN1
UEN0
bit 15
bit 8
R/W-0, HC
R/W-0
R/W-0, HC
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
WAKE
LPBACK
ABAUD
RXINV
BRGH
PDSEL1
PDSEL0
STSEL
bit 7
bit 0
Legend:
HC = Hardware Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
UARTEN: UARTx Enable bit
1 = UARTx is enabled; all UARTx pins are controlled by UARTx as defined by UEN<1:0>
0 = UARTx is disabled; all UARTx pins are controlled by PORT latches; UARTx power consumption is minimal
bit 14
Unimplemented: Read as ‘0’
bit 13
USIDL: Stop in Idle Mode bit
1 = Discontinues module operation when the device enters Idle mode
0 = Continues module operation in Idle mode
bit 12
IREN: IrDA® Encoder and Decoder Enable bit(1)
1 = IrDA encoder and decoder are enabled
0 = IrDA encoder and decoder are disabled
bit 11
RTSMD: Mode Selection for UxRTS Pin bit
1 = UxRTS pin is in Simplex mode
0 = UxRTS pin is in Flow Control mode
bit 10
Unimplemented: Read as ‘0’
bit 9-8
UEN<1:0>: UARTx Enable bits
11 = UxTX, UxRX and BCLKx pins are enabled and used; the UxCTS pin is controlled by PORT latches
10 = UxTX, UxRX, UxCTS and UxRTS pins are enabled and used
01 = UxTX, UxRX and UxRTS pins are enabled and used; the UxCTS pin is controlled by PORT latches
00 = UxTX and UxRX pins are enabled and used; UxCTS and UxRTS/BCLKx pins are controlled by PORT
latches
bit 7
WAKE: Wake-up on Start bit Detect During Sleep Mode Enable bit
1 = UARTx will continue to sample the UxRX pin; interrupt is generated on the falling edge, bit cleared in
hardware on the following rising edge
0 = No wake-up is enabled
bit 6
LPBACK: UARTx Loopback Mode Select bit
1 = Enables Loopback mode
0 = Loopback mode is disabled
bit 5
ABAUD: Auto-Baud Enable bit
1 = Enables baud rate measurement on the next character – requires reception of a Sync field (55h);
cleared in hardware upon completion
0 = Baud rate measurement is disabled or completed
bit 4
RXINV: Receive Polarity Inversion bit
1 = UxRX Idle state is ‘0’
0 = UxRX Idle state is ‘1’
Note 1:
This feature is only available for the 16x BRG mode (BRGH = 0).
DS39747F-page 148
 2005-2012 Microchip Technology Inc.
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REGISTER 17-1:
UxMODE: UARTx MODE REGISTER (CONTINUED)
bit 3
BRGH: High Baud Rate Enable bit
1 = BRG generates 4 clocks per bit period (4x Baud Clock, High-Speed mode)
0 = BRG generates 16 clocks per bit period (16x Baud Clock, Standard mode)
bit 2-1
PDSEL<1:0>: Parity and Data Selection bits
11 = 9-bit data, no parity
10 = 8-bit data, odd parity
01 = 8-bit data, even parity
00 = 8-bit data, no parity
bit 0
STSEL: Stop Bit Selection bit
1 = Two Stop bits
0 = One Stop bit
Note 1:
This feature is only available for the 16x BRG mode (BRGH = 0).
 2005-2012 Microchip Technology Inc.
DS39747F-page 149
PIC24FJ128GA010 FAMILY
REGISTER 17-2:
UxSTA: UARTx STATUS AND CONTROL REGISTER
R/W-0
R/W-0
R/W-0
U-0
R/W-0, HC
R/W-0
R-0
R-1
UTXISEL1
TXINV
UTXISEL0
—
UTXBRK
UTXEN
UTXBF
TRMT
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R-1
R-0
R-0
R/C-0
R-0
URXISEL1
URXISEL0
ADDEN
RIDLE
PERR
FERR
OERR
URXDA
bit 7
bit 0
Legend:
C = Clearable bit
HC = Hardware Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15,13
UTXISEL<1:0>: Transmission Interrupt Mode Selection bits
11 = Reserved; do not use
10 = Interrupt when a character is transferred to the Transmit Shift Register and as a result, the transmit
buffer becomes empty
01 = Interrupt when the last character is shifted out of the Transmit Shift Register; all transmit operations
are completed
00 = Interrupt when a character is transferred to the Transmit Shift Register (this implies there is at least
one character open in the transmit buffer)
bit 14
TXINV: Transmit Polarity Inversion bit
IREN = 0:
1 = TX Idle state is ‘0’
0 = TX Idle state is ‘1’
IREN = 1:
1 = IrDA® encoded TX Idle state is ‘1’
0 = IrDA encoded TX Idle state is ‘0’
bit 12
Unimplemented: Read as ‘0’
bit 11
UTXBRK: Transmit Break bit
1 = Sends Sync Break on next transmission – Start bit, followed by twelve ‘0’ bits, followed by Stop bit;
cleared by hardware upon completion
0 = Sync Break transmission is disabled or completed
bit 10
UTXEN: Transmit Enable bit
1 = Transmit is enabled, UxTX pin controlled by UARTx
0 = Transmit is disabled, any pending transmission is aborted and the buffer is reset. UxTX pin is controlled
by the PORT.
bit 9
UTXBF: Transmit Buffer Full Status bit (read-only)
1 = Transmit buffer is full
0 = Transmit buffer is not full, at least one more character can be written
bit 8
TRMT: Transmit Shift Register Empty bit (read-only)
1 = Transmit Shift Register is empty and transmit buffer is empty (the last transmission has completed)
0 = Transmit Shift Register is not empty, a transmission is in progress or queued
bit 7-6
URXISEL<1:0>: Receive Interrupt Mode Selection bits
11 = Interrupt is set on RSR transfer, making the receive buffer full (i.e., has 4 data characters)
10 = Interrupt is set on RSR transfer, making the receive buffer 3/4 full (i.e., has 3 data characters)
0x = Interrupt is set when any character is received and transferred from the RSR to the receive buffer;
receive buffer has one or more characters
bit 5
ADDEN: Address Character Detect bit (bit 8 of received data = 1)
1 = Address Detect mode is enabled. If 9-bit mode is not selected, this does not take effect.
0 = Address Detect mode is disabled
DS39747F-page 150
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 17-2:
UxSTA: UARTx STATUS AND CONTROL REGISTER (CONTINUED)
bit 4
RIDLE: Receiver Idle bit (read-only)
1 = Receiver is Idle
0 = Receiver is active
bit 3
PERR: Parity Error Status bit (read-only)
1 = Parity error has been detected for the current character (character at the top of the receive FIFO)
0 = Parity error has not been detected
bit 2
FERR: Framing Error Status bit (read-only)
1 = Framing error has been detected for the current character (character at the top of the receive FIFO)
0 = Framing error has not been detected
bit 1
OERR: Receive Buffer Overrun Error Status bit (clear/read-only)
1 = Receive buffer has overflowed
0 = Receive buffer has not overflowed (clearing a previously set OERR bit (1  0 transition) will reset
the receiver buffer and the RSR to the empty state)
bit 0
URXDA: Receive Buffer Data Available bit (read-only)
1 = Receive buffer has data, at least one more character can be read
0 = Receive buffer is empty
 2005-2012 Microchip Technology Inc.
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PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 152
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
18.0
Note:
PARALLEL MASTER PORT
(PMP)
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 13. “Parallel
Master Port (PMP)” (DS39713) in the
“PIC24F Family Reference Manual” for
more information.
The Parallel Master Port (PMP) module is a parallel,
8-bit I/O module, specifically designed to communicate
with a wide variety of parallel devices, such as communication peripherals, LCDs, external memory devices
and microcontrollers. Because the interface to parallel
peripherals varies significantly, the PMP is highly
configurable.
FIGURE 18-1:
Key features of the PMP module include:
• Up to 16 Programmable Address Lines
• Up to Two Chip Select Lines
• Programmable Strobe Options
- Individual Read and Write Strobes or;
- Read/Write Strobe with Enable Strobe
• Address Auto-Increment/Auto-Decrement
• Programmable Address/Data Multiplexing
• Programmable Polarity on Control Signals
• Legacy Parallel Slave Port Support
• Enhanced Parallel Slave Support
- Address Support
- 4-Byte Deep Auto-Incrementing Buffer
• Programmable Wait States
• Selectable Input Voltage Levels
PMP MODULE OVERVIEW
Address Bus
Data Bus
Control Lines
PIC24F
Parallel Master Port
PMA<0>
PMALL
PMA<1>
PMALH
Up to 16-Bit Address
EEPROM
PMA<13:2>
PMA<14>
PMCS1
PMA<15>
PMCS2
PMBE
PMRD
PMRD/PMWR
Microcontroller
LCD
FIFO
Buffer
PMWR
PMENB
PMD<7:0>
PMA<7:0>
PMA<15:8>
 2005-2012 Microchip Technology Inc.
8-Bit Data
DS39747F-page 153
PIC24FJ128GA010 FAMILY
REGISTER 18-1:
PMCON: PARALLEL PORT CONTROL REGISTER
R/W-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PMPEN
—
PSIDL
ADRMUX1
ADRMUX0
PTBEEN
PTWREN
PTRDEN
bit 15
bit 8
R/W-0
R/W-0
R/W-0(1)
R/W-0(1)
R/W-0(1)
R/W-0
R/W-0
R/W-0
CSF1
CSF0
ALP
CS2P
CS1P
BEP
WRSP
RDSP
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
PMPEN: Parallel Master Port Enable bit
1 = PMP is enabled
0 = PMP is disabled, no off-chip access is performed
bit 14
Unimplemented: Read as ‘0’
bit 13
PSIDL: Stop in Idle Mode bit
1 = Discontinues module operation when device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-11
ADRMUX<1:0>: Address/Data Multiplexing Selection bits
11 = Reserved
10 = All 16 bits of address are multiplexed on PMD<7:0> pins
01 = Lower 8 bits of address are multiplexed on PMD<7:0> pins, upper 8 bits are on PMA<15:8>
00 = Address and data appear on separate pins
bit 10
PTBEEN: Byte Enable Port Enable bit (16-Bit Master mode)
1 = PMBE port is enabled
0 = PMBE port is disabled
bit 9
PTWREN: Write Enable Strobe Port Enable bit
1 = PMWR/PMENB port is enabled
0 = PMWR/PMENB port is disabled
bit 8
PTRDEN: Read/Write Strobe Port Enable bit
1 = PMRD/PMWR port is enabled
0 = PMRD/PMWR port is disabled
bit 7-6
CSF<1:0>: Chip Select Function bits
11 = Reserved
10 = PMCS1 and PMCS2 function as chip select
01 = PMCS2 functions as chip select, PMCS1 functions as Address Bit 14
00 = PMCS1 and PMCS2 function as Address Bits 15 and 14
bit 5
ALP: Address Latch Polarity bit(1)
1 = Active-high (PMALL and PMALH)
0 = Active-low (PMALL and PMALH)
bit 4
CS2P: Chip Select 2 Polarity bit(1)
1 = Active-high (PMCS2)
0 = Active-low (PMCS2)
bit 3
CS1P: Chip Select 1 Polarity bit(1)
1 = Active-high (PMCS1/PMCS)
0 = Active-low (PMCS1/PMCS)
Note 1:
These bits have no effect when their corresponding pins are used as address lines.
DS39747F-page 154
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 18-1:
PMCON: PARALLEL PORT CONTROL REGISTER (CONTINUED)
bit 2
BEP: Byte Enable Polarity bit
1 = Byte enable is active-high (PMBE)
0 = Byte enable is active-low (PMBE)
bit 1
WRSP: Write Strobe Polarity bit
For Slave modes and Master mode 2 (PMMODE<9:8> = 00,01,10):
1 = Write strobe is active-high (PMWR)
0 = Write strobe is active-low (PMWR)
For Master mode 1 (PMMODE<9:8> = 11):
1 = Enable strobe is active-high (PMENB)
0 = Enable strobe is active-low (PMENB)
bit 0
RDSP: Read Strobe Polarity bit
For Slave modes and Master mode 2 (PMMODE<9:8> = 00,01,10):
1 = Read strobe is active-high (PMRD)
0 = Read strobe is active-low (PMRD)
For Master mode 1 (PMMODE<9:8> = 11):
1 = Read/write strobe is active-high (PMRD/PMWR)
0 = Read/write strobe is active-low (PMRD/PMWR)
Note 1:
These bits have no effect when their corresponding pins are used as address lines.
 2005-2012 Microchip Technology Inc.
DS39747F-page 155
PIC24FJ128GA010 FAMILY
REGISTER 18-2:
PMMODE: PARALLEL PORT MODE REGISTER
R-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
BUSY
IRQM1
IRQM0
INCM1
INCM0
MODE16
MODE1
MODE0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
WAITB1(1)
WAITB0(1)
WAITM3
WAITM2
WAITM1
WAITM0
WAITE1(1)
WAITE0(1)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
BUSY: Busy bit (Master mode only)
1 = Port is busy (not useful when the processor stall is active)
0 = Port is not busy
bit 14-13
IRQM<1:0>: Interrupt Request Mode bits
11 = Interrupt generated when Read Buffer 3 is read or Write Buffer 3 is written (Buffered PSP mode), or
on a read or write operation when PMA<1:0> = 11 (Addressable PSP mode only)
10 = No interrupt is generated, processor stall activated
01 = Interrupt is generated at the end of the read/write cycle
00 = No interrupt is generated
bit 12-11
INCM<1:0>: Increment Mode bits
11 = PSP read and write buffers auto-increment (Legacy PSP mode only)
10 = Decrements ADDR<15,13:0> by 1 every read/write cycle
01 = Increments ADDR<15,13:0> by 1 every read/write cycle
00 = No increment or decrement of the address
bit 10
MODE16: 8/16-Bit Mode bit
1 = 16-bit mode: Data register is 16 bits, a read or write to the Data register invokes two 8-bit transfers
0 = 8-bit mode: Data register is 8 bits, a read or write to the Data register invokes one 8-bit transfer
bit 9-8
MODE<1:0>: Parallel Port Mode Select bits
11 = Master mode 1 (PMCSx, PMRD/PMWR, PMENB, PMBE, PMA<x:0> and PMD<7:0>)
10 = Master mode 2 (PMCSx, PMRD, PMWR, PMBE, PMA<x:0> and PMD<7:0>)
01 = Enhanced PSP, control signals (PMRD, PMWR, PMCS, PMD<7:0> and PMA<1:0>)
00 = Legacy Parallel Slave Port, control signals (PMRD, PMWR, PMCS and PMD<7:0>)
bit 7-6
WAITB<1:0>: Data Setup to Read/Write Wait State Configuration bits(1)
11 = Data Wait of 4 TCY; multiplexed address phase of 4 TCY
10 = Data Wait of 3 TCY; multiplexed address phase of 3 TCY
01 = Data Wait of 2 TCY; multiplexed address phase of 2 TCY
00 = Data Wait of 1 TCY; multiplexed address phase of 1 TCY
bit 5-2
WAITM<3:0>: Read to Byte Enable Strobe Wait State Configuration bits
1111 = Wait of additional 15 TCY
...
0001 = Wait of additional 1 TCY
0000 = No additional Wait cycles (operation forced into one TCY)
bit 1-0
WAITE<1:0>: Data Hold After Strobe Wait State Configuration bits(1)
11 = Wait of 4 TCY
10 = Wait of 3 TCY
01 = Wait of 2 TCY
00 = Wait of 1 TCY
Note 1:
WAITB and WAITE bits are ignored whenever WAITM<3:0> = 0000.
DS39747F-page 156
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 18-3:
PMADDR: PARALLEL PORT ADDRESS REGISTER(1)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CS2
CS1
ADDR13
ADDR12
ADDR11
ADDR10
ADDR9
ADDR8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADDR7
ADDR6
ADDR5
ADDR4
ADDR3
ADDR2
ADDR1
ADDR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
CS2: Chip Select 2 bit
1 = Chip Select 2 is active
0 = Chip Select 2 is inactive (pin functions as PMA<15>)
bit 14
CS1: Chip Select 1 bit
1 = Chip Select 1 is active
0 = Chip Select 1 is inactive (pin functions as PMA<14>)
bit 13-0
ADDR<13:0>: Parallel Port Destination Address bits
Note 1:
x = Bit is unknown
PMADDR and PMDOUT1 share the same physical register. The register functions as PMDOUT1 only in
Slave modes and as PMADDR only in Master modes.
REGISTER 18-4:
PMAEN: PARALLEL PORT ENABLE REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PTEN15
PTEN14
PTEN13
PTEN12
PTEN11
PTEN10
PTEN9
PTEN8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PTEN7
PTEN6
PTEN5
PTEN4
PTEN3
PTEN2
PTEN1
PTEN0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
PTEN<15:14>: PMCSx Strobe Enable bits
1 = PMA15 and PMA14 function as either PMA<15:14> or PMCS2 and PMCS1
0 = PMA15 and PMA14 function as port I/O
bit 13-2
PTEN<13:2>: PMP Address Port Enable bits
1 = PMA<13:2> function as PMP address lines
0 = PMA<13:2> function as port I/O
bit 1-0
PTEN<1:0>: PMALH/PMALL Strobe Enable bits
1 = PMA1 and PMA0 function as either PMA<1:0> or PMALH and PMALL
0 = PMA1 and PMA0 pads function as port I/O
 2005-2012 Microchip Technology Inc.
DS39747F-page 157
PIC24FJ128GA010 FAMILY
REGISTER 18-5:
PMSTAT: PARALLEL PORT STATUS REGISTER
R-0
R/W-0, HS
U-0
U-0
R-0
R-0
R-0
R-0
IBF
IBOV
—
—
IB3F
IB2F
IB1F
IB0F
bit 15
bit 8
R-1
R/W-0, HS
U-0
U-0
R-1
R-1
R-1
R-1
OBE
OBUF
—
—
OB3E
OB2E
OB1E
OB0E
bit 7
bit 0
Legend:
HS = Hardware Settable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
IBF: Input Buffer Full Status bit
1 = All writable Input Buffer registers are full
0 = Some or all of the writable Input Buffer registers are empty
bit 14
IBOV: Input Buffer Overflow Status bit
1 = A write attempt to a full Input Byte register occurred (must be cleared in software)
0 = No overflow occurred
bit 13-12
Unimplemented: Read as ‘0’
bit 11-8
IB3F:IB0F: Input Buffer n Status Full bit
1 = Input buffer contains data that has not been read (reading the buffer will clear this bit)
0 = Input buffer does not contain any unread data
bit 7
OBE: Output Buffer Empty Status bit
1 = All readable Output Buffer registers are empty
0 = Some or all of the readable Output Buffer registers are full
bit 6
OBUF: Output Buffer Underflow Status bit
1 = A read occurred from an empty Output Byte register (must be cleared in software)
0 = No underflow occurred
bit 5-4
Unimplemented: Read as ‘0’
bit 3-0
OB3E:OB0E: Output Buffer n Status Empty bit
1 = Output buffer is empty (writing data to the buffer will clear this bit)
0 = Output buffer contains data that has not been transmitted
DS39747F-page 158
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 18-6:
PADCFG1: PAD CONFIGURATION CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
—
—
—
—
—
—
RTSECSEL(1)
PMPTTL(2)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-2
Unimplemented: Read as ‘0’
bit 1
RTSECSEL: RTCC Seconds Clock Output Select bit(1)
1 = RTCC Seconds Clock is selected for the RTCC pin
0 = RTCC Alarm Pulse is selected for the RTCC pin
bit 0
PMPTTL: PMP Module TTL Input Buffer Select bit(2)
1 = PMP module uses TTL input buffers
0 = PMP module uses Schmitt input buffers
Note 1:
2:
x = Bit is unknown
To enable the actual RTCC output, the RTCOE (RCFGCAL<10>) bit needs to be set.
Refer to Table 1-2 for affected PMP inputs.
 2005-2012 Microchip Technology Inc.
DS39747F-page 159
PIC24FJ128GA010 FAMILY
FIGURE 18-2:
LEGACY PARALLEL SLAVE PORT EXAMPLE
Master
PIC24F Slave
PMD<7:0>
FIGURE 18-3:
PMD<7:0>
PMCS
PMCS
PMRD
PMRD
PMWR
PMWR
Address Bus
Data Bus
Control Lines
ADDRESSABLE PARALLEL SLAVE PORT EXAMPLE
Master
PIC24F Slave
PMA<1:0>
PMA<1:0>
PMD<7:0>
PMD<7:0>
Write
Address
Decode
Read
Address
Decode
PMDOUT1L (0)
PMDIN1L (0)
PMCS
PMCS
PMDOUT1H (1)
PMDIN1H (1)
PMRD
PMRD
PMDOUT2L (2)
PMDIN2L (2)
PMWR
PMDOUT2H (3)
PMDIN2H (3)
PMWR
Address Bus
Data Bus
Control Lines
TABLE 18-1:
SLAVE MODE ADDRESS RESOLUTION
PMA<1:0>
Output Register (Buffer)
Input Register (Buffer)
00
PMDOUT1<7:0> (0)
PMDIN1<7:0> (0)
01
PMDOUT1<15:8> (1)
PMDIN1<15:8> (1)
10
PMDOUT2<7:0> (2)
PMDIN2<7:0> (2)
11
PMDOUT2<15:8> (3)
PMDIN2<15:8> (3)
FIGURE 18-4:
MASTER MODE, DEMULTIPLEXED ADDRESSING (SEPARATE READ AND
WRITE STROBES, TWO CHIP SELECTS)
PIC24F
PMA<13:0>
PMD<7:0>
PMCS1
PMCS2
Address Bus
DS39747F-page 160
PMRD
Data Bus
PMWR
Control Lines
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
FIGURE 18-5:
MASTER MODE, PARTIALLY MULTIPLEXED ADDRESSING (SEPARATE READ
AND WRITE STROBES, TWO CHIP SELECTS)
PMA<13:8>
PIC24F
PMD<7:0>
PMA<7:0>
PMCS1
PMCS2
Address Bus
PMALL
Multiplexed
Data and
Address Bus
PMRD
Control Lines
PMWR
FIGURE 18-6:
MASTER MODE, FULLY MULTIPLEXED ADDRESSING (SEPARATE READ AND
WRITE STROBES, TWO CHIP SELECTS)
PMD<7:0>
PMA<13:8>
PIC24F
PMCS1
PMCS2
PMALL
PMALH
Multiplexed
Data and
Address Bus
PMRD
Control Lines
PMWR
FIGURE 18-7:
EXAMPLE OF A MULTIPLEXED ADDRESSING APPLICATION
PIC24F
PMD<7:0>
PMALL
373
A<7:0>
D<7:0>
373
PMALH
A<15:8>
A<15:0>
D<7:0>
CE
OE
WR
PMCS1
Address Bus
PMRD
Data Bus
PMWR
Control Lines
FIGURE 18-8:
EXAMPLE OF A PARTIALLY MULTIPLEXED ADDRESSING APPLICATION
PIC24F
PMD<7:0>
373
PMALL
PMA<14:7>
PMCS1
PMRD
PMWR
 2005-2012 Microchip Technology Inc.
A<7:0>
D<7:0>
A<14:8>
A<14:0>
D<7:0>
CE
OE
WR
Address Bus
Data Bus
Control Lines
DS39747F-page 161
PIC24FJ128GA010 FAMILY
FIGURE 18-9:
EXAMPLE OF AN 8-BIT MULTIPLEXED ADDRESS AND DATA APPLICATION
PIC24F
Parallel Peripheral
PMD<7:0>
PMALL
AD<7:0>
ALE
PMCS1
CS
Address Bus
PMRD
RD
Data Bus
PMWR
WR
Control Lines
FIGURE 18-10:
PARALLEL EEPROM EXAMPLE (UP TO 15-BIT ADDRESS, 8-BIT DATA)
PIC24F
PMA<n:0>
Parallel EEPROM
A<n:0>
PMD<7:0>
D<7:0>
PMCS1
CE
PMRD
OE
PMWR
WR
FIGURE 18-11:
Address Bus
Data Bus
Control Lines
PARALLEL EEPROM EXAMPLE (UP TO 15-BIT ADDRESS, 16-BIT DATA)
PIC24F
Parallel EEPROM
PMA<n:0>
A<n:1>
PMD<7:0>
D<7:0>
PMBE
A0
PMCS1
CE
PMRD
OE
PMWR
WR
FIGURE 18-12:
Address Bus
Data Bus
Control Lines
LCD CONTROL EXAMPLE (BYTE MODE OPERATION)
PIC24F
PM<7:0>
PMA0
PMRD/PMWR
PMCS1
LCD Controller
D<7:0>
RS
R/W
E
Address Bus
Data Bus
Control Lines
DS39747F-page 162
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
19.0
Note:
•
•
•
•
•
•
•
•
Calendar: Weekday, Date, Month and Year
Alarm Configurable
Year Range: 2000 to 2099
Leap Year Correction
BCD Format for Compact Firmware
Optimized for Low-Power Operation
User Calibration with Auto-Adjust
Calibration Range: ±2.64 Seconds Error per
Month
• Requirements: External 32.768 kHz Clock Crystal
• Alarm Pulse or Seconds Clock Output on RTCC Pin
REAL-TIME CLOCK AND
CALENDAR (RTCC)
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 29. “Real-Time
Clock and Calendar (RTCC)” (DS39696)
in the “PIC24F Family Reference Manual”
for more information.
The Real-Time Clock and Calendar hardware module
has the following features:
• Time: Hours, Minutes and Seconds
• 24-Hour Format (Military Time)
FIGURE 19-1:
RTCC BLOCK DIAGRAM
RTCC Clock Domain
32.768 kHz Input
from SOSC Oscillator
CPU Clock Domain
RCFGCAL
RTCC Prescalers
ALCFGRPT
YEAR
0.5s
Alarm
Event
MTHDAY
RTCVAL
RTCC Timer
WKDYHR
MINSEC
Comparator
ALMTHDY
Compare Registers
with Masks
ALRMVAL
ALWDHR
ALMINSEC
Repeat Counter
RTCC Interrupt
RTCC Interrupt Logic
Alarm Pulse
RTCC Pin
RTCOE
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19.1
RTCC Module Registers
The RTCC module registers are organized into three
categories:
• RTCC Control Registers
• RTCC Value Registers
• Alarm Value Registers
19.1.1
By writing the ALRMVALH byte, the Alarm Pointer
value, ALRMPTR<1:0>, decrements by one until it
reaches ‘00’. Once it reaches ‘00’, the ALRMMIN and
ALRMSEC value will be accessible through
ALRMVALH and ALRMVALL until the pointer value is
manually changed.
TABLE 19-2:
REGISTER MAPPING
To limit the register interface, the RTCC Timer and
Alarm Time registers are accessed through corresponding register pointers. The RTCC Value register
window (RTCVALH and RTCVALL) uses the RTCPTR
bits (RCFGCAL<9:8>) to select the desired Timer
register pair (see Table 19-1). By writing the RTCVALH
byte, the RTCC Pointer value, RTCPTR<1:0>, decrements by one until it reaches ‘00’. Once it reaches ‘00’,
the MINUTES and SECONDS value will be accessible
through RTCVALH and RTCVALL until the pointer
value is manually changed.
TABLE 19-1:
RTCPTR
<1:0>
RTCVAL REGISTER MAPPING
RTCC Value Register Window
RTCVAL<15:8>
RTCVAL<7:0>
00
MINUTES
SECONDS
01
WEEKDAY
HOURS
10
MONTH
DAY
11
—
YEAR
The Alarm Value register window (ALRMVALH and
ALRMVALL)
uses
the
ALRMPTR
bits
(ALCFGRPT<9:8>) to select the desired Alarm register
pair (see Table 19-2).
EXAMPLE 19-1:
ALRMPTR
<1:0>
ALRMVAL REGISTER
MAPPING
Alarm Value Register Window
ALRMVAL<15:8> ALRMVAL<7:0>
ALRMMIN
00
ALRMSEC
01
ALRMWD
ALRMHR
10
ALRMMNTH
ALRMDAY
11
—
—
Considering that the 16-bit core does not distinguish
between 8-bit and 16-bit read operations, the user must
be aware that when reading either the ALRMVALH or
ALRMVALL bytes it will decrement the ALRMPTR<1:0>
value. The same applies to the RTCVALH or RTCVALL
bytes with the RTCPTR<1:0> being decremented.
Note:
19.1.2
This only applies to read operations and
not write operations.
WRITE LOCK
In order to perform a write to any of the RTCC Timer
registers, the RTCWREN bit (RCFGCAL<13>) must be
set (refer to Example 19-1).
SETTING THE RTCWREN BIT IN MPLAB® C30
asm volatile("disi #13");
asm volatile("push W1");
asm volatile("push W2");
asm volatile("push W3");
asm volatile("MOV #NVMKEY, W1");
//move the address of NVMKEY into W1
asm volatile("MOV #0x55, W2");
asm volatile("MOV #0xAA, W3");
asm volatile("MOV W2, [W1]");
//start 55/AA sequence
NOP();
//There must be an instruction between the two writes ( either a NOP or a MOV to W)
asm volatile("MOV W3, [W1]");
asm volatile("BSET RCFGCAL, #13");
//set the RTCWREN bit
asm volatile("pop W3");
asm volatile("pop W2");
asm volatile("pop W1");
Note:
To avoid accidental writes to the timer, it is recommended that the RTCWREN bit (RCFGCAL<13>) is kept
clear at any other time. For the RTCWREN bit to be set, there is only 1 instruction cycle time window allowed
between the 55h/AA sequence and the setting of RTCWREN; therefore, it is recommended that the code in
Example 19-1 be followed.
DS39747F-page 164
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19.1.3
RTCC CONTROL REGISTERS
RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER(1)
REGISTER 19-1:
R/W-0
RTCEN
U-0
(2)
—
R/W-0
RTCWREN
R-0
RTCSYNC
R-0
(3)
HALFSEC
R/W-0
R/W-0
R/W-0
RTCOE
RTCPTR1
RTCPTR0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CAL7
CAL6
CAL5
CAL4
CAL3
CAL2
CAL1
CAL0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
RTCEN: RTCC Enable bit(2)
1 = RTCC module is enabled
0 = RTCC module is disabled
bit 14
Unimplemented: Read as ‘0’
bit 13
RTCWREN: RTCC Value Registers Write Enable bit
1 = RTCVALH and RTCVALL registers can be written to by the user
0 = RTCVALH and RTCVALL registers are locked out from being written to by the user
bit 12
RTCSYNC: RTCC Value Registers Read Synchronization bit
1 = RTCVALH, RTCVALL and ALCFGRPT registers can change while reading due to a rollover ripple
resulting in an invalid data read. If the register is read twice and results in the same data, the data can
be assumed to be valid.
0 = RTCVALH, RTCVALL or ALCFGRPT registers can be read without concern over a rollover ripple
bit 11
HALFSEC: Half-Second Status bit(3)
1 = Second half period of a second
0 = First half period of a second
bit 10
RTCOE: RTCC Output Enable bit
1 = RTCC output is enabled
0 = RTCC output is disabled
bit 9-8
RTCPTR<1:0>: RTCC Value Register Window Pointer bits
Points to the corresponding RTCC Value registers when reading the RTCVALH and RTCVALL registers;
the RTCPTR<1:0> value decrements on every read or write of RTCVALH until it reaches ‘00’.
RTCVAL<15:8>:
00 = MINUTES
01 = WEEKDAY
10 = MONTH
11 = Reserved
RTCVAL<7:0>:
00 = SECONDS
01 = HOURS
10 = DAY
11 = YEAR
Note 1:
2:
3:
The RCFGCAL Reset value is dependent on the type of Reset.
A write to the RTCEN bit is only allowed when RTCWREN = 1.
This bit is read-only; it is cleared to ‘0’ on a write to the lower half of the MINSEC register.
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RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER(1)
REGISTER 19-1:
bit 7-0
CAL<7:0>: RTC Drift Calibration bits
01111111 = Maximum positive adjustment; adds 508 RTC clock pulses every one minute
...
01111111 = Minimum positive adjustment; adds 4 RTC clock pulses every one minute
00000000 = No adjustment
11111111 = Minimum negative adjustment; subtracts 4 RTC clock pulses every one minute
...
10000000 = Maximum negative adjustment; subtracts 512 RTC clock pulses every one minute
Note 1:
2:
3:
The RCFGCAL Reset value is dependent on the type of Reset.
A write to the RTCEN bit is only allowed when RTCWREN = 1.
This bit is read-only; it is cleared to ‘0’ on a write to the lower half of the MINSEC register.
REGISTER 19-2:
PADCFG1: PAD CONFIGURATION CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
—
—
U-0
—
U-0
—
U-0
—
U-0
R/W-0
R/W-0
—
RTSECSEL(1)
PMPTTL(2)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-2
Unimplemented: Read as ‘0’
bit 1
RTSECSEL: RTCC Seconds Clock Output Select bit(1)
1 = RTCC seconds clock is selected for the RTCC pin
0 = RTCC alarm pulse is selected for the RTCC pin
bit 0
PMPTTL: PMP Module TTL Input Buffer Select bit(2)
1 = PMP module uses TTL input buffers
0 = PMP module uses Schmitt input buffers
Note 1:
2:
x = Bit is unknown
To enable the actual RTCC output, the RTCOE (RCFGCAL<10>) bit needs to be set.
Refer to Table 1-2 for affected PMP inputs.
DS39747F-page 166
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REGISTER 19-3:
ALCFGRPT: ALARM CONFIGURATION REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ALRMEN
CHIME
AMASK3
AMASK2
AMASK1
AMASK0
ALRMPTR1
ALRMPTR0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ARPT7
ARPT6
ARPT5
ARPT4
ARPT3
ARPT2
ARPT1
ARPT0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ALRMEN: Alarm Enable bit
1 = Alarm is enabled (cleared automatically after an alarm event whenever ARPT<7:0> = 00 and
CHIME = 0)
0 = Alarm is disabled
bit 14
CHIME: Chime Enable bit
1 = Chime is enabled; ARPT<7:0> bits are allowed to roll over from 00h to FFh
0 = Chime is disabled; ARPT<7:0> bits stop once they reach 00h
bit 13-10
AMASK<3:0>: Alarm Mask Configuration bits
0000 = Every half second
0001 = Every second
0010 = Every 10 seconds
0011 = Every minute
0100 = Every 10 minutes
0101 = Every hour
0110 = Once a day
0111 = Once a week
1000 = Once a month
1001 = Once a year (except when configured for February 29th, once every 4 years)
101x = Reserved – do not use
11xx = Reserved – do not use
bit 9-8
ALRMPTR<1:0>: Alarm Value Register Window Pointer bits
Points to the corresponding Alarm Value registers when reading ALRMVALH and ALRMVALL registers;
the ALRMPTR<1:0> value decrements on every read or write of ALRMVALH until it reaches ‘00’.
ALRMVAL<15:8>:
00 = ALRMMIN
01 = ALRMWD
10 = ALRMMNTH
11 = Unimplemented
ALRMVAL<7:0>:
00 = ALRMSEC
01 = ALRMHR
10 = ALRMDAY
11 = Unimplemented
bit 7-0
ARPT<7:0>: Alarm Repeat Counter Value bits
11111111 = Alarm will repeat 255 more times
...
00000000 = Alarm will not repeat
The counter decrements on any alarm event. The counter is prevented from rolling over from 00h to FFh
unless CHIME = 1.
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19.1.4
RTCVAL REGISTER MAPPINGS
REGISTER 19-4:
YEAR: YEAR VALUE REGISTER(1)
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
YRTEN3
YRTEN2
YRTEN1
YRTEN0
YRONE3
YRONE2
YRONE1
YRONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-8
Unimplemented: Read as ‘0’
bit 7-4
YRTEN<3:0:> Binary Coded Decimal Value of Year’s Tens Digit; Contains a value from 0 to 9
bit 3-0
YRONE<3:0>: Binary Coded Decimal Value of Year’s Ones Digit; Contains a value from 0 to 9
Note 1:
A write to the YEAR register is only allowed when RTCWREN = 1.
REGISTER 19-5:
MTHDY: MONTH AND DAY VALUE REGISTER(1)
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
—
MTHTEN0
MTHONE3
MTHONE2
MTHONE1
MTHONE0
bit 15
bit 8
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
DAYTEN1
DAYTEN0
DAYONE3
DAYONE2
DAYONE1
DAYONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12
MTHTEN0: Binary Coded Decimal Value of Month’s Tens Digit; Contains a value of 0 or 1
bit 11-8
MTHONE<3:0>: Binary Coded Decimal Value of Month’s Ones Digit; Contains a value from 0 to 9
bit 7-6
Unimplemented: Read as ‘0’
bit 5-4
DAYTEN<1:0>: Binary Coded Decimal Value of Day’s Tens Digit; Contains a value from 0 to 3
bit 3-0
DAYONE<3:0>: Binary Coded Decimal Value of Day’s Ones Digit; Contains a value from 0 to 9
Note 1:
A write to this register is only allowed when RTCWREN = 1.
DS39747F-page 168
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REGISTER 19-6:
WKDYHR: WEEKDAY AND HOURS VALUE REGISTER(1)
U-0
U-0
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
—
—
—
—
—
WDAY2
WDAY1
WDAY0
bit 15
bit 8
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
HRTEN1
HRTEN0
HRONE3
HRONE2
HRONE1
HRONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
WDAY<2:0>: Binary Coded Decimal Value of Weekday Digit; Contains a value from 0 to 6
bit 7-6
Unimplemented: Read as ‘0’
bit 5-4
HRTEN<1:0>: Binary Coded Decimal Value of Hour’s Tens Digit; Contains a value from 0 to 2
bit 3-0
HRONE<3:0>: Binary Coded Decimal Value of Hour’s Ones Digit; Contains a value from 0 to 9
Note 1:
A write to this register is only allowed when RTCWREN = 1.
REGISTER 19-7:
MINSEC: MINUTES AND SECONDS VALUE REGISTER
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
MINTEN2
MINTEN1
MINTEN0
MINONE3
MINONE2
MINONE1
MINONE0
bit 15
bit 8
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
SECTEN2
SECTEN1
SECTEN0
SECONE3
SECONE2
SECONE1
SECONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
Unimplemented: Read as ‘0’
bit 14-12
MINTEN<2:0>: Binary Coded Decimal Value of Minute’s Tens Digit; Contains a value from 0 to 5
bit 11-8
MINONE<3:0>: Binary Coded Decimal Value of Minute’s Ones Digit; Contains a value from 0 to 9
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SECTEN<2:0>: Binary Coded Decimal Value of Second’s Tens Digit; Contains a value from 0 to 5
bit 3-0
SECONE<3:0>: Binary Coded Decimal Value of Second’s Ones Digit; Contains a value from 0 to 9
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19.1.5
ALRMVAL REGISTER MAPPINGS
REGISTER 19-8:
ALMTHDY: ALARM MONTH AND DAY VALUE REGISTER(1)
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
—
MTHTEN0
MTHONE3
MTHONE2
MTHONE1
MTHONE0
bit 15
bit 8
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
DAYTEN1
DAYTEN0
DAYONE3
DAYONE2
DAYONE1
DAYONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12
MTHTEN0: Binary Coded Decimal Value of Month’s Tens Digit; Contains a value of 0 or 1
bit 11-8
MTHONE<3:0>: Binary Coded Decimal Value of Month’s Ones Digit; Contains a value from 0 to 9
bit 7-6
Unimplemented: Read as ‘0’
bit 5-4
DAYTEN<1:0>: Binary Coded Decimal Value of Day’s Tens Digit; Contains a value from 0 to 3
bit 3-0
DAYONE<3:0>: Binary Coded Decimal Value of Day’s Ones Digit; Contains a value from 0 to 9
Note 1:
A write to this register is only allowed when RTCWREN = 1.
REGISTER 19-9:
ALWDHR: ALARM WEEKDAY AND HOURS VALUE REGISTER(1)
U-0
U-0
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
—
—
—
—
—
WDAY2
WDAY1
WDAY0
bit 15
bit 8
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
HRTEN1
HRTEN0
HRONE3
HRONE2
HRONE1
HRONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
WDAY<2:0>: Binary Coded Decimal Value of Weekday Digit; Contains a value from 0 to 6
bit 7-6
Unimplemented: Read as ‘0’
bit 5-4
HRTEN<1:0>: Binary Coded Decimal Value of Hour’s Tens Digit; Contains a value from 0 to 2
bit 3-0
HRONE<3:0>: Binary Coded Decimal Value of Hour’s Ones Digit; Contains a value from 0 to 9
Note 1:
A write to this register is only allowed when RTCWREN = 1.
DS39747F-page 170
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REGISTER 19-10: ALMINSEC: ALARM MINUTES AND SECONDS VALUE REGISTER
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
MINTEN2
MINTEN1
MINTEN0
MINONE3
MINONE2
MINONE1
MINONE0
bit 15
bit 8
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
SECTEN2
SECTEN1
SECTEN0
SECONE3
SECONE2
SECONE1
SECONE0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
Unimplemented: Read as ‘0’
bit 14-12
MINTEN<2:0>: Binary Coded Decimal Value of Minute’s Tens Digit; Contains a value from 0 to 5
bit 11-8
MINONE<3:0>: Binary Coded Decimal Value of Minute’s Ones Digit; Contains a value from 0 to 9
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SECTEN<2:0>: Binary Coded Decimal Value of Second’s Tens Digit; Contains a value from 0 to 5
bit 3-0
SECONE<3:0>: Binary Coded Decimal Value of Second’s Ones Digit; Contains a value from 0 to 9
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19.2
Calibration
The real-time crystal input can be calibrated using the
periodic auto-adjust feature. When properly calibrated,
the RTCC can provide an error of less than 3 seconds
per month. This is accomplished by finding the number
of error clock pulses and storing the value into the
lower half of the RCFGCAL register. The 8-bit signed
value loaded into the lower half of RCFGCAL is multiplied by four and will either be added or subtracted from
the RTCC timer, once every minute. Refer to the steps
below for RTCC calibration:
1.
2.
Using another timer resource on the device, the
user must find the error of the 32.768 kHz
crystal.
Once the error is known, it must be converted to
the number of error clock pulses per minute.
EQUATION 19-1:
(Ideal Frequency† – Measured Frequency) * 60 = Clocks per Minute
† Ideal Frequency = 32,768 Hz
3.
a) If the oscillator is faster then ideal (negative
result form Step 2), the RCFGCAL register value
needs to be negative. This causes the specified
number of clock pulses to be subtracted from
the timer counter, once every minute.
b) If the oscillator is slower then ideal (positive
result from Step 2), the RCFGCAL register value
needs to be positive. This causes the specified
number of clock pulses to be subtracted from
the timer counter, once every minute.
4.
Divide the number of error clocks per minute by
4 to get the correct CAL value and load the
RCFGCAL register with the correct value. (Each
1-bit increment in CAL adds or subtracts
4 pulses). Load the RCFGCAL register with the
correct value.
Writes to the lower half of the RCFGCAL register
should only occur when the timer is turned off or
immediately after the rising edge of the seconds pulse.
Note:
It is up to the user to include in the error
value, the initial error of the crystal drift
due to temperature and drift due to crystal
aging.
DS39747F-page 172
19.3
Alarm
• Configurable from half second to one year
• Enabled using the ALRMEN bit
(ALCFGRPT<15>, Register 19-3)
• One-time alarm and repeat alarm options are
available
19.3.1
CONFIGURING THE ALARM
The alarm feature is enabled using the ALRMEN bit.
This bit is cleared when an alarm is issued. Writes to
ALRMVALH:ALRMVALL should only take place when
ALRMEN = 0.
As shown in Figure 19-2, the interval selection of the
alarm is configured through the AMASK bits
(ALCFGRPT<13:10>). These bits determine which and
how many digits of the alarm must match the clock value
for the alarm to occur. The alarm can also be configured
to repeat, based on a preconfigured interval. The
amount of times this occurs, once the alarm is enabled,
is stored in the lower half of the ALCFGRPT register.
When ALCFGRPT = 00 and the CHIME
(ALCFGRPT<14>) bit = 0, the repeat function is
disabled and only a single alarm will occur. The alarm
can be repeated up to 255 times by loading the lower
half of the ALCFGRPT register with FFh.
After each alarm is issued, the ALCFGRPT register is
decremented by one. Once the register has reached
‘00’, the alarm will be issued one last time, after which,
the ALRMEN bit will be cleared automatically and the
alarm will turn off. Indefinite repetition of the alarm can
occur if the CHIME bit = 1. Instead of the alarm being
disabled when the ALCFGRPT register reaches ‘00’, it
will roll over to FF and continue counting indefinitely
when CHIME = 1.
19.3.2
ALARM INTERRUPT
At every alarm event an interrupt is generated. In addition, an alarm pulse output is provided that operates at
half the frequency of the alarm. This output is
completely synchronous to the RTCC clock and can be
used as a trigger clock to other peripherals.
Note:
Changing any of the registers, other then
the RCFGCAL and ALCFGRPT registers,
and the CHIME bit while the alarm is
enabled (ALRMEN = 1), can result in a
false alarm event leading to a false alarm
interrupt. To avoid a false alarm event, the
timer and alarm values should only be
changed while the alarm is disabled
(ALRMEN = 0). It is recommended that
the ALCFGRPT register and CHIME bit be
changed when RTCSYNC = 0.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
FIGURE 19-2:
ALARM MASK SETTINGS
Alarm Mask Setting
(AMASK<3:0>)
Day of
the
Week
Month
Day
Hours
Minutes
Seconds
0000 – Every half second
0001 – Every second
0010 – Every 10 seconds
s
0011 – Every minute
s
s
m
s
s
m
m
s
s
0100 – Every 10 minutes
0101 – Every hour
0110 – Every day
0111 – Every week
d
1000 – Every month
1001 – Every year(1)
Note 1:
m
m
h
h
m
m
s
s
h
h
m
m
s
s
d
d
h
h
m
m
s
s
d
d
h
h
m
m
s
s
Annually, except when configured for February 29.
 2005-2012 Microchip Technology Inc.
DS39747F-page 173
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 174
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
20.0
PROGRAMMABLE CYCLIC
REDUNDANCY CHECK (CRC)
GENERATOR
20.2
The module implements a software configurable CRC
generator. The terms of the polynomial and its length
can be programmed using the CRCXOR (X<15:1>) bits
and the CRCCON (PLEN<3:0>) bits, respectively.
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 30. “Programmable Cyclic Redundancy Check
(CRC)” (DS39714) in the “PIC24F Family
Reference Manual” for more information.
Note:
Consider the following equation:
EQUATION 20-1:
x
• User-programmable polynomial CRC equation
• Interrupt output
• Data FIFO
TABLE 20-1:
+ x12 + x5 + 1
EXAMPLE CRC SETUP
Bit Name
Bit Value
PLEN<3:0>
Registers
1111
X<15:1>
There are four registers used to control programmable
CRC operation:
•
•
•
•
CRC POLYNOMIAL
16
To program this polynomial into the CRC generator,
the CRC register bits should be set, as shown in
Table 20-1.
The programmable CRC generator offers the following
features:
20.1
Overview
000100000010000
Note that for the value of X<15:1>, the 12th bit and the
5th bit are set to ‘1’, as required by the equation. The
0 bit, required by the equation, is always XORed. For a
16-bit polynomial, the 16th bit is also always assumed to
be XORed; therefore, the X<15:1> bits do not have the
0 bit or the 16th bit.
CRCCON
CRCXOR
CRCDAT
CRCWDAT
The topology of a standard CRC generator is shown in
Figure 20-2.
FIGURE 20-1:
CRC SHIFTER DETAILS
PLEN<3:0>
0
1
2
15
CRC Shift Register
Hold
XOR
DOUT
OUT
IN
BIT 0
X1
0
1
p_clk
Hold
OUT
IN
BIT 1
p_clk
X2
0
1
Hold
OUT
IN
BIT 2
X3
X15
0
0
1
1
p_clk
Hold
OUT
IN
BIT 15
p_clk
CRC Read Bus
CRC Write Bus
 2005-2012 Microchip Technology Inc.
DS39747F-page 175
PIC24FJ128GA010 FAMILY
CRC GENERATOR RECONFIGURED FOR x16 + x12 + x5 + 1
FIGURE 20-2:
XOR
D
Q
D
Q
D
Q
D
Q
D
Q
SDOx
BIT 0
BIT 4
BIT 5
BIT 12
BIT 15
p_clk
p_clk
p_clk
p_clk
p_clk
CRC Read Bus
CRC Write Bus
20.3
20.3.1
User Interface
DATA INTERFACE
To start serial shifting, a ‘1’ must be written to the
CRCGO bit.
The module incorporates a FIFO that is 8-deep when
PLEN<3:0> (CRCCON<3:0>) > 7 and 16-deep otherwise. The data for which the CRC is to be calculated
must first be written into the FIFO. The smallest data
element that can be written into the FIFO is one byte.
For example, if PLEN = 5, then the size of the data is
PLEN + 1 = 6. The data must be written as follows:
data[5:0] = crc_input[5:0]
data[7:6] = ‘bxx
Once data is written into the CRCWDAT MSb (as
defined by PLEN), the value of the VWORD<4:0> bits
(CRCCON<12:8>) increment by one. The serial shifter
starts shifting data into the CRC engine when
CRCGO = 1 and VWORD > 0. When the MSb is
shifted out, VWORD decrements by one. The serial
shifter continues shifting until the VWORD reaches 0.
Therefore, for a given value of PLEN, it will take
(PLEN<3:0> + 1)/2 x VWORD number of clock cycles
to complete the CRC calculations.
When VWORD reaches 8 (or 16), the CRCFUL bit will
be set. When VWORD reaches 0, the CRCMPT bit will
be set.
DS39747F-page 176
To continually feed data into the CRC engine, the recommended mode of operation is to initially “prime” the
FIFO with a sufficient number of words, so no interrupt
is generated before the next word can be written. Once
that is done, start the CRC by setting the CRCGO bit to
‘1’. From that point onward, the VWORD bits should be
polled. If they read less than 8 or 16, another word can
be written into the FIFO.
To empty words already written into a FIFO, the
CRCGO bit must be set to ‘1’ and the CRC shifter
allowed to run until the CRCMPT bit is set.
Also, to get the correct CRC reading, it will be
necessary to wait for the CRCMPT bit to go high before
reading the CRCWDAT register.
If a word is written when the CRCFUL bit is set, the
VWORD Pointer will roll over to 0. The hardware will
then behave as if the FIFO is empty. However, the condition to generate an interrupt will not be met; therefore,
no interrupt will be generated (see Section 20.3.2
“Interrupt Operation”).
At least one instruction cycle must pass after a write to
CRCWDAT before a read of the VWORD bits is done.
20.3.2
INTERRUPT OPERATION
When VWORD<4:0> make a transition from a value of
‘1’ to ‘0’, an interrupt will be generated.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 20-1:
CRCCON: CRC CONTROL REGISTER
U-0
U-0
R/W-0
R-0
R-0
R-0
R-0
R-0
—
—
CSIDL
VWORD4
VWORD3
VWORD2
VWORD1
VWORD0
bit 15
bit 8
R-0
R-1
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CRCFUL
CRCMPT
—
CRCGO
PLEN3
PLEN2
PLEN1
PLEN0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
Unimplemented: Read as ‘0’
bit 13
CSIDL: CRC Stop in Idle Mode bit
1 = Discontinues module operation when the device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-8
VWORD<4:0>: Pointer Value bits
Indicates the number of valid words in the FIFO. It has a maximum value of 8 when PLEN<3:0> > 7
or 16 when PLEN<3:0> 7.
bit 7
CRCFUL: FIFO Full bit
1 = FIFO is full
0 = FIFO is not full
bit 6
CRCMPT: FIFO Empty bit
1 = FIFO is empty
0 = FIFO is not empty
bit 5
Unimplemented: Read as ‘0’
bit 4
CRCGO: Start CRC bit
1 = Starts CRC serial shifter
0 = CRC serial shifter is turned off
bit 3-0
PLEN<3:0>: Polynomial Length bits
Denotes the length of the polynomial to be generated minus 1.
20.4
20.4.1
Operation in Power Save Modes
SLEEP MODE
If Sleep mode is entered while the module is operating,
the module will be suspended in its current state until
clock execution resumes.
 2005-2012 Microchip Technology Inc.
20.4.2
IDLE MODE
To continue full module operation in Idle mode, the
CSIDL bit must be cleared prior to entry into the mode.
If CSIDL = 1, the module will behave the same way as
it does in Sleep mode. Pending interrupt events will be
passed on, even though the module clocks are not
available.
DS39747F-page 177
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 178
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
21.0
Note:
10-BIT HIGH-SPEED A/D
CONVERTER
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 17. “10-Bit A/D
Converter” (DS39705) in the “PIC24F
Family Reference Manual” for more
information.
A block diagram of the A/D Converter is shown in
Figure 21-1.
To perform an A/D conversion:
1.
The 10-bit A/D Converter has the following key
features:
•
•
•
•
•
•
•
•
•
•
Successive Approximation (SAR) conversion
Conversion speeds of up to 500 ksps
Up to 16 analog input pins
External voltage reference input pins
Automatic Channel Scan mode
Selectable conversion trigger source
16-word conversion result buffer
Selectable Buffer Fill modes
Four result alignment options
Operation during CPU Sleep and Idle modes
Depending on the particular device pinout, the 10-bit
A/D Converter can have up to 16 analog input pins,
designated AN0 through AN15. In addition, there are
two analog input pins for external voltage reference
connections. These voltage reference inputs may be
shared with other analog input pins. The actual number
of analog input pins and external voltage reference
input configuration will depend on the device. Refer to
the specific device data sheet for further details.
 2005-2012 Microchip Technology Inc.
2.
Configure the A/D module:
a) Select the port pins as analog inputs
(AD1PCFG<15:0>).
b) Select a voltage reference source to match
the expected range on the analog inputs
(AD1CON2<15:13>).
c) Select the analog conversion clock to match
the desired data rate with the processor clock
(AD1CON3<7:0>).
d) Select the appropriate sample/conversion sequence (AD1CON1<7:0> and
AD1CON3<12:8>).
e) Select how conversion results are
presented in the buffer (AD1CON1<9:8>).
f) Select the interrupt rate (AD1CON2<5:2>).
g) Turn on the A/D module (AD1CON1<15>).
Configure the A/D interrupt (if required):
a) Clear the AD1IF bit.
b) Select the A/D interrupt priority.
Note:
A/D results should be read with the ADON
bit = 1. If the A/D is disabled before
reading the buffer, it is possible to lose
data.
DS39747F-page 179
PIC24FJ128GA010 FAMILY
Figure 21-1:
10-BIT HIGH-SPEED A/D CONVERTER BLOCK DIAGRAM
Internal Data Bus
AVSS
VREF+
VR Select
AVDD
16
VR+
VR-
Comparator
VREF-
VINH
VINL
AN0
AN1
VRS/H
VINH
10-Bit SAR
AN4
MUX A
AN2
AN3
AN5
VINL
ADC1BUF0:
ADC1BUFF
AN7
AN8
AD1CON1
AD1CON2
AD1CON3
AD1CHS
AN12
MUX B
AN9
AN11
Conversion Logic
Data Formatting
AN6
AN10
VR+
DAC
VINH
AD1PCFG
AD1CSSL
VINL
AN13
AN14
AN15
DS39747F-page 180
Sample Control
Control Logic
Conversion Control
Input MUX Control
Pin Config. Control
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 21-1:
AD1CON1: A/D CONTROL REGISTER 1
R/W-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
ADON(1)
—
ADSIDL
—
—
—
FORM1
FORM0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
R/W-0
R/W-0, HCS
R/C-0, HCS
SSRC2
SSRC1
SSRC0
—
—
ASAM
SAMP
DONE
bit 7
bit 0
Legend:
C = Clearable bit
HCS = Hardware Clearable/Settable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ADON: A/D Operating Mode bit(1)
1 = A/D Converter module is operating
0 = A/D Converter is off
bit 14
Unimplemented: Read as ‘0’
bit 13
ADSIDL: Stop in Idle Mode bit
1 = Discontinues module operation when the device enters Idle mode
0 = Continues module operation in Idle mode
bit 12-10
Unimplemented: Read as ‘0’
bit 9-8
FORM<1:0>: Data Output Format bits
11 = Signed fractional (sddd dddd dd00 0000)
10 = Fractional (dddd dddd dd00 0000)
01 = Signed integer (ssss sssd dddd dddd)
00 = Integer (0000 00dd dddd dddd)
bit 7-5
SSRC<2:0>: Conversion Trigger Source Select bits
111 = Internal counter ends sampling and starts conversion (auto-convert)
110 = Reserved
10x = Reserved
011 = Reserved
010 = Timer3 compare ends sampling and starts conversion
001 = Active transition on the INT0 pin ends sampling and starts conversion
000 = Clearing the SAMP bit ends sampling and starts conversion
bit 4-3
Unimplemented: Read as ‘0’
bit 2
ASAM: A/D Sample Auto-Start bit
1 = Sampling begins immediately after the last conversion completes; SAMP bit is auto-set
0 = Sampling begins when the SAMP bit is set
bit 1
SAMP: A/D Sample Enable bit
1 = A/D Sample-and-Hold amplifier is sampling input
0 = A/D Sample-and-Hold amplifier is holding
bit 0
DONE: A/D Conversion Status bit
1 = A/D conversion is done
0 = A/D conversion is NOT done
Note 1:
The values of the ADC1BUFx registers will not retain their values once the ADON bit is cleared. Read out
the conversion values from the buffer before disabling the module.
 2005-2012 Microchip Technology Inc.
DS39747F-page 181
PIC24FJ128GA010 FAMILY
REGISTER 21-2:
AD1CON2: A/D CONTROL REGISTER 2
R/W-0
R/W-0
R/W-0
U-0
U-0
R/W-0
U-0
U-0
VCFG2
VCFG1
VCFG0
r
—
CSCNA
—
—
bit 15
bit 8
R-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
BUFS
—
SMPI3
SMPI2
SMPI1
SMPI0
BUFM
ALTS
bit 7
bit 0
Legend:
r = Reserved bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-13
x = Bit is unknown
VCFG<2:0>: Voltage Reference Configuration bits:
VCFG<2:0>
VR+
VR-
000
AVDD
AVSS
001
External VREF+ pin
AVSS
010
AVDD
External VREF- pin
011
External VREF+ pin
External VREF- pin
1xx
AVDD
AVSS
bit 12
Reserved
bit 11
Unimplemented: Read as ‘0’
bit 10
CSCNA: Scan Input Selections for CH0+ S/H Input for MUX A Input Multiplexor Setting bit
1 = Scan inputs
0 = Do not scan inputs
bit 9-8
Unimplemented: Read as ‘0’
bit 7
BUFS: Buffer Fill Status bit (valid only when BUFM = 1)
1 = A/D is currently filling Buffer 08-0F, user should access data in 00-07
0 = A/D is currently filling Buffer 00-07, user should access data in 08-0F
bit 6
Unimplemented: Read as ‘0’
bit 5-2
SMPI<3:0>: Sample/Convert Sequences Per Interrupt Selection bits
1111 = Interrupts at the completion of conversion for each 16th sample/convert sequence
1110 = Interrupts at the completion of conversion for each 15th sample/convert sequence
.....
0001 = Interrupts at the completion of conversion for each 2nd sample/convert sequence
0000 = Interrupts at the completion of conversion for each sample/convert sequence
bit 1
BUFM: Buffer Mode Select bit
1 = Buffer configured as two 8-word buffers (ADC1BUFx<15:8> and ADC1BUFx<7:0>)
0 = Buffer configured as one 16-word buffer (ADC1BUFx<15:0>)
bit 0
ALTS: Alternate Input Sample Mode Select bit
1 = Uses MUX A input multiplexor settings for the first sample, then alternates between the MUX B and
MUX A input multiplexor settings for all subsequent samples
0 = Always uses MUX A input multiplexor settings
DS39747F-page 182
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 21-3:
AD1CON3: A/D CONTROL REGISTER 3
R/W-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADRC
—
—
SAMC4
SAMC3
SAMC2
SAMC1
SAMC0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADCS7
ADCS6
ADCS5
ADCS4
ADCS3
ADCS2
ADCS1
ADCS0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
ADRC: A/D Conversion Clock Source bit
1 = A/D internal RC clock
0 = Clock is derived from the system clock
bit 14-13
Unimplemented: Read as ‘0’
bit 12-8
SAMC<4:0>: Auto-Sample Time bits
11111 = 31 TAD
x = Bit is unknown
·····
00001 = 1 TAD
00000 = 0 TAD (not recommended)
bit 7-0
ADCS<7:0:> A/D Conversion Clock Select bits
11111111
····· = Reserved
01000000
00111111 = 64 * TCY
·····
00000001 = 2 * TCY
00000000 = TCY
 2005-2012 Microchip Technology Inc.
DS39747F-page 183
PIC24FJ128GA010 FAMILY
REGISTER 21-4:
AD1CHS: A/D INPUT SELECT REGISTER
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NB
—
—
—
CH0SB3
CH0SB2
CH0SB1
CH0SB0
bit 15
bit 8
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NA
—
—
—
CH0SA3
CH0SA2
CH0SA1
CH0SA0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CH0NB: Channel 0 Negative Input Select for MUX B Multiplexor Setting bit
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VR-
bit 14-12
Unimplemented: Read as ‘0’
bit 11-8
CH0SB<3:0>: Channel 0 Positive Input Select for MUX B Multiplexor Setting bits
1111 = Channel 0 positive input is AN15
1110 = Channel 0 positive input is AN14
·····
0001 = Channel 0 positive input is AN1
0000 = Channel 0 positive input is AN0
bit 7
CH0NA: Channel 0 Negative Input Select for MUX A Multiplexor Setting bit
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VR-
bit 6-4
Unimplemented: Read as ‘0’
bit 3-0
CH0SA<3:0>: Channel 0 Positive Input Select for MUX A Multiplexor Setting bits
1111 = Channel 0 positive input is AN15
1110 = Channel 0 positive input is AN14
·····
0001 = Channel 0 positive input is AN1
0000 = Channel 0 positive input is AN0
DS39747F-page 184
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 21-5:
AD1PCFG: A/D PORT CONFIGURATION REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PCFG15
PCFG14
PCFG13
PCFG12
PCFG11
PCFG10
PCFG9
PCFG8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PCFG7
PCFG6
PCFG5
PCFG4
PCFG3
PCFG2
PCFG1
PCFG0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-0
x = Bit is unknown
PCFG<15:0>: Analog Input Pin Configuration Control bits
1 = Pin for corresponding analog channel is configured in Digital mode; I/O port read is enabled
0 = Pin configured in Analog mode; I/O port read is disabled, A/D samples pin voltage
REGISTER 21-6:
AD1CSSL: A/D INPUT SCAN SELECT REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CSSL15
CSSL14
CSSL13
CSSL12
CSSL11
CSSL10
CSSL9
CSSL8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CSSL7
CSSL6
CSSL5
CSSL4
CSSL3
CSSL2
CSSL1
CSSL0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-0
x = Bit is unknown
CSSL<15:0>: A/D Input Pin Scan Selection bits
1 = Corresponding analog channel is selected for input scan
0 = Analog channel is omitted from input scan
 2005-2012 Microchip Technology Inc.
DS39747F-page 185
PIC24FJ128GA010 FAMILY
A/D CONVERSION CLOCK PERIOD(1)
EQUATION 21-1:
TAD = TCY (ADCS + 1)
TAD
–1
ADCS =
TCY
Note 1:
Based on TCY = TOSC * 2; Doze mode and PLL are disabled.
FIGURE 21-2:
10-BIT A/D CONVERTER ANALOG INPUT MODEL
VDD
Rs
VA
RIC  250
VT = 0.6V
ANx
CPIN
6-11 pF
(Typical)
VT = 0.6V
Sampling
Switch
RSS  5 k(Typical)
RSS
ILEAKAGE
500 nA
CHOLD
= DAC Capacitance
= 4.4 pF (Typical)
VSS
Legend: CPIN
= Input Capacitance
= Threshold Voltage
VT
ILEAKAGE = Leakage Current at the pin due to
various junctions
= Interconnect Resistance
RIC
= Sampling Switch Resistance
RSS
= Sample/Hold Capacitance (from DAC)
CHOLD
Note: CPIN value depends on the device package and is not tested. The effect of CPIN is negligible if Rs  5 k.
DS39747F-page 186
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
FIGURE 21-3:
A/D TRANSFER FUNCTION
Output Code
(Binary (Decimal))
11 1111 1111 (1023)
11 1111 1110 (1022)
10 0000 0011 (515)
10 0000 0010 (514)
10 0000 0001 (513)
10 0000 0000 (512)
01 1111 1111 (511)
01 1111 1110 (510)
01 1111 1101 (509)
00 0000 0001 (1)
 2005-2012 Microchip Technology Inc.
(VINH – VINL)
VR+
1024
1023*(VR+ – VR-)
VR- +
1024
VR- +
512*(VR+ – VR-)
1024
VR- +
Voltage Level
VR+ – VR-
0
VR-
00 0000 0000 (0)
DS39747F-page 187
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 188
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
22.0
COMPARATOR MODULE
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 19. “Comparator
Module” (DS39710) in the “PIC24F Family
Reference Manual” for more information.
FIGURE 22-1:
The analog comparator module contains two
comparators that can be configured in a variety of
ways. The inputs can be selected from the analog
inputs, multiplexed with I/O pins, as well as the on-chip
voltage reference. Block diagrams of the various
comparator configurations are shown in Figure 22-1.
COMPARATOR I/O OPERATING MODES
C1NEG
C1IN+
C1IN-
C1EN
CMCON<6>
C1INV
VINC1OUT
C1POS
C1IN+
CVREF
C1
VIN+
C2NEG
C2IN+
C2IN-
C1OUTEN
C2EN
CMCON<7>
C2INV
VINC2OUT
C2POS
C2IN+
CVREF
 2005-2012 Microchip Technology Inc.
C2
VIN+
C2OUTEN
DS39747F-page 189
PIC24FJ128GA010 FAMILY
REGISTER 22-1:
CMCON: COMPARATOR CONTROL REGISTER
R/W-0
U-0
R/C-0
R/C-0
R/W-0
R/W-0
R/W-0
R/W-0
CMIDL
—
C2EVT
C1EVT
C2EN
C1EN
C2OUTEN
C1OUTEN
bit 15
bit 8
R-0
R-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
C2OUT
C1OUT
C2INV
C1INV
C2NEG
C2POS
C1NEG
C1POS
bit 7
bit 0
Legend:
C = Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CMIDL: Stop in Idle Mode bit
1 = When the device enters Idle mode, the module does not generate interrupts; module is still enabled
0 = Continues normal module operation in Idle mode
bit 14
Unimplemented: Read as ‘0’
bit 13
C2EVT: Comparator 2 Event bit
1 = Comparator output changed states
0 = Comparator output did not change states
bit 12
C1EVT: Comparator 1 Event bit
1 = Comparator output changed states
0 = Comparator output did not change states
bit 11
C2EN: Comparator 2 Enable bit
1 = Comparator is enabled
0 = Comparator is disabled
bit 10
C1EN: Comparator 1 Enable bit
1 = Comparator is enabled
0 = Comparator is disabled
bit 9
C2OUTEN: Comparator 2 Output Enable bit
1 = Comparator output is driven on the output pad
0 = Comparator output is not driven on the output pad
bit 8
C1OUTEN: Comparator 1 Output Enable bit
1 = Comparator output is driven on the output pad
0 = Comparator output is not driven on the output pad
bit 7
C2OUT: Comparator 2 Output bit
When C2INV = 0:
1 = C2 VIN+ > C2 VIN0 = C2 VIN+ < C2 VINWhen C2INV = 1:
0 = C2 VIN+ > C2 VIN1 = C2 VIN+ < C2 VIN-
bit 6
C1OUT: Comparator 1 Output bit
When C1INV = 0:
1 = C1 VIN+ > C1 VIN0 = C1 VIN+ < C1 VINWhen C1INV = 1:
0 = C1 VIN+ > C1 VIN1 = C1 VIN+ < C1 VIN-
DS39747F-page 190
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 22-1:
CMCON: COMPARATOR CONTROL REGISTER (CONTINUED)
bit 5
C2INV: Comparator 2 Output Inversion bit
1 = C2 output is inverted
0 = C2 output is not inverted
bit 4
C1INV: Comparator 1 Output Inversion bit
1 = C1 output is inverted
0 = C1 output is not inverted
bit 3
C2NEG: Comparator 2 Negative Input Configure bit
1 = C2IN+ is connected to VIN0 = C2IN- is connected to VINSee Figure 22-1 for the Comparator modes.
bit 2
C2POS: Comparator 2 Positive Input Configure bit
1 = C2IN+ is connected to VIN+
0 = CVREF is connected to VIN+
See Figure 22-1 for the Comparator modes.
bit 1
C1NEG: Comparator 1 Negative Input Configure bit
1 = C1IN+ is connected to VIN0 = C1IN- is connected to VINSee Figure 22-1 for the Comparator modes.
bit 0
C1POS: Comparator 1 Positive Input Configure bit
1 = C1IN is connected to VIN+
0 = CVREF is connected to VIN+
See Figure 22-1 for the Comparator modes.
 2005-2012 Microchip Technology Inc.
DS39747F-page 191
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 192
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
23.0
Note:
23.1
voltage, each with 16 distinct levels. The range to be
used is selected by the CVRR bit (CVRCON<5>). The
primary difference between the ranges is the size of the
steps selected by the CVREF Selection bits
(CVR<3:0>), with one range offering finer resolution.
COMPARATOR VOLTAGE
REFERENCE
This data sheet summarizes features of
PIC24F group of devices and is not
intended to be a comprehensive reference
source. Refer to Section 20. “Comparator
Voltage Reference Module” (DS39709)
in the “PIC24F Family Reference Manual”
for more information.
The comparator reference supply voltage can come
from either VDD and VSS, or the external VREF+ and
VREF-. The voltage source is selected by the CVRSS
bit (CVRCON<4>).
The settling time of the comparator voltage reference
must be considered when changing the CVREF
output.
Configuring the Comparator
Voltage Reference
The voltage reference module is controlled through the
CVRCON register (Register 23-1). The comparator
voltage reference provides two ranges of output
FIGURE 23-1:
CVRR: Comparator VREF Range Selection bit 1 = 0
to 0.625 CVRSRC, with CVRSRC/24 step size.
0 = 0.25 CVRSRC to 0.72 CVRSRC, with CVRSRC/32
step size
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
VREF+
AVDD
CVRSS = 1
8R
CVRSS = 0
CVR<3:0>
R
CVREN
R
R
16-to-1 MUX
R
16 Steps
R
CVREF
R
R
CVRR
VREF-
8R
CVRSS = 1
CVRSS = 0
AVSS
 2005-2012 Microchip Technology Inc.
DS39747F-page 193
PIC24FJ128GA010 FAMILY
REGISTER 23-1:
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CVREN
CVROE
CVRR
CVRSS
CVR3
CVR2
CVR1
CVR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-8
Unimplemented: Read as ‘0’
bit 7
CVREN: Comparator Voltage Reference Enable bit
1 = CVREF circuit is powered on
0 = CVREF circuit is powered down
bit 6
CVROE: Comparator VREF Output Enable bit
1 = CVREF voltage level is output on the CVREF pin
0 = CVREF voltage level is disconnected from the CVREF pin
bit 5
CVRR: Comparator VREF Range Selection bit
1 = 0 to 0.625 CVRSRC, with CVRSRC/24 step size
0 = 0.25 CVRSRC to 0.72 CVRSRC, with CVRSRC/32 step size
bit 4
CVRSS: Comparator VREF Source Selection bit
1 = Comparator reference source: CVRSRC = VREF+ – VREF0 = Comparator reference source: CVRSRC = AVDD – AVSS
bit 3-0
CVR<3:0>: Comparator VREF Value Selection 0  CVR<3:0>  15 bits
When CVRR = 1:
CVREF = (CVR<3:0>/ 24)  (CVRSRC)
When CVRR = 0:
CVREF = 1/4  (CVRSRC) + (CVR<3:0>/32)  (CVRSRC)
DS39747F-page 194
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
24.0
Note:
SPECIAL FEATURES
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference source. Refer to Section 32.
“High-Level
Device
Integration”
(DS39719) in the “PIC24F Family
Reference Manual” for more information.
PIC24FJ128GA010 devices include several features
intended to maximize application flexibility and reliability, and minimize cost through elimination of external
components. These are:
•
•
•
•
•
•
Flexible Configuration
Watchdog Timer (WDT)
Code Protection
JTAG Boundary Scan Interface
In-Circuit Serial Programming™ (ICSP™)
In-Circuit Emulation
24.1
24.1.1
CONSIDERATIONS FOR
CONFIGURING PIC24FJ128GA010
FAMILY DEVICES
In PIC24FJ128GA010 family devices, the configuration
bytes are implemented as volatile memory. This means
that configuration data must be programmed each time
the device is powered up. Configuration data is stored
in the two words at the top of the on-chip program
memory space, known as the Flash Configuration
Words. Their specific locations are shown in
Table 24-1. These are packed representations of the
actual device Configuration bits, whose actual
locations are distributed among five locations in configuration space. The configuration data is automatically
loaded from the Flash Configuration Words to the
proper Configuration registers during device Resets.
Note:
Configuration data is reloaded on all types
of device Resets.
TABLE 24-1:
Configuration Bits
The Configuration bits can be programmed (read as
‘0’) or left unprogrammed (read as ‘1’) to select various
device configurations. These bits are mapped, starting
at program memory location, F80000h. A complete list
is shown in Table 24-1. A detailed explanation of the
various bit functions is provided in Register 24-1
through Register 24-4.
Note that address, F80000h, is beyond the user program
memory space. In fact, it belongs to the configuration
memory space (800000h-FFFFFFh), which can only be
accessed using table reads and table writes.
FLASH CONFIGURATION
WORD LOCATIONS
Device
Configuration Word
Addresses
1
2
PIC24FJ64GA
00ABFEh
00ABFCh
PIC24FJ96GA
00FFFEh
00FFFCh
PIC24FJ128GA
0157FEh
0157FCh
When creating applications for these devices, users
should always specifically allocate the location of the
Flash Configuration Word for configuration data. This is
to make certain that program code is not stored in this
address when the code is compiled.
The Configuration bits are reloaded from the Flash
Configuration Word on any device Reset.
The upper byte of both Flash Configuration Words in
program memory should always be ‘1111 1111’. This
makes them appear to be NOP instructions in the
remote event that their locations are ever executed by
accident. Since Configuration bits are not implemented
in the corresponding locations, writing ‘1’s to these
locations has no effect on device operation.
 2005-2012 Microchip Technology Inc.
DS39747F-page 195
PIC24FJ128GA010 FAMILY
REGISTER 24-1:
FLASH CONFIGURATION WORD 1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
r-x
r
bit 16
R/PO-1
(1)
JTAGEN
R/PO-1
R/PO-1
R/PO-1
r-1
U-1
R/PO-1
GCP
GWRP
DEBUG
r
—
ICS
bit 15
bit 8
R/PO-1
R/PO-1
U-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
FWDTEN
WINDIS
—
FWPSA
WDTPS3
WDTPS2
WDTPS1
WDTPS0
bit 7
bit 0
Legend:
x = Bit is unknown
r = Reserved
R = Readable bit
PO = Program Once bit
U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 23-16
Unimplemented: Read as ‘1’
bit 15
Reserved: Program as ‘0’. Read value is unknown.
bit 14
JTAGEN: JTAG Port Enable bit(1)
1 = JTAG port is enabled
0 = JTAG port is disabled
bit 13
GCP: General Segment Program Memory Code Protection bit
1 = Code protection is disabled
0 = Code protection is enabled for the entire program memory space
bit 12
GWRP: General Segment Code Flash Write Protection bit
1 = Writes to program memory are allowed
0 = Writes to program memory are disabled
bit 11
DEBUG: Background Debugger Enable bit
1 = Device resets into Operational mode
0 = Device resets into Debug mode
bit 10
Reserved: Program as ‘1’
bit 9
Unimplemented: Read as ‘1’
bit 8
ICS: Emulator Pin Placement Select bit
1 = Emulator/debugger uses EMUC2/EMUD2
0 = Emulator/debugger uses EMUC1/EMUD1
bit 7
FWDTEN: Watchdog Timer Enable bit
1 = Watchdog Timer is enabled
0 = Watchdog Timer is disabled
bit 6
WINDIS: Windowed Watchdog Timer Disable bit
1 = Standard Watchdog Timer is enabled
0 = Windowed Watchdog Timer is enabled; FWDTEN must be ‘1’
bit 5
Unimplemented: Read as ‘1’
bit 4
FWPSA: WDT Prescaler Ratio Select bit
1 = Prescaler ratio of 1:128
0 = Prescaler ratio of 1:32
Note 1:
JTAGEN bit can not be modified using JTAG programming. It can only change using In-Circuit Serial
Programming™ (ICSP™).
DS39747F-page 196
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 24-1:
bit 3-0
Note 1:
FLASH CONFIGURATION WORD 1 (CONTINUED)
WDTPS<3:0>: Watchdog Timer Postscaler Select bits
1111 = 1:32,768
1110 = 1:16,384
1101 = 1:8,192
1100 = 1:4,096
1011 = 1:2,048
1010 = 1:1,024
1001 = 1:512
1000 = 1:256
0111 = 1:128
0110 = 1:64
0101 = 1:32
0100 = 1:16
0011 = 1:8
0010 = 1:4
0001 = 1:2
0000 = 1:1
JTAGEN bit can not be modified using JTAG programming. It can only change using In-Circuit Serial
Programming™ (ICSP™).
 2005-2012 Microchip Technology Inc.
DS39747F-page 197
PIC24FJ128GA010 FAMILY
REGISTER 24-2:
FLASH CONFIGURATION WORD 2
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
bit 16
R/PO-1
U-1
U-1
U-1
U-1
R/PO-1
R/PO-1
R/PO-1
IESO
—
—
—
—
FNOSC2
FNOSC1
FNOSC0
bit 15
bit 8
R/PO-1
R/PO-1
R/PO-1
U-1
U-1
U-1
R/PO-1
R/PO-1
FCKSM1
FCKSM0
OSCIOFCN
—
—
—
POSCMD1
POSCMD0
bit 7
bit 0
Legend:
x = Bit is unknown
R = Readable bit
PO = Program Once bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 23-16
Unimplemented: Read as ‘1’
bit 15
IESO: Internal External Switchover bit
1 = IESO mode (Two-Speed Start-up) is enabled
0 = IESO mode (Two-Speed Start-up) is disabled
bit 14-11
Unimplemented: Read as ‘1’
bit 10-8
FNOSC<2:0>: Initial Oscillator Select bits
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
bit 7-6
FCKSM<1:0>: Clock Switching and Fail-Safe Clock Monitor Configuration bits
1x = Clock switching and Fail-Safe Clock Monitor are disabled
01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled
bit 5
OSCIOFCN: OSC2 Pin Configuration bit
If POSCMD<1:0> = 11 or 00:
1 = OSC2/CLKO/RC15 functions as CLKO (FOSC/2)
0 = OSC2/CLKO/RC15 functions as port I/O (RC15)
If POSCMD<1:0> = 10 or 01:
OSCIOFCN has no effect on OSC2/CLKO/RC15.
bit 4-2
Unimplemented: Read as ‘1’
bit 1-0
POSCMD<1:0>: Primary Oscillator Configuration bits
11 = Primary oscillator is disabled
10 = HS Oscillator mode is selected
01 = XT Oscillator mode is selected
00 = EC Oscillator mode is selected
DS39747F-page 198
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
REGISTER 24-3:
DEVID: DEVICE ID REGISTER
U
U
U
U
U
U
U
U
—
—
—
—
—
—
—
—
bit 23
bit 16
U
U
R
R
R
R
R
R
—
—
FAMID7
FAMID6
FAMID5
FAMID4
FAMID3
FAMID2
bit 15
bit 8
R
R
R
R
R
R
R
R
FAMID1
FAMID0
DEV5
DEV4
DEV3
DEV2
DEV1
DEV0
bit 7
bit 0
Legend:
x = Bit is unknown
R = Readable bit
PO = Program Once bit
U = Unimplemented bit, read as ‘1’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 23-14
Unimplemented: Read as ‘0’
bit 13-6
FAMID<7:0>: Device Family Identifier bits
00010000 = PIC24FJ128GA010 family
bit 5-0
DEV<5:0>: Individual Device Identifier bits
000101 = PIC24FJ64GA006
000110 = PIC24FJ96GA006
000111 = PIC24FJ128GA006
001000 = PIC24FJ64GA008
001001 = PIC24FJ96GA008
001010 = PIC24FJ128GA008
001011 = PIC24FJ64GA010
001100 = PIC24FJ96GA010
001101 = PIC24FJ128GA010
 2005-2012 Microchip Technology Inc.
x = Bit is unknown
DS39747F-page 199
PIC24FJ128GA010 FAMILY
REGISTER 24-4:
DEVREV: DEVICE REVISION REGISTER
U
U
U
U
U
U
U
U
—
—
—
—
—
—
—
—
bit 23
bit 16
R-0
R-0
R-1
R-1
U
U
U
R
r
r
r
r
—
—
—
MAJRV2
bit 15
bit 8
R
R
U
U
U
R
R
R
MAJRV1
MAJRV0
—
—
—
DOT2
DOT1
DOT0
bit 7
bit 0
Legend:
x = Bit is unknown
R = Readable bit
PO = Program Once bit
U = Unimplemented bit, read as ‘1’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 23-16
Unimplemented: Read as ‘0’
bit 15-12
Reserved: Read as ‘0011’
bit 11-9
Unimplemented: Read as ‘0’
bit 8-6
MAJRV<2:0>: Major Revision Identifier bits
bit 5-3
Unimplemented: Read as ‘0’
bit 2-0
DOT<2:0>: Minor Revision Identifier bits
DS39747F-page 200
r = Reserved
x = Bit is unknown
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
24.2
On-Chip Voltage Regulator
All of the PIC24FJ128GA010 family devices power
their core digital logic at a nominal 2.5V. This may
create an issue for designs that are required to operate
at a higher typical voltage, such as 3.3V. To simplify
system design, all devices in the PIC24FJ128GA010
family incorporate an on-chip regulator that allows the
device to run its core logic from VDD.
The regulator is controlled by the ENVREG pin. Tying
VDD to the pin enables the regulator, which in turn,
provides power to the core from the other VDD pins.
When the regulator is enabled, a low-ESR capacitor
(such as tantalum) must be connected to the
VDDCORE/VCAP pin (Figure 24-1). This helps to maintain the stability of the regulator. The recommended
value for the filter capacitor, CEFC, is provided in
Section 27.1 “DC Characteristics”.
If ENVREG is tied to VSS, the regulator is disabled. In
this case, separate power for the core logic, at a nominal 2.5V, must be supplied to the device on the
VDDCORE/VCAP pin to run the I/O pins at higher voltage
levels, typically 3.3V. Alternatively, the VDDCORE/VCAP
and VDD pins can be tied together to operate at a lower
nominal voltage. Refer to Figure 24-1 for possible
configurations.
24.2.1
FIGURE 24-1:
Regulator Enabled (ENVREG tied to VDD):
3.3V
PIC24FJ128GA010
VDD
ENVREG
VDDCORE/VCAP
CEFC
(10 F typ)
Regulator Disabled (ENVREG tied to ground):
2.5V(1)
3.3V(1)
PIC24FJ128GA010
VDD
ENVREG
VDDCORE/VCAP
VSS
Regulator Disabled (VDD tied to VDDCORE):
2.5V(1)
PIC24FJ128GA010
VDD
If the regulator is disabled, a separate Power-up Timer
(PWRT) is automatically enabled. The PWRT adds a
fixed delay of 64 ms nominal delay at device start-up.
ENVREG
VDDCORE/VCAP
ON-CHIP REGULATOR AND BOR
When
the
on-chip
regulator
is
enabled,
PIC24FJ128GA010 devices also have a simple
brown-out capability. If the voltage supplied to the regulator is inadequate to maintain a regulated level, the
regulator Reset circuitry will generate a Brown-out
Reset. This event is captured by the BOR flag bit
(RCON<0>). The brown-out voltage specifications can
be found in the “PIC24F Family Reference Manual” in
Section 7. “Reset” (DS39712).
24.2.3
VSS
ON-CHIP REGULATOR AND POR
When the voltage regulator is enabled, it takes approximately 20 s for it to generate output. During this time,
designated as TSTARTUP, code execution is disabled.
TSTARTUP is applied every time the device resumes
operation after any power-down, including Sleep mode.
24.2.2
CONNECTIONS FOR THE
ON-CHIP REGULATOR
VSS
Note 1:
These are typical operating voltages. Refer
to Section 27.1 “DC Characteristics” for
the full operating ranges of VDD and
VDDCORE.
POWER-UP REQUIREMENTS
The on-chip regulator is designed to meet the power-up
requirements for the device. If the application does not
use the regulator, then strict power-up conditions must
be adhered to. While powering up, VDDCORE must
never exceed VDD by 0.3 volts.
 2005-2012 Microchip Technology Inc.
DS39747F-page 201
PIC24FJ128GA010 FAMILY
24.3
Watchdog Timer (WDT)
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 9. “Watchdog
Timer (WDT)” (DS39697) in the “PIC24F
Family Reference Manual” for more
information.
For PIC24FJ128GA010 family devices, the WDT is
driven by the LPRC oscillator. When the WDT is
enabled, the clock source is also enabled.
The nominal WDT clock source from LPRC is 32 kHz.
This feeds a prescaler that can be configured for either
5-bit (divide-by-32) or 7-bit (divide-by-128) operation.
The prescaler is set by the FWPSA Configuration bit.
With a 32 kHz input, the prescaler yields a nominal
WDT time-out period (TWDT) of 1 ms in 5-bit mode or
4 ms in 7-bit mode.
A variable postscaler divides down the WDT prescaler
output and allows for a wide range of time-out periods.
The postscaler is controlled by the WDTPS<3:0> Configuration bits (Flash Configuration Word 1<3:0>),
which allow the selection of a total of 16 settings, from
1:1 to 1:32,768. Using the prescaler and postscaler,
time-out periods, ranging from 1 ms to 131 seconds,
can be achieved.
The WDT, prescaler and postscaler are reset:
• On any device Reset
• On the completion of a clock switch, whether
invoked by software (i.e., setting the OSWEN bit
after changing the NOSC bits) or by hardware
(i.e., Fail-Safe Clock Monitor)
• When a PWRSAV instruction is executed (i.e.,
Sleep or Idle mode is entered)
FIGURE 24-2:
• When the device exits Sleep or Idle mode to
resume normal operation
• By a CLRWDT instruction during normal execution
If the WDT is enabled, it will continue to run during
Sleep or Idle modes. When the WDT time-out occurs,
the device will wake-up and code execution will continue from where the PWRSAV instruction was executed.
The corresponding SLEEP or IDLE bits (RCON<3:2>)
will need to be cleared in software after the device
wakes up.
The WDT Flag bit, WDTO (RCON<4>), is not automatically cleared following a WDT time-out. To detect
subsequent WDT events, the flag must be cleared in
software.
Note:
24.3.1
The CLRWDT and PWRSAV instructions
clear the prescaler and postscaler counts
when executed.
CONTROL REGISTER
The WDT is enabled or disabled by the FWDTEN
Configuration bit. When the FWDTEN Configuration bit
is set, the WDT is always enabled.
The WDT can be optionally controlled in software when
the FWDTEN Configuration bit has been programmed
to ‘0’. The WDT is enabled in software by setting the
SWDTEN control bit (RCON<5>). The SWDTEN control bit is cleared on any device Reset. The software
WDT option allows the user to enable the WDT for critical code segments and disables the WDT during
non-critical segments for maximum power savings.
WATCHDOG TIMER (WDT) BLOCK DIAGRAM
SWDTEN
FWDTEN
LPRC Control
FWPSA
WDTPS<3:0>
Prescaler
(5-bit/7-bit)
LPRC Input
32 kHz
Wake from Sleep
WDT
Counter
1 ms/4 ms
Postscaler
1:1 to 1:32.768
WDT Overflow
Reset
All Device Resets
Transition to
New Clock Source
Exit Sleep or
Idle Mode
CLRWDT Instr.
PWRSAV Instr.
Sleep or Idle Mode
DS39747F-page 202
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
24.4
Note:
JTAG Interface
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 33. “Programming and Diagnostics” (DS39716) in the
“PIC24F Family Reference Manual” for
more information.
PIC24FJ128GA010 family devices implement a JTAG
interface, which supports boundary scan device testing
as well as In-Circuit Serial Programming™ (ICSP™).
Refer to the Microchip web site (www.microchip.com)
for JTAG support files and additional information.
24.5
Note:
Program Verification and
Code Protection
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 33. “Programming and Diagnostics” (DS39716) in the
“PIC24F Family Reference Manual” for
more information.
For all devices in the PIC24FJ128GA010 family, the
on-chip program memory space is treated as a single
block. Code protection for this block is controlled by
one Configuration bit, GCP (Flash Configuration
Word 1<13>. This bit inhibits external reads and writes
to the program memory space. It has no direct effect in
normal execution mode.
Write protection is controlled by the GWRP bit (Flash
Configuration Word 1<12>. When GWRP is programmed to ‘0’, internal write and erase operations to
the program memory are blocked.
24.5.1
24.6
Note:
In-Circuit Serial Programming
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 33. “Programming and Diagnostics” (DS39716) in the
“PIC24F Family Reference Manual” for
more information.
PIC24FJ128GA010 family microcontrollers can be
serially programmed while in the end application circuit.
This is simply done with two lines for clock (PGCx) and
data (PGDx), and three other lines for power, ground
and the programming voltage. This allows customers to
manufacture boards with unprogrammed devices and
then program the microcontroller just before shipping
the product. This also allows the most recent firmware
or a custom firmware to be programmed.
24.7
In-Circuit Debugger
When MPLAB® ICD 2 is selected as a debugger, the
In-Circuit Debugging functionality is enabled. This
function allows simple debugging functions when used
with MPLAB IDE. Debugging functionality is controlled
through the EMUCx (Emulation/Debug Clock) and
EMUDx (Emulation/Debug Data) pins.
To use the In-Circuit Debugger function of the device, the
design must implement ICSP connections to MCLR,
VDD, VSS, PGCx, PGDx and the EMUDx/EMUCx pin
pair. In addition, when the feature is enabled, some of the
resources are not available for general use. These
resources include the first 80 bytes of data RAM and two
I/O pins.
CONFIGURATION REGISTER
PROTECTION
The Configuration registers are protected against
inadvertent or unwanted changes, or reads in two
ways. The primary protection method is the same as
that of the shadow registers, which contain a complimentary value that is constantly compared with the
actual value. To safeguard against unpredictable
events, Configuration bit changes resulting from individual cell level disruptions (such as ESD events) will
cause a parity error and trigger a device Configuration
Word Mismatch Reset.
The data for the Configuration registers is derived from
the Flash Configuration Words in program memory. As
a consequence, when the GCP bit is set, the source
data for the device configuration is also protected.
 2005-2012 Microchip Technology Inc.
DS39747F-page 203
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 204
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
25.0
INSTRUCTION SET SUMMARY
The PIC24F instruction set adds many enhancements
to the previous PIC® MCU instruction sets, while maintaining an easy migration from previous PIC MCU
instruction sets. Most instructions are a single program
memory word. Only three instructions require two
program memory locations.
Each single-word instruction is a 24-bit word divided
into an 8-bit opcode, which specifies the instruction
type and one or more operands, which further specify
the operation of the instruction. The instruction set is
highly orthogonal and is grouped into four basic
categories:
•
•
•
•
Word or byte-oriented operations
Bit-oriented operations
Literal operations
Control operations
Table 25-1 shows the general symbols used in
describing the instructions. The PIC24F instruction set
summary in Table 25-2 lists all the instructions, along
with the status flags affected by each instruction.
Most word or byte-oriented W register instructions
(including barrel shift instructions) have three
operands:
• The first source operand which is typically a
register ‘Wb’ without any address modifier
• The second source operand which is typically a
register ‘Ws’ with or without an address modifier
• The destination of the result which is typically a
register ‘Wd’ with or without an address modifier
However, word or byte-oriented file register instructions
have two operands:
• The file register specified by the value, ‘f’
• The destination, which could either be the file
register ‘f’ or the W0 register, which is denoted as
‘WREG’
Most bit-oriented instructions (including simple rotate/
shift instructions) have two operands:
• The W register (with or without an address
modifier) or file register (specified by the value of
‘Ws’ or ‘f’)
• The bit in the W register or file register
(specified by a literal value or indirectly by the
contents of register, ‘Wb’)
 2005-2012 Microchip Technology Inc.
The literal instructions that involve data movement may
use some of the following operands:
• A literal value to be loaded into a W register or file
register (specified by the value of ‘k’)
• The W register or file register where the literal
value is to be loaded (specified by ‘Wb’ or ‘f’)
However, literal instructions that involve arithmetic or
logical operations use some of the following operands:
• The first source operand which is a register, ‘Wb’,
without any address modifier
• The second source operand which is a literal
value
• The destination of the result (only if not the same
as the first source operand) which is typically a
register, ‘Wd’, with or without an address modifier
The control instructions may use some of the following
operands:
• A program memory address
• The mode of the table read and table write
instructions
All instructions are a single word, except for certain
double-word instructions, which were made doubleword instructions so that all of the required information
is available in these 48 bits. In the second word, the
8 MSbs are ‘0’s. If this second word is executed as an
instruction (by itself), it will execute as a NOP.
Most single-word instructions are executed in a single
instruction cycle, unless a conditional test is true or the
Program Counter (PC) is changed as a result of the
instruction. In these cases, the execution takes two
instruction cycles, with the additional instruction
cycle(s) executed as a NOP. Notable exceptions are the
BRA (unconditional/computed branch), indirect CALL/
GOTO, all table reads and writes, and RETURN/RETFIE
instructions, which are single-word instructions but take
two or three cycles.
Certain instructions that involve skipping over the subsequent instruction require either two or three cycles if
the skip is performed, depending on whether the
instruction being skipped is a single-word or two-word
instruction. Moreover, double-word moves require two
cycles. The double-word instructions execute in two
instruction cycles.
DS39747F-page 205
PIC24FJ128GA010 FAMILY
TABLE 25-1:
SYMBOLS USED IN OPCODE DESCRIPTIONS
Field
Description
#text
Means literal defined by “text”
(text)
Means “content of text”
[text]
Means “the location addressed by text”
{ }
Optional field or operation
<n:m>
Register bit field
.b
Byte mode selection
.d
Double-Word mode selection
.S
Shadow register select
.w
Word mode selection (default)
bit4
4-bit bit selection field (used in word addressed instructions) {0...15}
C, DC, N, OV, Z
MCU Status bits: Carry, Digit Carry, Negative, Overflow, Sticky Zero
Expr
Absolute address, label or expression (resolved by the linker)
f
File register address {0000h...1FFFh}
lit1
1-bit unsigned literal {0,1}
lit4
4-bit unsigned literal {0...15}
lit5
5-bit unsigned literal {0...31}
lit8
8-bit unsigned literal {0...255}
lit10
10-bit unsigned literal {0...255} for Byte mode, {0:1023} for Word mode
lit14
14-bit unsigned literal {0...16384}
lit16
16-bit unsigned literal {0...65535}
lit23
23-bit unsigned literal {0...8388608}; LSB must be ‘0’
None
Field does not require an entry, may be blank
PC
Program Counter
Slit10
10-bit signed literal {-512...511}
Slit16
16-bit signed literal {-32768...32767}
Slit6
6-bit signed literal {-16...16}
Wb
Base W register {W0..W15}
Wd
Destination W register { Wd, [Wd], [Wd++], [Wd--], [++Wd], [--Wd] }
Wdo
Destination W register 
{ Wnd, [Wnd], [Wnd++], [Wnd--], [++Wnd], [--Wnd], [Wnd+Wb] }
Wm,Wn
Dividend, Divisor working register pair (Direct Addressing)
Wn
One of 16 working registers {W0..W15}
Wnd
One of 16 destination working registers {W0..W15}
Wns
One of 16 source working registers {W0..W15}
WREG
W0 (working register used in file register instructions)
Ws
Source W register { Ws, [Ws], [Ws++], [Ws--], [++Ws], [--Ws] }
Wso
Source W register 
{ Wns, [Wns], [Wns++], [Wns--], [++Wns], [--Wns], [Wns+Wb] }
DS39747F-page 206
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 25-2:
INSTRUCTION SET OVERVIEW
Assembly
Mnemonic
ADD
ADDC
AND
ASR
BCLR
BRA
BSET
BSW
BTG
BTSC
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
ADD
f
f = f + WREG
1
1
C, DC, N, OV, Z
ADD
f,WREG
WREG = f + WREG
1
1
C, DC, N, OV, Z
ADD
#lit10,Wn
Wd = lit10 + Wd
1
1
C, DC, N, OV, Z
ADD
Wb,Ws,Wd
Wd = Wb + Ws
1
1
C, DC, N, OV, Z
ADD
Wb,#lit5,Wd
Wd = Wb + lit5
1
1
C, DC, N, OV, Z
ADDC
f
f = f + WREG + (C)
1
1
C, DC, N, OV, Z
ADDC
f,WREG
WREG = f + WREG + (C)
1
1
C, DC, N, OV, Z
ADDC
#lit10,Wn
Wd = lit10 + Wd + (C)
1
1
C, DC, N, OV, Z
ADDC
Wb,Ws,Wd
Wd = Wb + Ws + (C)
1
1
C, DC, N, OV, Z
ADDC
Wb,#lit5,Wd
Wd = Wb + lit5 + (C)
1
1
C, DC, N, OV, Z
AND
f
f = f .AND. WREG
1
1
N, Z
AND
f,WREG
WREG = f .AND. WREG
1
1
N, Z
AND
#lit10,Wn
Wd = lit10 .AND. Wd
1
1
N, Z
AND
Wb,Ws,Wd
Wd = Wb .AND. Ws
1
1
N, Z
AND
Wb,#lit5,Wd
Wd = Wb .AND. lit5
1
1
N, Z
ASR
f
f = Arithmetic Right Shift f
1
1
C, N, OV, Z
ASR
f,WREG
WREG = Arithmetic Right Shift f
1
1
C, N, OV, Z
ASR
Ws,Wd
Wd = Arithmetic Right Shift Ws
1
1
C, N, OV, Z
ASR
Wb,Wns,Wnd
Wnd = Arithmetic Right Shift Wb by Wns
1
1
N, Z
ASR
Wb,#lit5,Wnd
Wnd = Arithmetic Right Shift Wb by lit5
1
1
N, Z
BCLR
f,#bit4
Bit Clear f
1
1
None
BCLR
Ws,#bit4
Bit Clear Ws
1
1
None
BRA
C,Expr
Branch if Carry
1
1 (2)
None
BRA
GE,Expr
Branch if Greater than or Equal
1
1 (2)
None
BRA
GEU,Expr
Branch if Unsigned Greater than or Equal
1
1 (2)
None
BRA
GT,Expr
Branch if Greater than
1
1 (2)
None
BRA
GTU,Expr
Branch if Unsigned Greater than
1
1 (2)
None
BRA
LE,Expr
Branch if Less than or Equal
1
1 (2)
None
BRA
LEU,Expr
Branch if Unsigned Less than or Equal
1
1 (2)
None
BRA
LT,Expr
Branch if Less than
1
1 (2)
None
BRA
LTU,Expr
Branch if Unsigned Less than
1
1 (2)
None
BRA
N,Expr
Branch if Negative
1
1 (2)
None
BRA
NC,Expr
Branch if Not Carry
1
1 (2)
None
BRA
NN,Expr
Branch if Not Negative
1
1 (2)
None
BRA
NOV,Expr
Branch if Not Overflow
1
1 (2)
None
BRA
NZ,Expr
Branch if Not Zero
1
1 (2)
None
BRA
OV,Expr
Branch if Overflow
1
1 (2)
None
BRA
Expr
Branch Unconditionally
1
2
None
BRA
Z,Expr
Branch if Zero
1
1 (2)
None
BRA
Wn
Computed Branch
1
2
None
BSET
f,#bit4
Bit Set f
1
1
None
BSET
Ws,#bit4
Bit Set Ws
1
1
None
BSW.C
Ws,Wb
Write C bit to Ws<Wb>
1
1
None
BSW.Z
Ws,Wb
Write Z bit to Ws<Wb>
1
1
None
BTG
f,#bit4
Bit Toggle f
1
1
None
BTG
Ws,#bit4
Bit Toggle Ws
1
1
None
BTSC
f,#bit4
Bit Test f, Skip if Clear
1
1
None
(2 or 3)
BTSC
Ws,#bit4
Bit Test Ws, Skip if Clear
1
1
None
(2 or 3)
 2005-2012 Microchip Technology Inc.
DS39747F-page 207
PIC24FJ128GA010 FAMILY
TABLE 25-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
BTSS
BTST
BTSTS
Assembly Syntax
# of
Words
Description
# of
Cycles
Status Flags
Affected
BTSS
f,#bit4
Bit Test f, Skip if Set
1
1
None
(2 or 3)
BTSS
Ws,#bit4
Bit Test Ws, Skip if Set
1
1
None
(2 or 3)
BTST
f,#bit4
Bit Test f
1
1
Z
BTST.C
Ws,#bit4
Bit Test Ws to C
1
1
C
BTST.Z
Ws,#bit4
Bit Test Ws to Z
1
1
Z
BTST.C
Ws,Wb
Bit Test Ws<Wb> to C
1
1
C
Z
BTST.Z
Ws,Wb
Bit Test Ws<Wb> to Z
1
1
BTSTS
f,#bit4
Bit Test then Set f
1
1
Z
BTSTS.C
Ws,#bit4
Bit Test Ws to C, then Set
1
1
C
BTSTS.Z
Ws,#bit4
Bit Test Ws to Z, then Set
1
1
Z
CALL
CALL
lit23
Call Subroutine
2
2
None
CALL
Wn
Call Indirect Subroutine
1
2
None
CLR
CLR
f
f = 0x0000
1
1
None
CLR
WREG
WREG = 0x0000
1
1
None
CLR
Ws
Ws = 0x0000
1
1
None
Clear Watchdog Timer
1
1
WDTO, Sleep
CLRWDT
CLRWDT
COM
COM
f
f=f
1
1
N, Z
COM
f,WREG
WREG = f
1
1
N, Z
COM
Ws,Wd
Wd = Ws
1
1
N, Z
CP
f
Compare f with WREG
1
1
C, DC, N, OV, Z
CP
Wb,#lit5
Compare Wb with lit5
1
1
C, DC, N, OV, Z
CP
Wb,Ws
Compare Wb with Ws (Wb – Ws)
1
1
C, DC, N, OV, Z
CP0
CP0
f
Compare f with 0x0000
1
1
C, DC, N, OV, Z
CP0
Ws
Compare Ws with 0x0000
1
1
C, DC, N, OV, Z
CPB
CPB
f
Compare f with WREG, with Borrow
1
1
C, DC, N, OV, Z
CPB
Wb,#lit5
Compare Wb with lit5, with Borrow
1
1
C, DC, N, OV, Z
CPB
Wb,Ws
Compare Wb with Ws, with Borrow
(Wb – Ws – C)
1
1
C, DC, N, OV, Z
CPSEQ
CPSEQ
Wb,Wn
Compare Wb with Wn, Skip if =
1
1
None
(2 or 3)
CPSGT
CPSGT
Wb,Wn
Compare Wb with Wn, Skip if >
1
1
None
(2 or 3)
CPSLT
CPSLT
Wb,Wn
Compare Wb with Wn, Skip if <
1
1
None
(2 or 3)
CPSNE
CPSNE
Wb,Wn
Compare Wb with Wn, Skip if 
1
1
None
(2 or 3)
DAW
DAW.B
Wn
Wn = Decimal Adjust Wn
1
1
DEC
DEC
f
f = f –1
1
1
C, DC, N, OV, Z
DEC
f,WREG
WREG = f –1
1
1
C, DC, N, OV, Z
CP
C
DEC
Ws,Wd
Wd = Ws – 1
1
1
C, DC, N, OV, Z
DEC2
f
f=f–2
1
1
C, DC, N, OV, Z
DEC2
f,WREG
WREG = f – 2
1
1
C, DC, N, OV, Z
DEC2
Ws,Wd
Wd = Ws – 2
1
1
C, DC, N, OV, Z
DISI
DISI
#lit14
Disable Interrupts for k Instruction Cycles
1
1
None
DIV
DIV.SW
Wm,Wn
Signed 16/16-Bit Integer Divide
1
18
N, Z, C, OV
DIV.SD
Wm,Wn
Signed 32/16-Bit Integer Divide
1
18
N, Z, C, OV
DIV.UW
Wm,Wn
Unsigned 16/16-Bit Integer Divide
1
18
N, Z, C, OV
DIV.UD
Wm,Wn
Unsigned 32/16-Bit Integer Divide
1
18
N, Z, C, OV
EXCH
EXCH
Wns,Wnd
Swap Wns with Wnd
1
1
None
FF1L
FF1L
Ws,Wnd
Find First One from Left (MSb) Side
1
1
C
FF1R
FF1R
Ws,Wnd
Find First One from Right (LSb) Side
1
1
C
DEC2
DS39747F-page 208
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 25-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
GOTO
INC
INC2
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
GOTO
Expr
Go to Address
2
2
None
GOTO
Wn
Go to Indirect
1
2
None
INC
f
f=f+1
1
1
C, DC, N, OV, Z
INC
f,WREG
WREG = f + 1
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
INC
Ws,Wd
Wd = Ws + 1
1
1
INC2
f
f=f+2
1
1
C, DC, N, OV, Z
INC2
f,WREG
WREG = f + 2
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
INC2
Ws,Wd
Wd = Ws + 2
1
1
IOR
f
f = f .IOR. WREG
1
1
N, Z
IOR
f,WREG
WREG = f .IOR. WREG
1
1
N, Z
IOR
#lit10,Wn
Wd = lit10 .IOR. Wd
1
1
N, Z
IOR
Wb,Ws,Wd
Wd = Wb .IOR. Ws
1
1
N, Z
IOR
Wb,#lit5,Wd
Wd = Wb .IOR. lit5
1
1
N, Z
LNK
LNK
#lit14
Link Frame Pointer
1
1
None
LSR
LSR
f
f = Logical Right Shift f
1
1
C, N, OV, Z
LSR
f,WREG
WREG = Logical Right Shift f
1
1
C, N, OV, Z
LSR
Ws,Wd
Wd = Logical Right Shift Ws
1
1
C, N, OV, Z
LSR
Wb,Wns,Wnd
Wnd = Logical Right Shift Wb by Wns
1
1
N, Z
LSR
Wb,#lit5,Wnd
Wnd = Logical Right Shift Wb by lit5
1
1
N, Z
MOV
f,Wn
Move f to Wn
1
1
None
MOV
[Wns+Slit10],Wnd
Move [Wns+Slit10] to Wnd
1
1
None
MOV
f
Move f to f
1
1
N, Z
MOV
f,WREG
Move f to WREG
1
1
N, Z
MOV
#lit16,Wn
Move 16-Bit Literal to Wn
1
1
None
MOV.b
#lit8,Wn
Move 8-Bit Literal to Wn
1
1
None
MOV
Wn,f
Move Wn to f
1
1
None
MOV
Wns,[Wns+Slit10]
Move Wns to [Wns+Slit10]
1
1
MOV
Wso,Wdo
Move Ws to Wd
1
1
None
MOV
WREG,f
Move WREG to f
1
1
N, Z
MOV.D
Wns,Wd
Move Double from W(ns):W(ns+1) to Wd
1
2
None
MOV.D
Ws,Wnd
Move Double from Ws to W(nd+1):W(nd)
1
2
None
MUL.SS
Wb,Ws,Wnd
{Wnd+1, Wnd} = Signed(Wb) * Signed(Ws)
1
1
None
MUL.SU
Wb,Ws,Wnd
{Wnd+1, Wnd} = Signed(Wb) * Unsigned(Ws)
1
1
None
MUL.US
Wb,Ws,Wnd
{Wnd+1, Wnd} = Unsigned(Wb) * Signed(Ws)
1
1
None
MUL.UU
Wb,Ws,Wnd
{Wnd+1, Wnd} = Unsigned(Wb) * Unsigned(Ws)
1
1
None
MUL.SU
Wb,#lit5,Wnd
{Wnd+1, Wnd} = Signed(Wb) * Unsigned(lit5)
1
1
None
MUL.UU
Wb,#lit5,Wnd
{Wnd+1, Wnd} = Unsigned(Wb) * Unsigned(lit5)
1
1
None
MUL
f
W3:W2 = f * WREG
1
1
None
NEG
f
f=f+1
1
1
C, DC, N, OV, Z
NEG
f,WREG
WREG = f + 1
1
1
C, DC, N, OV, Z
NEG
Ws,Wd
Wd = Ws + 1
1
1
C, DC, N, OV, Z
NOP
No Operation
1
1
None
NOPR
No Operation
1
1
None
IOR
MOV
MUL
NEG
NOP
POP
POP
f
Pop f from Top-of-Stack (TOS)
1
1
None
POP
Wdo
Pop from Top-of-Stack (TOS) to Wdo
1
1
None
POP.D
Wnd
Pop from Top-of-Stack (TOS) to W(nd):W(nd+1)
1
2
None
Pop Shadow Registers
1
1
All
POP.S
PUSH
PUSH
f
Push f to Top-of-Stack (TOS)
1
1
None
PUSH
Wso
Push Wso to Top-of-Stack (TOS)
1
1
None
PUSH.D
Wns
Push W(ns):W(ns+1) to Top-of-Stack (TOS)
1
2
None
Push Shadow Registers
1
1
None
PUSH.S
 2005-2012 Microchip Technology Inc.
DS39747F-page 209
PIC24FJ128GA010 FAMILY
TABLE 25-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
PWRSAV
PWRSAV
#lit1
Go into Sleep or Idle mode
1
1
WDTO, Sleep
RCALL
RCALL
Expr
Relative Call
1
2
None
RCALL
Wn
Computed Call
1
2
None
REPEAT
REPEAT
#lit14
Repeat Next Instruction lit14 + 1 times
1
1
None
REPEAT
Wn
Repeat Next Instruction (Wn) + 1 times
1
1
None
RESET
RESET
Software Device Reset
1
1
None
RETFIE
RETFIE
Return from Interrupt
1
3 (2)
None
RETLW
RETLW
Return with Literal in Wn
1
3 (2)
None
RETURN
RETURN
Return from Subroutine
1
3 (2)
None
RLC
RLC
f
f = Rotate Left through Carry f
1
1
C, N, Z
RLC
f,WREG
WREG = Rotate Left through Carry f
1
1
C, N, Z
C, N, Z
RLNC
RRC
RRNC
#lit10,Wn
RLC
Ws,Wd
Wd = Rotate Left through Carry Ws
1
1
RLNC
f
f = Rotate Left (No Carry) f
1
1
N, Z
RLNC
f,WREG
WREG = Rotate Left (No Carry) f
1
1
N, Z
N, Z
RLNC
Ws,Wd
Wd = Rotate Left (No Carry) Ws
1
1
RRC
f
f = Rotate Right through Carry f
1
1
C, N, Z
RRC
f,WREG
WREG = Rotate Right through Carry f
1
1
C, N, Z
RRC
Ws,Wd
Wd = Rotate Right through Carry Ws
1
1
C, N, Z
RRNC
f
f = Rotate Right (No Carry) f
1
1
N, Z
RRNC
f,WREG
WREG = Rotate Right (No Carry) f
1
1
N, Z
RRNC
Ws,Wd
Wd = Rotate Right (No Carry) Ws
1
1
N, Z
SE
SE
Ws,Wnd
Wnd = Sign-Extended Ws
1
1
C, N, Z
SETM
SETM
f
f = FFFFh
1
1
None
SETM
WREG
WREG = FFFFh
1
1
None
SETM
Ws
Ws = FFFFh
1
1
None
SL
f
f = Left Shift f
1
1
C, N, OV, Z
SL
f,WREG
WREG = Left Shift f
1
1
C, N, OV, Z
SL
Ws,Wd
Wd = Left Shift Ws
1
1
C, N, OV, Z
SL
Wb,Wns,Wnd
Wnd = Left Shift Wb by Wns
1
1
N, Z
SL
Wb,#lit5,Wnd
Wnd = Left Shift Wb by lit5
1
1
N, Z
SUB
f
f = f – WREG
1
1
C, DC, N, OV, Z
SUB
f,WREG
WREG = f – WREG
1
1
C, DC, N, OV, Z
SUB
#lit10,Wn
Wn = Wn – lit10
1
1
C, DC, N, OV, Z
SUB
Wb,Ws,Wd
Wd = Wb – Ws
1
1
C, DC, N, OV, Z
SUB
Wb,#lit5,Wd
Wd = Wb – lit5
1
1
C, DC, N, OV, Z
SUBB
f
f = f – WREG – (C)
1
1
C, DC, N, OV, Z
SL
SUB
SUBB
SUBR
SUBBR
SWAP
TBLRDH
SUBB
f,WREG
WREG = f – WREG – (C)
1
1
C, DC, N, OV, Z
SUBB
#lit10,Wn
Wn = Wn – lit10 – (C)
1
1
C, DC, N, OV, Z
SUBB
Wb,Ws,Wd
Wd = Wb – Ws – (C)
1
1
C, DC, N, OV, Z
SUBB
Wb,#lit5,Wd
Wd = Wb – lit5 – (C)
1
1
C, DC, N, OV, Z
SUBR
f
f = WREG – f
1
1
C, DC, N, OV, Z
SUBR
f,WREG
WREG = WREG – f
1
1
C, DC, N, OV, Z
SUBR
Wb,Ws,Wd
Wd = Ws – Wb
1
1
C, DC, N, OV, Z
SUBR
Wb,#lit5,Wd
Wd = lit5 – Wb
1
1
C, DC, N, OV, Z
SUBBR
f
f = WREG – f – (C)
1
1
C, DC, N, OV, Z
SUBBR
f,WREG
WREG = WREG – f – (C)
1
1
C, DC, N, OV, Z
SUBBR
Wb,Ws,Wd
Wd = Ws – Wb – (C)
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
SUBBR
Wb,#lit5,Wd
Wd = lit5 – Wb – (C)
1
1
SWAP.b
Wn
Wn = Nibble Swap Wn
1
1
None
SWAP
Wn
Wn = Byte Swap Wn
1
1
None
TBLRDH
Ws,Wd
Read Prog<23:16> to Wd<7:0>
1
2
None
DS39747F-page 210
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 25-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
TBLRDL
TBLRDL
Ws,Wd
Read Prog<15:0> to Wd
1
2
None
TBLWTH
TBLWTH
Ws,Wd
Write Ws<7:0> to Prog<23:16>
1
2
None
TBLWTL
TBLWTL
Ws,Wd
Write Ws to Prog<15:0>
1
2
None
ULNK
ULNK
Unlink Frame Pointer
1
1
None
XOR
XOR
f
f = f .XOR. WREG
1
1
N, Z
XOR
f,WREG
WREG = f .XOR. WREG
1
1
N, Z
XOR
#lit10,Wn
Wd = lit10 .XOR. Wd
1
1
N, Z
XOR
Wb,Ws,Wd
Wd = Wb .XOR. Ws
1
1
N, Z
XOR
Wb,#lit5,Wd
Wd = Wb .XOR. lit5
1
1
N, Z
ZE
Ws,Wnd
Wnd = Zero-Extend Ws
1
1
C, Z, N
ZE
 2005-2012 Microchip Technology Inc.
DS39747F-page 211
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 212
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
26.0
DEVELOPMENT SUPPORT
The PIC® microcontrollers and dsPIC® digital signal
controllers are supported with a full range of software
and hardware development tools:
• Integrated Development Environment
- MPLAB® IDE Software
• Compilers/Assemblers/Linkers
- MPLAB C Compiler for Various Device
Families
- HI-TECH C® for Various Device Families
- MPASMTM Assembler
- MPLINKTM Object Linker/
MPLIBTM Object Librarian
- MPLAB Assembler/Linker/Librarian for
Various Device Families
• Simulators
- MPLAB SIM Software Simulator
• Emulators
- MPLAB REAL ICE™ In-Circuit Emulator
• In-Circuit Debuggers
- MPLAB ICD 3
- PICkit™ 3 Debug Express
• Device Programmers
- PICkit™ 2 Programmer
- MPLAB PM3 Device Programmer
• Low-Cost Demonstration/Development Boards,
Evaluation Kits, and Starter Kits
26.1
MPLAB Integrated Development
Environment Software
The MPLAB IDE software brings an ease of software
development previously unseen in the 8/16/32-bit
microcontroller market. The MPLAB IDE is a Windows®
operating system-based application that contains:
• A single graphical interface to all debugging tools
- Simulator
- Programmer (sold separately)
- In-Circuit Emulator (sold separately)
- In-Circuit Debugger (sold separately)
• A full-featured editor with color-coded context
• A multiple project manager
• Customizable data windows with direct edit of
contents
• High-level source code debugging
• Mouse over variable inspection
• Drag and drop variables from source to watch
windows
• Extensive on-line help
• Integration of select third party tools, such as
IAR C Compilers
The MPLAB IDE allows you to:
• Edit your source files (either C or assembly)
• One-touch compile or assemble, and download to
emulator and simulator tools (automatically
updates all project information)
• Debug using:
- Source files (C or assembly)
- Mixed C and assembly
- Machine code
MPLAB IDE supports multiple debugging tools in a
single development paradigm, from the cost-effective
simulators, through low-cost in-circuit debuggers, to
full-featured emulators. This eliminates the learning
curve when upgrading to tools with increased flexibility
and power.
 2005-2012 Microchip Technology Inc.
DS39747F-page 213
PIC24FJ128GA010 FAMILY
26.2
MPLAB C Compilers for Various
Device Families
The MPLAB C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC18,
PIC24 and PIC32 families of microcontrollers and the
dsPIC30 and dsPIC33 families of digital signal controllers. These compilers provide powerful integration
capabilities, superior code optimization and ease of
use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
26.3
HI-TECH C for Various Device
Families
The HI-TECH C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC
family of microcontrollers and the dsPIC family of digital
signal controllers. These compilers provide powerful
integration capabilities, omniscient code generation
and ease of use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
The compilers include a macro assembler, linker, preprocessor, and one-step driver, and can run on multiple
platforms.
26.4
MPASM Assembler
The MPASM Assembler is a full-featured, universal
macro assembler for PIC10/12/16/18 MCUs.
The MPASM Assembler generates relocatable object
files for the MPLINK Object Linker, Intel® standard HEX
files, MAP files to detail memory usage and symbol
reference, absolute LST files that contain source lines
and generated machine code and COFF files for
debugging.
The MPASM Assembler features include:
26.5
MPLINK Object Linker/
MPLIB Object Librarian
The MPLINK Object Linker combines relocatable
objects created by the MPASM Assembler and the
MPLAB C18 C Compiler. It can link relocatable objects
from precompiled libraries, using directives from a
linker script.
The MPLIB Object Librarian manages the creation and
modification of library files of precompiled code. When
a routine from a library is called from a source file, only
the modules that contain that routine will be linked in
with the application. This allows large libraries to be
used efficiently in many different applications.
The object linker/library features include:
• Efficient linking of single libraries instead of many
smaller files
• Enhanced code maintainability by grouping
related modules together
• Flexible creation of libraries with easy module
listing, replacement, deletion and extraction
26.6
MPLAB Assembler, Linker and
Librarian for Various Device
Families
MPLAB Assembler produces relocatable machine
code from symbolic assembly language for PIC24,
PIC32 and dsPIC devices. MPLAB C Compiler uses
the assembler to produce its object file. The assembler
generates relocatable object files that can then be
archived or linked with other relocatable object files and
archives to create an executable file. Notable features
of the assembler include:
•
•
•
•
•
•
Support for the entire device instruction set
Support for fixed-point and floating-point data
Command line interface
Rich directive set
Flexible macro language
MPLAB IDE compatibility
• Integration into MPLAB IDE projects
• User-defined macros to streamline
assembly code
• Conditional assembly for multi-purpose
source files
• Directives that allow complete control over the
assembly process
DS39747F-page 214
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
26.7
MPLAB SIM Software Simulator
The MPLAB SIM Software Simulator allows code
development in a PC-hosted environment by simulating the PIC MCUs and dsPIC® DSCs on an instruction
level. On any given instruction, the data areas can be
examined or modified and stimuli can be applied from
a comprehensive stimulus controller. Registers can be
logged to files for further run-time analysis. The trace
buffer and logic analyzer display extend the power of
the simulator to record and track program execution,
actions on I/O, most peripherals and internal registers.
The MPLAB SIM Software Simulator fully supports
symbolic debugging using the MPLAB C Compilers,
and the MPASM and MPLAB Assemblers. The software simulator offers the flexibility to develop and
debug code outside of the hardware laboratory environment, making it an excellent, economical software
development tool.
26.8
MPLAB REAL ICE In-Circuit
Emulator System
MPLAB REAL ICE In-Circuit Emulator System is
Microchip’s next generation high-speed emulator for
Microchip Flash DSC and MCU devices. It debugs and
programs PIC® Flash MCUs and dsPIC® Flash DSCs
with the easy-to-use, powerful graphical user interface of
the MPLAB Integrated Development Environment (IDE),
included with each kit.
The emulator is connected to the design engineer’s PC
using a high-speed USB 2.0 interface and is connected
to the target with either a connector compatible with incircuit debugger systems (RJ11) or with the new highspeed, noise tolerant, Low-Voltage Differential Signal
(LVDS) interconnection (CAT5).
The emulator is field upgradable through future firmware
downloads in MPLAB IDE. In upcoming releases of
MPLAB IDE, new devices will be supported, and new
features will be added. MPLAB REAL ICE offers
significant advantages over competitive emulators
including low-cost, full-speed emulation, run-time
variable watches, trace analysis, complex breakpoints, a
ruggedized probe interface and long (up to three meters)
interconnection cables.
 2005-2012 Microchip Technology Inc.
26.9
MPLAB ICD 3 In-Circuit Debugger
System
MPLAB ICD 3 In-Circuit Debugger System is Microchip's most cost effective high-speed hardware
debugger/programmer for Microchip Flash Digital Signal Controller (DSC) and microcontroller (MCU)
devices. It debugs and programs PIC® Flash microcontrollers and dsPIC® DSCs with the powerful, yet easyto-use graphical user interface of MPLAB Integrated
Development Environment (IDE).
The MPLAB ICD 3 In-Circuit Debugger probe is connected to the design engineer’s PC using a high-speed
USB 2.0 interface and is connected to the target with a
connector compatible with the MPLAB ICD 2 or MPLAB
REAL ICE systems (RJ-11). MPLAB ICD 3 supports all
MPLAB ICD 2 headers.
26.10 PICkit 3 In-Circuit Debugger/
Programmer and
PICkit 3 Debug Express
The MPLAB PICkit 3 allows debugging and programming of PIC® and dsPIC® Flash microcontrollers at a
most affordable price point using the powerful graphical
user interface of the MPLAB Integrated Development
Environment (IDE). The MPLAB PICkit 3 is connected
to the design engineer's PC using a full speed USB
interface and can be connected to the target via an
Microchip debug (RJ-11) connector (compatible with
MPLAB ICD 3 and MPLAB REAL ICE). The connector
uses two device I/O pins and the reset line to implement in-circuit debugging and In-Circuit Serial
Programming™.
The PICkit 3 Debug Express include the PICkit 3, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
DS39747F-page 215
PIC24FJ128GA010 FAMILY
26.11 PICkit 2 Development
Programmer/Debugger and
PICkit 2 Debug Express
26.13 Demonstration/Development
Boards, Evaluation Kits, and
Starter Kits
The PICkit™ 2 Development Programmer/Debugger is
a low-cost development tool with an easy to use interface for programming and debugging Microchip’s Flash
families of microcontrollers. The full featured
Windows® programming interface supports baseline
(PIC10F,
PIC12F5xx,
PIC16F5xx),
midrange
(PIC12F6xx, PIC16F), PIC18F, PIC24, dsPIC30,
dsPIC33, and PIC32 families of 8-bit, 16-bit, and 32-bit
microcontrollers, and many Microchip Serial EEPROM
products. With Microchip’s powerful MPLAB Integrated
Development Environment (IDE) the PICkit™ 2
enables in-circuit debugging on most PIC® microcontrollers. In-Circuit-Debugging runs, halts and single
steps the program while the PIC microcontroller is
embedded in the application. When halted at a breakpoint, the file registers can be examined and modified.
A wide variety of demonstration, development and
evaluation boards for various PIC MCUs and dsPIC
DSCs allows quick application development on fully functional systems. Most boards include prototyping areas for
adding custom circuitry and provide application firmware
and source code for examination and modification.
The PICkit 2 Debug Express include the PICkit 2, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
26.12 MPLAB PM3 Device Programmer
The MPLAB PM3 Device Programmer is a universal,
CE compliant device programmer with programmable
voltage verification at VDDMIN and VDDMAX for
maximum reliability. It features a large LCD display
(128 x 64) for menus and error messages and a modular, detachable socket assembly to support various
package types. The ICSP™ cable assembly is included
as a standard item. In Stand-Alone mode, the MPLAB
PM3 Device Programmer can read, verify and program
PIC devices without a PC connection. It can also set
code protection in this mode. The MPLAB PM3
connects to the host PC via an RS-232 or USB cable.
The MPLAB PM3 has high-speed communications and
optimized algorithms for quick programming of large
memory devices and incorporates an MMC card for file
storage and data applications.
DS39747F-page 216
The boards support a variety of features, including LEDs,
temperature sensors, switches, speakers, RS-232
interfaces, LCD displays, potentiometers and additional
EEPROM memory.
The demonstration and development boards can be
used in teaching environments, for prototyping custom
circuits and for learning about various microcontroller
applications.
In addition to the PICDEM™ and dsPICDEM™ demonstration/development board series of circuits, Microchip
has a line of evaluation kits and demonstration software
for analog filter design, KEELOQ® security ICs, CAN,
IrDA®, PowerSmart battery management, SEEVAL®
evaluation system, Sigma-Delta A/D, flow rate sensing,
plus many more.
Also available are starter kits that contain everything
needed to experience the specified device. This usually
includes a single application and debug capability, all
on one board.
Check the Microchip web page (www.microchip.com)
for the complete list of demonstration, development
and evaluation kits.
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
27.0
ELECTRICAL CHARACTERISTICS
This section provides an overview of the PIC24FJ128GA010 electrical characteristics. Additional information will be
provided in future revisions of this document as it becomes available.
Absolute maximum ratings for the PIC24FJ128GA010 are listed below. Exposure to these maximum rating conditions
for extended periods may affect device reliability. Functional operation of the device at these, or any other conditions
above the parameters indicated in the operation listings of this specification, is not implied.
Absolute Maximum Ratings(†)
Ambient temperature under bias.............................................................................................................. .-40°C to +85°C
Storage temperature .............................................................................................................................. -65°C to +150°C
Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +4.0V
Voltage on any combined analog and digital pin and MCLR, with respect to VSS ......................... -0.3V to (VDD + 0.3V)
Voltage on any digital only pin with respect to VSS .................................................................................. -0.3V to +6.0V
Voltage on VDDCORE with respect to VSS ................................................................................................. -0.3V to +2.8V
Maximum current out of VSS pin ...........................................................................................................................300 mA
Maximum current into VDD pin (Note 1)................................................................................................................250 mA
Maximum output current sunk by any I/O pin..........................................................................................................25 mA
Maximum output current sunk by any I/O pin..........................................................................................................25 mA
Maximum output current sourced by any I/O pin ....................................................................................................25 mA
Maximum current sunk by all ports .......................................................................................................................200 mA
Maximum current sourced by all ports (Note 1)....................................................................................................200 mA
Note 1:
Maximum allowable current is a function of device maximum power dissipation (see Table 27-2).
†NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those, or any other conditions above those
indicated in the operation listings of this specification, is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
FIGURE 27-1:
FREQUENCY/VOLTAGE GRAPH
3.00V
Voltage VDDCORE(1)
2.75V
2.75V
2.50V
2.25V
2.00V
32 MHz
16 MHz
Frequency
Note 1: When the voltage regulator is disabled, VDD and VDDCORE must be maintained so that VDDCORE  VDD 3.6V.
 2005-2012 Microchip Technology Inc.
DS39747F-page 217
PIC24FJ128GA010 FAMILY
27.1
DC Characteristics
TABLE 27-1:
OPERATING MIPS vs. VOLTAGE
Max MIPS
VDD Range
(in Volts)
Temp Range
(in °C)
PIC24FJ128GA010 Family
2.0-3.6V
-40°C to +85°C
16
TABLE 27-2:
THERMAL OPERATING CONDITIONS
Rating
Symbol
Min
Typ
Max
Unit
Operating Junction Temperature Range
TJ
-40
—
+125
°C
Operating Ambient Temperature Range
TA
-40
—
+85
°C
PIC24FJ128GA010 Family:
Power Dissipation:
Internal Chip Power Dissipation:
PINT = VDD x (IDD –  IOH)
PD
PINT + PI/O
W
PDMAX
(TJ – TA)/JA
W
I/O Pin Power Dissipation:
PI/O =  ({VDD – VOH} x IOH) +  (VOL x IOL)
Maximum Allowed Power Dissipation
TABLE 27-3:
THERMAL PACKAGING CHARACTERISTICS
Characteristic
Symbol
Typ
Max
Unit
Notes
JA
50
—
°C/W
(Note 1)
Package Thermal Resistance, 12x12x1 mm TQFP
JA
69.4
—
°C/W
(Note 1)
Package Thermal Resistance, 10x10x1 mm TQFP
JA
76.6
—
°C/W
(Note 1)
Package Thermal Resistance, 14x14x1 mm TQFP
Note 1:
Junction to ambient thermal resistance, Theta-JA (JA) numbers are achieved by package simulations.
TABLE 27-4:
DC TEMPERATURE AND VOLTAGE SPECIFICATIONS
DC CHARACTERISTICS
Param
No.
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Min
Typ(1)
Max
Units
VDD
VBOR
—
3.6
V
VDD
VDDCORE
—
3.6
V
Regulator is disabled
2.0
—
2.75
V
Regulator is disabled
Sym
Characteristic
Conditions
Operating Voltage
DC10
Supply Voltage
VDDCORE
DC12
VDR
RAM Data Retention
Voltage(2)
1.5
—
—
V
DC16
VPOR
VDD Start Voltage
to Ensure Internal
Power-on Reset Signal
—
—
VSS
V
DC17
SVDD
VDD Rise Rate
to Ensure Internal
Power-on Reset Signal
0.05
—
—
V/ms
DC18
VBOR
Brown-out Reset
Voltage(3)
1.9
2.2
2.5
V
Note 1:
2:
3:
Regulator is enabled
0-3.3V in 0.1s
0-2.5V in 60 ms
Regulator must be enabled
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
This is the limit to which VDD can be lowered without losing RAM data.
Device will operate normally until Brown-out reset occurs even though VDD may be below VDDMIN.
DS39747F-page 218
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-5:
DC CHARACTERISTICS: OPERATING CURRENT (IDD)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Operating Current (IDD)(2)
DC20
1.6
4.0
mA
-40°C
DC20a
1.6
4.0
mA
+25°C
DC20b
1.6
4.0
mA
+85°C
DC20d
1.6
4.0
mA
-40°C
DC20e
1.6
4.0
mA
+25°C
DC20f
1.6
4.0
mA
+85°C
DC23
6.0
12
mA
-40°C
DC23a
6.0
12
mA
+25°C
DC23b
6.0
12
mA
+85°C
DC23d
6.0
12
mA
-40°C
DC23e
6.0
12
mA
+25°C
DC23f
6.0
12
mA
+85°C
DC24
20
32
mA
-40°C
DC24a
20
32
mA
+25°C
DC24b
20
32
mA
+85°C
DC24d
20
32
mA
-40°C
DC24e
20
32
mA
+25°C
DC24f
20
32
mA
+85°C
DC31
70
150
A
-40°C
DC31a
100
200
A
+25°C
DC31b
200
400
A
+85°C
DC31d
70
150
A
-40°C
DC31e
100
200
A
+25°C
DC31f
200
400
A
+85°C
Note 1:
2:
3:
4:
2.5V(3)
1 MIPS
3.6V(4)
2.5V(3)
4 MIPS
3.6V(4)
2.5V(3)
16 MIPS
3.6V(4)
2.5V(3)
LPRC (31 kHz)
3.6V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The supply current is mainly a function of the operating voltage and frequency. Other factors, such as I/O
pin loading and switching rate, oscillator type, internal code execution pattern and temperature, also have
an impact on the current consumption. The test conditions for all IDD measurements are as follows: OSC1
driven with external square wave from rail-to-rail. All I/O pins are configured as inputs and pulled to VDD.
MCLR = VDD; WDT and FSCM are disabled. CPU, SRAM, program memory and data memory are
operational. No peripheral modules are operating and PMD bits are set.
On-chip voltage regulator is disabled (ENVREG tied to VSS).
On-chip voltage regulator is enabled (ENVREG tied to VDD).
 2005-2012 Microchip Technology Inc.
DS39747F-page 219
PIC24FJ128GA010 FAMILY
TABLE 27-6:
DC CHARACTERISTICS: IDLE CURRENT (IIDLE)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Idle Current (IIDLE): Core Off, Clock On Base Current(2)
DC40
0.7
2
mA
-40°C
DC40a
0.7
2
mA
+25°C
DC40b
0.7
2
mA
+85°C
DC40d
0.7
2
mA
-40°C
DC40e
0.7
2
mA
+25°C
DC40f
0.7
2
mA
+85°C
DC43
2.1
4
mA
-40°C
DC43a
2.1
4
mA
+25°C
DC43b
2.1
4
mA
+85°C
DC43d
2.1
4
mA
-40°C
DC43e
2.1
4
mA
+25°C
DC43f
2.1
4
mA
+85°C
DC47
6.8
8
mA
-40°C
DC47a
6.8
8
mA
+25°C
DC47b
6.8
8
mA
+85°C
DC47c
6.8
8
mA
-40°C
DC47d
6.8
8
mA
+25°C
DC47e
6.8
8
mA
+85°C
DC51
70
150
A
-40°C
DC51a
100
200
A
+25°C
DC51b
150
400
A
+85°C
DC51d
70
150
A
-40°C
DC51e
100
200
A
+25°C
DC51f
150
400
A
+85°C
Note 1:
2:
3:
4:
2.5V(3)
1 MIPS
3.6V(4)
2.5V(3)
4 MIPS
3.6V(4)
2.5V(3)
16 MIPS
3.6V(4)
2.5V(3)
LPRC (31 kHz)
3.6V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
Base IIDLE current is measured with core off, clock on, PMD bits set and all modules turned off.
On-chip voltage regulator is disabled (ENVREG tied to VSS).
On-chip voltage regulator is enabled (ENVREG tied to VDD).
DS39747F-page 220
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-7:
DC CHARACTERISTICS: POWER-DOWN CURRENT (IPD)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Power-Down Current (IPD)(2)
DC60
3
25
A
-40°C
DC60a
3
45
A
+25°C
DC60b
100
600
A
+85°C
DC60f
20
40
A
-40°C
DC60g
27
60
A
+25°C
DC60h
120
600
A
+85°C
2.0V(3)
Base Power-Down Current(5)
3.6V(4)
Module Differential Current
DC61
10
25
A
-40°C
DC61a
10
25
A
+25°C
DC61b
10
25
A
+85°C
DC61f
10
25
A
-40°C
DC61g
10
25
A
+25°C
DC61h
10
25
A
+85°C
DC62
8
15
A
-40°C
DC62a
8
15
A
+25°C
DC62b
8
15
A
+85°C
DC62f
8
15
A
-40°C
DC62g
8
15
A
+25°C
8
15
A
+85°C
DC62h
Note 1:
2:
3:
4:
5:
2.0V(3)
Watchdog Timer Current: IWDT(5)
3.6V(4)
2.0V(3)
RTCC + Timer1 w/32 kHz Crystal:
IRTCC(5)
3.6V(4)
Data in the Typical column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
Base IPD is measured with all peripherals and clocks shut down. All I/Os are configured as inputs and
pulled high. WDT, etc., are all switched off. Unused PMD bits are set. VREGS bit is clear.
On-chip voltage regulator is disabled (ENVREG tied to VSS).
On-chip voltage regulator is enabled (ENVREG tied to VDD).
The  current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
 2005-2012 Microchip Technology Inc.
DS39747F-page 221
PIC24FJ128GA010 FAMILY
TABLE 27-8:
DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Param
No.
Sym
VIL
DI10
Characteristic
Min
Typ(1)
Max
Units
VSS
—
0.2 VDD
V
Input Low Voltage(4)
I/O Pins with ST Buffer
DI11
I/O Pins with TTL Buffer
VSS
—
0.15 VDD
V
DI15
MCLR
VSS
—
0.2 VDD
V
DI16
OSC1 (XT mode)
VSS
—
0.2 VDD
V
DI17
OSC1 (HS mode)
VSS
—
0.2 VDD
V
2
DI18
I/O Pins with I C™ Buffer
VSS
—
0.3 VDD
V
DI19
I/O Pins with SMBus Buffer
VSS
—
0.8
V
I/O Pins with ST Buffer:
with Analog Functions
Digital Only
0.8 VDD
0.8 VDD
—
—
VDD
5.5
V
V
I/O Pins with TTL Buffer:
with Analog Functions,
Digital Only
0.25 VDD + 0.8
0.25 VDD + 0.8
—
—
VDD
5.5
V
V
VIH
DI20
DI21
Conditions
Input High
SMBus enabled
Voltage(4)
DI25
MCLR
0.8 VDD
—
VDD
V
DI26
OSC1 (XT mode)
0.7 VDD
—
VDD
V
DI27
OSC1 (HS mode)
0.7 VDD
—
VDD
V
DI28
I/O Pins with I2C Buffer:
with Analog Functions
Digital Only
0.7 VDD
0.7 VDD
—
—
VDD
5.5
V
V
VDD
5.5
V
V
2.5V  VPIN  VDD
400
A
VDD = 3.3V, VPIN = VSS
DI29
I/O Pins with SMBus Buffer:
with Analog Functions
Digital Only
2.1
2.1
DI30
ICNPU CNxx Pull-up Current
50
250
DI31
IPU
—
—
30
A
VDD = 2.0V
—
—
100
A
VDD = 3.3V
I/O Ports:
with Analog Functions
Digital Only
—
—
50
50
1000
1000
nA
nA
Pin at high-impedance
VSS  VPIN  VDD
VSS  VPIN  5.5V
DI51
Analog Input Pins
—
50
1000
nA
DI55
MCLR
—
50
1000
nA
VSS VPIN VDD
DI56
OSC1
—
50
1000
nA
VSS VPIN VDD,
XT and HS modes
IIL
DI50
Note 1:
2:
3:
4:
Maximum Load Current
for Digital High Detection
w/Internal Pull-up
Input Leakage Current(2,3)
VSS  VPIN  VDD,
Pin at high-impedance
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The leakage current on the MCLR pin is strongly dependent on the applied voltage level. The specified
levels represent normal operating conditions. Higher leakage current may be measured at different input
voltages.
Negative current is defined as current sourced by the pin.
Refer to Table 1-2 for I/O pins buffer types.
DS39747F-page 222
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-9:
DC CHARACTERISTICS: I/O PIN OUTPUT SPECIFICATIONS
DC CHARACTERISTICS
Param
No.
Sym
VOL
Characteristic
I/O Ports
DO16
OSC2/CLKO
DO20
DO26
Note 1:
Min
Typ(1)
Max
Units
—
—
0.4
V
IOL = 8.5 mA, VDD = 3.6V
—
—
0.4
V
IOL = 6.0 mA, VDD = 2.0V
—
—
0.4
V
IOL = 8.5 mA, VDD = 3.6V
—
—
0.4
V
IOL = 6.0 mA, VDD = 2.0V
Conditions
Output Low Voltage
DO10
VOH
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Output High Voltage
I/O Ports
OSC2/CLKO
3.0
—
—
V
IOH = -3.0 mA, VDD = 3.6V
2.4
—
—
V
IOH = -6.0 mA, VDD = 3.6V
1.65
—
—
V
IOH = -1.0 mA, VDD = 2.0V
1.4
—
—
V
IOH = -3.0 mA, VDD = 2.0V
2.4
—
—
V
IOH = -6.0 mA, VDD = 3.6V
1.4
—
—
V
IOH = -3.0 mA, VDD = 2.0V
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
 2005-2012 Microchip Technology Inc.
DS39747F-page 223
PIC24FJ128GA010 FAMILY
TABLE 27-10: DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Param. Symbol
IICL
Characteristic
Min.
Typ(1)
Max.
Units
Conditions
mA
All pins except VDD, VSS,
AVDD, AVSS, MCLR, VCAP,
RB11, SOSCI, SOSCO, D+,
D-, VUSB and VBUS
All pins except VDD, VSS,
AVDD, AVSS, MCLR, VCAP,
RB11, SOSCI, SOSCO, D+,
D-, VUSB and VBUS, and all
5V tolerant pins(4)
Input Low Injection Current
DI60a
0
IICH
—
(2,5)
-5
Input High Injection Current
DI60b
IICT
DI60c
4:
5:
6:
—
+5(3,4,5)
mA
-20(6)
—
+20(6)
mA
Total Input Injection Current
(sum of all I/O and control
pins)
Note 1:
2:
3:
0
Absolute instantaneous sum
of all ± input injection currents from all I/O pins
( | IICL + | IICH | )  IICT
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
Characterized but not tested.
Non-5V tolerant pins VIH source > (VDD + 0.3), 5V tolerant pins VIH source > 5.5V. Characterized but not
tested.
Digital 5V tolerant pins cannot tolerate any “positive” input injection current from input sources > 5.5V.
Injection currents > | 0 | can affect the ADC results by approximately 4-6 counts.
Any number and/or combination of I/O pins not excluded under IICL or IICH conditions are permitted
provided the mathematical “absolute instantaneous” sum of the input injection currents from all pins do not
exceed the specified limit. Characterized but not tested.
DS39747F-page 224
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-11: DC CHARACTERISTICS: PROGRAM MEMORY
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
DC CHARACTERISTICS
Param
No.
Sym
Characteristic
Min
Typ(1)
Max
Units
Conditions
Program Flash Memory
D130
EP
Cell Endurance
100
1K
—
E/W
D131
VPR
VDD for Read
VMIN
—
3.6
V
2.25
—
3.6
V
—
3
—
ms
D132B VPEW VDD for Self-Timed
Erase/Write
D133A TIW
Self-Timed Write Cycle Time
D134
TRETD Characteristic Retention
20
—
—
Year
D135
IDDP
—
10
—
mA
Note 1:
Supply Current During
Programming
-40C to +85C
VMIN = Minimum operating
voltage
Provided no other specifications
are violated
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
TABLE 27-12: INTERNAL VOLTAGE REGULATOR SPECIFICATIONS
Operating Conditions: -40°C < TA < +85°C (unless otherwise stated)
Param
No.
Sym
Characteristics
VRGOUT Regulator Output Voltage
Min
Typ
Max Units
Comments
—
2.5
—
V
CEFC
External Filter Capacitor Value
4.7
10
—
F
Series resistance < 3 Ohm recommended;
< 5 Ohm required.
TVREG
Voltage Regulator Start-up Time
—
500
—
s
ENVREG = VDD
TPWRT Power-up Timer Period
—
64
—
ms
ENVREG = VSS
TBG
—
—
1
ms
Band Gap Reference Start-up Time
 2005-2012 Microchip Technology Inc.
DS39747F-page 225
PIC24FJ128GA010 FAMILY
TABLE 27-13: COMPARATOR SPECIFICATIONS
Operating Conditions: 2.0V < VDD < 3.6V, -40°C < TA < +85°C (unless otherwise stated)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
D300
VIOFF
Input Offset Voltage*
—
10
30
mV
D301
VICM
Input Common Mode Voltage*
0
—
VDD
V
D302
CMRR
Common Mode Rejection
Ratio*
55
—
—
dB
300
TRESP
Response Time*(1)
—
150
400
ns
301
TMC2OV
Comparator Mode Change to
Output Valid*
—
—
10
s
*
Note 1:
Comments
Parameters are characterized but not tested.
Response time is measured with one comparator input at (VDD – 1.5)/2, while the other input transitions
from VSS to VDD.
TABLE 27-14: COMPARATOR VOLTAGE REFERENCE SPECIFICATIONS
Operating Conditions: 2.0V < VDD < 3.6V, -40°C < TA < +85°C (unless otherwise stated)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
VDD/24
—
VDD/32
LSb
VRD310 CVRES
Resolution
VRD311 CVRAA
Absolute Accuracy
—
—
AVDD – 1.5
LSb
VRD312 CVRUR
Unit Resistor Value (R)
—
2k
—

Time(1)
—
—
10
s
VR310
Note 1:
TSET
Settling
Comments
Settling time measured while CVRR = 1 and CVR<3:0> bits transition from ‘0000’ to ‘1111’.
DS39747F-page 226
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
27.2
AC Characteristics and Timing Parameters
The information contained in this section defines the PIC24FJ128GA010 AC characteristics and timing parameters.
TABLE 27-15: TEMPERATURE AND VOLTAGE SPECIFICATIONS – AC
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
Operating voltage VDD range as described in Section 27.1 “DC Characteristics”.
AC CHARACTERISTICS
FIGURE 27-2:
LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS
Load Condition 1 – for all pins except OSC2
Load Condition 2 – for OSC2
VDD/2
CL
Pin
RL
VSS
CL
Pin
RL = 464
CL = 50 pF for all pins except OSC2
15 pF for OSC2 output
VSS
TABLE 27-16: CAPACITIVE LOADING REQUIREMENTS ON OUTPUT PINS
Param
Symbol
No.
Characteristic
Min
Typ(1)
Max
Units
Conditions
DO50
COSC2
OSC2/CLKO Pin
—
—
15
pF
In XT and HS modes when
external clock is used to drive
OSC1
DO56
CIO
All I/O Pins and OSC2
—
—
50
pF
EC mode
DO58
CB
SCLx, SDAx
—
—
400
pF
In I2C™ mode
Note 1:
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
 2005-2012 Microchip Technology Inc.
DS39747F-page 227
PIC24FJ128GA010 FAMILY
FIGURE 27-3:
EXTERNAL CLOCK TIMING
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
OS30
OS30
Q1
Q3
Q2
OSC1
OS20
OS31
OS31
OS25
CLKO
OS40
OS41
TABLE 27-17: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Param
Sym
No.
OS10
Characteristic
FOSC External CLKI Frequency
(external clocks allowed
only in EC mode)
Oscillator Frequency
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
Min
Typ(1)
Max
Units
DC
3
—
—
32
8
MHz
MHz
EC mode
ECPLL mode
3.5
3.5
10
31
—
—
—
—
10
8
32
33
MHz
MHz
MHz
kHz
XT mode
XTPLL mode
HS mode
SOSC
—
—
—
—
Conditions
OS20
TOSC TOSC = 1/FOSC
OS25
TCY
62.5
—
DC
ns
OS30
TosL, External Clock in (OSC1)
TosH High or Low Time
0.45 x TOSC
—
—
ns
EC mode
OS31
TosR, External Clock in (OSC1)
TosF Rise or Fall Time
—
—
20
ns
EC mode
OS40
TckR
CLKO Rise Time(3)
—
6
10
ns
OS41
TckF
CLKO Fall Time(3)
—
6
10
ns
Note 1:
2:
3:
Instruction Cycle Time(2)
See Parameter OS10
for FOSC value
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
Instruction cycle period (TCY) equals two times the input oscillator time base period. All specified values are
based on characterization data for that particular oscillator type under standard operating conditions with
the device executing code. Exceeding these specified limits may result in an unstable oscillator operation
and/or higher than expected current consumption. All devices are tested to operate at “Min.” values with an
external clock applied to the OSC1/CLKI pin. When an external clock input is used, the “Max.” cycle time
limit is “DC” (no clock) for all devices.
Measurements are taken in EC mode. The CLKO signal is measured on the OSC2 pin. CLKO is low for the
Q1-Q2 period (1/2 TCY) and high for the Q3-Q4 period (1/2 TCY).
DS39747F-page 228
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-18: PLL CLOCK TIMING SPECIFICATIONS (VDD = 2.0V TO 3.6V)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
AC CHARACTERISTICS
Param
No.
Characteristic(1)
Sym
Min
Typ(2)
Max
Units
OS50
FPLLI
PLL Input Frequency
Range
3
—
8
MHz
OS51
FSYS
PLL Output Frequency
Range
12
—
32
MHz
OS52
TLOCK PLL Start-up Time
(Lock Time)
—
—
2
ms
OS53
DCLK
-2
1
+2
%
Note 1:
2:
CLKO Stability (Jitter)
Conditions
ECPLL, HSPLL, XTPLL
modes
These parameters are characterized but not tested in manufacturing.
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
TABLE 27-19: INTERNAL RC OSCILLATOR SPECIFICATIONS
AC CHARACTERISTICS
Industrial
Param
No.
Characteristic(1)
Sym
TFRC
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA +85°C for Industrial
FRC Start-up Time
TLPRC LPRC Start-up Time
Note 1:
Min
Typ
Max
Units
—
15
—
µs
—
500
—
µs
Conditions
These parameters are characterized but not tested in manufacturing.
TABLE 27-20: INTERNAL RC OSCILLATOR ACCURACY
AC CHARACTERISTICS
Param
No.
Characteristic
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
Min
Typ
Max
Units
Conditions
-2
—
+2
%
+25°C
VDD = 3.0 - 3.6V
-5
—
+5
%
-40°C  TA +85°C
VDD = 3.0 - 3.6V
-15
—
+15
%
-40°C  TA +85°C
VDD = 3.0 - 3.6V
Internal FRC Accuracy @ 8 MHz(1)
F20
F21
FRC
LPRC @ 31
Note 1:
kHz(1)
Change of LPRC frequency as VDD changes.
 2005-2012 Microchip Technology Inc.
DS39747F-page 229
PIC24FJ128GA010 FAMILY
FIGURE 27-4:
CLKO AND I/O TIMING CHARACTERISTICS
I/O Pin
(Input)
DI35
DI40
I/O Pin
(Output)
New Value
Old Value
DO31
DO32
Note: Refer to Figure 27-2 for load conditions.
TABLE 27-21: CLKO AND I/O TIMING REQUIREMENTS
AC CHARACTERISTICS
Param
No.
Sym
Characteristic
Min
Typ(1)
Max
Units
—
10
25
ns
DO31
TIOR
DO32
TIOF
Port Output Fall Time
—
10
25
ns
DI35
TINP
INTx Pin High or Low
Time (output)
20
—
—
ns
DI40
TRBP
CNx High or Low Time
(input)
2
—
—
TCY
Note 1:
Port Output Rise Time
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Conditions
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
DS39747F-page 230
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
TABLE 27-22: A/D MODULE SPECIFICATIONS
AC CHARACTERISTICS
Param
No.
Symbol
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C
Characteristic
Min.
Typ
Max.
Units
Conditions
Device Supply
AD01
AVDD
Module VDD Supply
Greater of
VDD – 0.3
or 2.0
—
Lesser of
VDD + 0.3
or 3.6
V
AD02
AVSS
Module VSS Supply
VSS – 0.3
—
VSS + 0.3
V
Reference Inputs
AD05
VREFH
Reference Voltage High
AVSS + 1.7
—
AVDD
V
AD06
VREFL
Reference Voltage Low
AVSS
—
AVDD – 1.7
V
AD07
VREF
Absolute Reference
Voltage
AVSS – 0.3
—
AVDD + 0.3
V
AD08
IVREF
Reference Voltage Input
Current
—
—
1.25
mA
AD09
ZVREF
Reference Input
Impedance
—
10K
—

VREFL
VREFH
V
AVSS – 0.3
AVDD + 0.3
V
±0.610
A
AVDD/2
V
Analog Input
AD10
VINH-VINL Full-Scale Input
AD11
VIN
AD12
Span(2)
Absolute Input Voltage
—
Leakage Current
—
AD14
VINL
Absolute VINL Input Voltage
AVSS – 0.3
AD17
RIN
Recommended
Impedance of Analog Voltage
—
±0.001
—
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 5V,
Source Impedance = 2.5 k
2.5K
A/D Accuracy
AD20a Nr
Resolution
AD21a INL
Integral Nonlinearity(2)
—
+1
<±2
LSb
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3V
AD22a DNL
Differential Nonlinearity(2)
—
+0.5
<±1
LSb
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3V
AD23a GERR
Gain Error(2)
—
+1
±3
LSb
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3V
AD24a EOFF
Offset Error(2)
—
+1
±2
LSb
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3V
AD25a
Monotonicity(1)
—
—
—
—
Note 1:
2:
—
10 data bits
bits
Guaranteed
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
Measurements are taken with external VREF+ and VREF- used as the A/D voltage reference.
 2005-2012 Microchip Technology Inc.
DS39747F-page 231
PIC24FJ128GA010 FAMILY
TABLE 27-23: A/D CONVERSION TIMING REQUIREMENTS(1)
AC CHARACTERISTICS
Param
No.
Sym
Characteristic
Standard Operating Conditions: 2.0V to 3.6V (unless
otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
Min
Typ
Max
Units
Conditions
TCY = 75 ns, ADxCON3
is in default state
AD50
TAD
A/D Clock Period
75
—
—
ns
AD51
tRC
A/D Internal RC Oscillator
Period
—
250
—
ns
Conversion Rate
AD55
tCONV Conversion Time
AD56
FCNV
AD57
tSAMP Sample Time
Throughput Rate
AD61
tPSS
—
12
—
TAD
—
—
500
ksps
—
1
—
TAD
3
TAD
AVDD > 2.7V
Clock Parameters
Note 1:
Sample Start Delay from
Setting Sample bit (SAMP)
2
—
Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
DS39747F-page 232
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
28.0
PACKAGING INFORMATION
28.1
Package Marking Information
64-Lead TQFP (10x10x1 mm)
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN
PIC24FJ128
GA006-I/
PT e3
1110017
80-Lead TQFP (12x12x1 mm)
XXXXXXXXXXXX
XXXXXXXXXXXX
YYWWNNN
XXXXXXXXXXXX
XXXXXXXXXXXX
YYWWNNN
*
Note:
Example
PIC24FJ128GA
010-I/PT e3
1110017
100-Lead TQFP (14x14x1 mm)
Legend: XX...X
Y
YY
WW
NNN
Example
PIC24FJ128GA
008-I/PT e3
1110017
100-Lead TQFP (12x12x1 mm)
XXXXXXXXXXXX
XXXXXXXXXXXX
YYWWNNN
Example
Example
PIC24FJ128GA
010-I/PF e3
1110017
Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
 2005-2012 Microchip Technology Inc.
DS39747F-page 233
PIC24FJ128GA010 FAMILY
64-Lead QFN (9x9x0.9 mm)
XXXXXXXXXXX
XXXXXXXXXXX
XXXXXXXXXXX
YYWWNNN
DS39747F-page 234
Example
PIC24FJ128
GA010-I/MR e3
1150017
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
28.2
Package Details
The following sections give the technical details of the packages.
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 2005-2012 Microchip Technology Inc.
DS39747F-page 235
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39747F-page 236
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
80-Lead Plastic Thin Quad Flatpack (PT) – 12x12x1 mm Body, 2.00 mm Footprint [TQFP]
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
D
D1
E
e
E1
N
b
NOTE 1
12 3
α
NOTE 2
A
c
β
φ
A2
A1
L1
L
Units
Dimension Limits
Number of Leads
MILLIMETERS
MIN
N
NOM
MAX
80
Lead Pitch
e
Overall Height
A
–
0.50 BSC
–
Molded Package Thickness
A2
0.95
1.00
1.05
Standoff
A1
0.05
–
0.15
Foot Length
L
0.45
0.60
0.75
Footprint
L1
1.20
1.00 REF
Foot Angle
φ
Overall Width
E
14.00 BSC
Overall Length
D
14.00 BSC
Molded Package Width
E1
12.00 BSC
Molded Package Length
D1
12.00 BSC
0°
3.5°
7°
Lead Thickness
c
0.09
–
0.20
Lead Width
b
0.17
0.22
0.27
Mold Draft Angle Top
α
11°
12°
13°
Mold Draft Angle Bottom
β
11°
12°
13°
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. Chamfers at corners are optional; size may vary.
3. Dimensions D1 and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.25 mm per side.
4. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Microchip Technology Drawing C04-092B
 2005-2012 Microchip Technology Inc.
DS39747F-page 237
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39747F-page 238
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
100-Lead Plastic Thin Quad Flatpack (PT) – 12x12x1 mm Body, 2.00 mm Footprint [TQFP]
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
D
D1
e
E
E1
N
b
NOTE 1
1 23
NOTE 2
α
c
A
φ
L
β
A1
Units
Dimension Limits
Number of Leads
A2
L1
MILLIMETERS
MIN
N
NOM
MAX
100
Lead Pitch
e
Overall Height
A
–
0.40 BSC
–
Molded Package Thickness
A2
0.95
1.00
1.05
Standoff
A1
0.05
–
0.15
Foot Length
L
0.45
0.60
0.75
Footprint
L1
1.20
1.00 REF
Foot Angle
φ
Overall Width
E
14.00 BSC
Overall Length
D
14.00 BSC
Molded Package Width
E1
12.00 BSC
Molded Package Length
D1
12.00 BSC
0°
3.5°
7°
Lead Thickness
c
0.09
–
0.20
Lead Width
b
0.13
0.18
0.23
Mold Draft Angle Top
α
11°
12°
13°
Mold Draft Angle Bottom
β
11°
12°
13°
Notes:
1. Pin 1 visual index feature may vary, but must be located within the hatched area.
2. Chamfers at corners are optional; size may vary.
3. Dimensions D1 and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.25 mm per side.
4. Dimensioning and tolerancing per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes only.
Microchip Technology Drawing C04-100B
 2005-2012 Microchip Technology Inc.
DS39747F-page 239
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39747F-page 240
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
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 2005-2012 Microchip Technology Inc.
DS39747F-page 241
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39747F-page 242
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
 2005-2012 Microchip Technology Inc.
DS39747F-page 243
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39747F-page 244
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
 2005-2012 Microchip Technology Inc.
DS39747F-page 245
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 246
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
APPENDIX A:
REVISION HISTORY
Revision A (September 2005)
Original data sheet for PIC24FJ128GA010 family
devices.
Revision B (March 2006)
Update of electrical specifications.
Revision C (June 2006)
Update of electrical specifications.
Revision D (September 2007)
Minor changes in the overall data sheet
Revision E (October 2009)
Updated to remove Preliminary status.
Revision F (January 2012)
Added Section 2.0 “Guidelines for Getting Started
with 16-bit Microcontrollers”. In Section 28.0
“Packaging Information”, Land Patterns of all the
packaging have been added. Minor edits to text
throughout the document.
 2005-2012 Microchip Technology Inc.
DS39747F-page 247
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 248
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
INDEX
A
C
A/D
Conversion Timing Requirements............................. 232
Module Specifications ............................................... 231
AC
Characteristics .......................................................... 227
Load Conditions ........................................................ 227
Temperature and Voltage Specifications .................. 227
Alternate Interrupt Vector Table (AIVT) .............................. 63
Arithmetic Logic Unit (ALU)................................................. 30
Assembler
MPASM Assembler................................................... 214
B
Block Diagrams
10-Bit High-Speed A/D Converter............................. 180
16-Bit Timer1 Module................................................ 111
8-Bit Multiplexed Address and Data Application ....... 162
Accessing Program Memory with
Table Instructions ............................................... 48
Addressable Parallel Slave Port ............................... 160
Comparator I/O Operating Modes............................. 189
Comparator Voltage Reference ................................ 193
Connections for On-Chip Voltage Regulator............. 201
Device Clock ............................................................... 97
I2C............................................................................. 138
Input Capture ............................................................ 119
LCD Control, Byte Mode ........................................... 162
Legacy Parallel Slave Port........................................ 160
Master Mode, Demultiplexed Addressing ................. 160
Master Mode, Fully Multiplexed Addressing ............. 161
Master Mode, Partially Multiplexed Addressing ........ 161
Multiplexed Addressing Application .......................... 161
Output Compare Module........................................... 121
Parallel EEPROM (Up to 15-Bit Address, 16-Bit Data)...
162
Parallel EEPROM (Up to 15-Bit Address, 8-Bit Data).....
162
Partially Multiplexed Addressing Application ............ 161
PIC24F CPU Core ...................................................... 26
PIC24FJ128GA010 Family (General) ......................... 10
PMP Module ............................................................. 153
Program Space Visibility Operation ............................ 49
Reset System.............................................................. 57
RTCC ........................................................................ 163
Shared Port Structure ............................................... 107
SPI Master, Frame Master Connection..................... 135
SPI Master, Frame Slave Connection....................... 135
SPI Master/Slave Connection (Enhanced
Buffer Modes) ................................................... 134
SPI Master/Slave Connection (Standard Mode) ....... 134
SPI Slave, Frame Master Connection....................... 135
SPI Slave, Frame Slave Connection......................... 135
SPIx Module (Enhanced Mode) ................................ 129
SPIx Module (Standard Mode).................................. 128
Timer2 and Timer4 (16-Bit Synchronous)................. 115
Timer2/3 and Timer4/5 (32-Bit)................................. 114
Timer3 and Timer5 (16-Bit Synchronous)................. 115
UARTx ...................................................................... 145
Watchdog Timer (WDT) ............................................ 202
 2005-2012 Microchip Technology Inc.
C Compilers
MPLAB C18.............................................................. 214
Clock Switching
Enabling.................................................................... 103
Operation.................................................................. 103
Oscillator Sequence ................................................. 103
Code Examples
Basic Code Sequence for Clock Switching .............. 104
Erasing a Program Memory Block.............................. 54
Initiating a Programming Sequence ........................... 55
Loading Write Buffers ................................................. 55
Port Write/Read ........................................................ 108
Programming a Single Word of Flash
Program Memory................................................ 56
PWRSAV Instruction Syntax .................................... 105
Comparator Module .......................................................... 189
Comparator Voltage Reference ........................................ 193
Configuring ............................................................... 193
Configuration Bits ............................................................. 195
Configuration Register Protection..................................... 203
Core Features....................................................................... 7
16-Bit Architecture ........................................................ 7
Easy Migration.............................................................. 8
Oscillator Options, Features ......................................... 7
PIC24FJ128GA010 Family Devices ............................. 9
Power-Saving Technology............................................ 7
CPU .................................................................................... 25
Control Registers........................................................ 28
Programmer’s Model .................................................. 27
CPU Clocking Scheme ....................................................... 98
CRC
Example Setup ......................................................... 175
Operation in Power Save Modes.............................. 177
Overview................................................................... 175
Registers .................................................................. 175
User Interface ........................................................... 176
Customer Change Notification Service............................. 253
Customer Notification Service .......................................... 253
Customer Support............................................................. 253
CVRR
CVrsrc....................................................................... 193
D
Data Memory
Address Space ........................................................... 33
Width .................................................................. 33
Memory Map for PIC24F128GA010
Family Devices ................................................... 33
Near Data Space ........................................................ 34
Organization and Alignment ....................................... 34
SFR Space ................................................................. 34
Software Stack ........................................................... 46
DS39747F-page 249
PIC24FJ128GA010 FAMILY
DC Characteristics ............................................................ 218
Comparator Voltage Reference
Specifications.................................................... 226
I/O Pin Input Specifications ............................... 222, 224
I/O Pin Output Specifications .................................... 223
Idle Current (IIDLE) .................................................... 220
Operating Current (IDD)............................................. 219
Operating MIPS vs. Voltage...................................... 218
Power-Down Current (IPD) ........................................ 221
Program Memory ...................................................... 225
Temperature and Voltage Specifications .................. 218
Thermal Operating Conditions .................................. 218
Thermal Packaging ................................................... 218
Development Support ....................................................... 213
E
Electrical Characteristics................................................... 217
Absolute Maximum Ratings ...................................... 217
ENVREG Pin..................................................................... 201
Equations
A/D Conversion Clock Period ................................... 186
Calculating the PWM Period ..................................... 123
Calculation for Maximum PWM Resolution............... 123
CRC Polynomial........................................................ 175
Relationship Between Device and SPI
Clock Speed...................................................... 136
UARTx Baud Rate with BRGH = 0............................ 146
UARTx Baud Rate with BRGH = 1............................ 146
Errata .................................................................................... 6
Examples
Baud Rate Error Calculation (BRGH = 0) ................. 146
PWM Period and Duty Cycle Calculations ................ 124
Setting RTCWREN Bit in MPLAB C30...................... 164
F
Flash Configuration Words.......................................... 32, 195
Flash Program Memory....................................................... 51
Control Registers ........................................................ 52
Enhanced ICSP .......................................................... 52
JTAG Operation .......................................................... 52
Operations .................................................................. 52
Programming a Single Word ....................................... 56
Programming Algorithm .............................................. 54
RTSP Operation.......................................................... 52
Table Instructions........................................................ 51
FSCM
and Device Resets ...................................................... 61
Delay for Crystal and PLL Clock Sources ................... 61
I
I/O Ports ............................................................................ 107
Configuring Analog Pins ........................................... 108
Voltage Considerations..................................... 108
Input Change Notification.......................................... 109
Open-Drain Configuration ......................................... 108
Parallel I/O (PIO)....................................................... 107
Write/Read Timing .................................................... 108
I2C
Clock Rates............................................................... 139
Communicating as Master in a Single
Master Environment.......................................... 137
Setting Baud Rate When Operating as
Bus Master........................................................ 139
Slave Address Masking ............................................ 139
Implemented Interrupt Vectors (table)................................. 65
DS39747F-page 250
In-Circuit Debugger........................................................... 203
In-Circuit Serial Programming (ICSP)............................... 203
Input Capture .................................................................... 119
Registers .................................................................. 120
Instruction Set
Overview................................................................... 207
Summary .................................................................. 205
Inter-Integrated Circuit (I2C) ............................................. 137
Internal RC Oscillator
Use with WDT........................................................... 202
Internet Address ............................................................... 253
Interrupt
Setup Procedures
Initialization......................................................... 96
Interrupt Control and Status Registers ............................... 66
IECx ............................................................................ 66
IFSx ............................................................................ 66
INTCON1, INTCON2 .................................................. 66
IPCx ............................................................................ 66
Interrupt Controller.............................................................. 63
Interrupt Vector Table (IVT) ................................................ 63
Interrupts
Setup Procedure,
Interrupt Disable ................................................. 96
Setup Procedures ....................................................... 96
Interrupt Service Routine (ISR) .......................... 96
Trap Service Routine (TSR) ............................... 96
M
Memory Organization ......................................................... 31
Microchip Internet Web Site.............................................. 253
MPLAB ASM30 Assembler, Linker, Librarian ................... 214
MPLAB Integrated Development
Environment Software .............................................. 213
MPLAB PM3 Device Programmer .................................... 216
MPLAB REAL ICE In-Circuit Emulator System ................ 215
MPLINK Object Linker/MPLIB Object Librarian ................ 214
O
On-Chip Voltage Regulator............................................... 201
Brown-out Reset (BOR)............................................ 201
Power-on Reset (POR)............................................. 201
Power-up Requirements ........................................... 201
Oscillator Configuration ...................................................... 97
Clock Switching Mode Configuration Bits ................... 98
Control Registers ........................................................ 99
CLKDIV............................................................... 99
OSCCON............................................................ 99
OSCTUN ............................................................ 99
Output Compare ............................................................... 121
Continuous Output Pulse Generation Setup............. 122
Modes of Operation .................................................. 121
Pulse-Width Modulation.................................... 123
Pulse-Width Modulation
Duty Cycle ........................................................ 123
PWM Period ..................................................... 123
Single Output Pulse Generation Setup..................... 121
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
P
Packaging ......................................................................... 233
Details ....................................................................... 235
Marking ..................................................................... 233
Parallel Master Port (PMP) ............................................... 153
PIC24FJ128GA010 Family
Pinout Descriptions ..................................................... 11
Pin Diagrams ........................................................................ 2
POR and Long Oscillator Start-up Times............................ 61
Power-Saving Features .................................................... 105
Clock Switching, Clock Frequency............................ 105
Doze Modes.............................................................. 106
Instruction-Based Modes .......................................... 105
Idle .................................................................... 106
Sleep................................................................. 105
Interrupts, Coincident with Power-Save
Instructions ....................................................... 106
Selective Peripheral Control ..................................... 106
Program Address Space ..................................................... 31
Memory Map for PIC24FJ128GA010
Family Devices ................................................... 31
Program and Data Memory Spaces
Interfacing ................................................................... 46
Program Memory
Data Access Using Table Instructions ........................ 48
Hard Memory Vectors ................................................. 32
Interrupt Vector ........................................................... 32
Organization................................................................ 32
Reading Data Using Program Space Visibility............ 49
Reset Vector ............................................................... 32
Table Instructions
TBLRDH ............................................................. 48
TBLRDL .............................................................. 48
Program Space
Address Construction.................................................. 47
Addressing .................................................................. 46
Data Access from, Address Generation...................... 47
Program Verification and Code Protection........................ 203
Programmer’s Model........................................................... 25
R
Reader Response ............................................................. 254
Register Maps
A/D .............................................................................. 41
CRC ............................................................................ 45
Dual Comparator......................................................... 44
I2C1 ............................................................................ 39
I2C2 ............................................................................ 39
ICN.............................................................................. 37
Input Capture .............................................................. 38
Interrupt Controller ...................................................... 36
NVM ............................................................................ 45
Output Compare ......................................................... 38
Pad Configuration ....................................................... 43
Parallel Master/Slave Port .......................................... 44
PMD ............................................................................ 45
PORTA........................................................................ 41
PORTB........................................................................ 42
PORTC ....................................................................... 42
PORTD ....................................................................... 42
PORTE........................................................................ 43
PORTF........................................................................ 43
PORTG ....................................................................... 43
Real-Time Clock and Calendar (RTCC) ..................... 44
SPI1 ............................................................................ 40
 2005-2012 Microchip Technology Inc.
SPI2............................................................................ 40
System........................................................................ 45
Timer .......................................................................... 37
UART1........................................................................ 40
UART2........................................................................ 40
Registers
AD1CHS (A/D Input Select)...................................... 184
AD1CON1 (A/D Control 1)........................................ 181
AD1CON2 (A/D Control 2)........................................ 182
AD1CON3 (A/D Control 3)........................................ 183
AD1CSSL (A/D Input Scan Select)........................... 185
AD1PCFG (A/D Port Configuration) ......................... 185
ALCFGRPT (Alarm Configuration) ........................... 167
ALMINSEC (Alarm Minutes and
Seconds Value) ................................................ 171
ALMTHDY (Alarm Month and Day Value) ................ 170
ALWDHR (Alarm Weekday and Hours Value) ......... 170
CLKDIV (Clock Divider) ............................................ 101
CMCON (Comparator Control) ................................. 190
CORCON (Core Control) ...................................... 29, 67
CRCCON (CRC Control) .......................................... 177
CVRCON (Comparator Voltage
Reference Control) ........................................... 194
DEVID (Device ID).................................................... 199
DEVREV (Device Revision)...................................... 200
Flash Configuration Word 1...................................... 196
Flash Configuration Word 2...................................... 198
I2CxCON (I2Cx Control)........................................... 140
I2CxMSK (I2Cx Slave Mode Address Mask)............ 144
I2CxSTAT (I2Cx Status) ........................................... 142
ICxCON (Input Capture x Control)............................ 120
IEC0 (Interrupt Enable Control 0) ............................... 75
IEC1 (Interrupt Enable Control 1) ............................... 76
IEC2 (Interrupt Enable Control 2) ............................... 77
IEC3 (Interrupt Enable Control 3) ............................... 78
IEC4 (Interrupt Enable Control 4) ............................... 79
IFS0 (Interrupt Flag Status 0) ..................................... 70
IFS1 (Interrupt Flag Status 1) ..................................... 71
IFS2 (Interrupt Flag Status 2) ..................................... 72
IFS3 (Interrupt Flag Status 3) ..................................... 73
IFS4 (Interrupt Flag Status 4) ..................................... 74
INTCON1 (Interrupt Control 1) ................................... 68
INTCON2 (Interrupt Control 2) ................................... 69
INTTREG (Interrupt Control and Status) .................... 95
IPC0 (Interrupt Priority Control 0) ............................... 80
IPC1 (Interrupt Priority Control 1) ............................... 81
IPC10 (Interrupt Priority Control 10) ........................... 90
IPC11 (Interrupt Priority Control 11) ........................... 90
IPC12 (Interrupt Priority Control 12) ........................... 91
IPC13 (Interrupt Priority Control 13) ........................... 92
IPC15 (Interrupt Priority Control 15) ........................... 93
IPC16 (Interrupt Priority Control 16) ........................... 94
IPC2 (Interrupt Priority Control 2) ............................... 82
IPC3 (Interrupt Priority Control 3) ............................... 83
IPC4 (Interrupt Priority Control 4) ............................... 84
IPC5 (Interrupt Priority Control 5) ............................... 85
IPC6 (Interrupt Priority Control 6) ............................... 86
IPC7 (Interrupt Priority Control 7) ............................... 87
IPC8 (Interrupt Priority Control 8) ............................... 88
IPC9 (Interrupt Priority Control 9) ............................... 89
MINSEC (Minutes and Seconds Value) ................... 169
MTHDY (Month and Day Value)............................... 168
NVMCON (Flash Memory Control)............................. 53
OCxCON Output Compare x Control) ...................... 125
OSCCON (Oscillator Control)..................................... 99
DS39747F-page 251
PIC24FJ128GA010 FAMILY
OSCTUN (FRC Oscillator Tune) ............................... 102
PADCFG1 (Pad Configuration Control) .................... 166
PMADDR (Parallel Port Address) ............................. 157
PMAEN (Parallel Port Enable) .................................. 157
PMCON (Parallel Port Control) ................................. 154
PMMODE (Parallel Port Mode) ................................. 156
PMSTAT (Parallel Port Status) ................................. 158
RCFGCAL (RTCC Calibration
and Configuration) ............................................ 165
RCON (Reset Control) ................................................ 58
SPIxCON1 (SPIx Control 1) ...................................... 132
SPIxCON2 (SPIx Control 2) ...................................... 133
SPIxSTAT (SPIx Status and Control) ....................... 130
SR (CPU STATUS) ............................................... 28, 67
T1CON (Timer1 Control)........................................... 112
TxCON (Timer2/4 Control) ........................................ 116
TyCON (Timer3/5 Control) ........................................ 117
UxMODE (UARTx Mode) .......................................... 148
UxSTA (UARTx Status and Control) ......................... 150
WKDYHR (Weekday and Hours Value) .................... 169
YEAR (Year Value) ................................................... 168
Registers Map
CPU Core.................................................................... 35
Reset Sequence.................................................................. 63
Resets ................................................................................. 57
Clock Source Selection ............................................... 59
Device Times .............................................................. 59
Revision History ................................................................ 247
RTCC
Alarm......................................................................... 172
Configuring........................................................ 172
Interrupt............................................................. 172
ALRMVAL Register Mappings .................................. 170
Calibration ................................................................. 172
Control Registers ...................................................... 165
Module Registers ...................................................... 164
Mapping ............................................................ 164
RTCVAL Register Mapping....................................... 168
S
Serial Peripheral Interface (SPI) ....................................... 127
Software Simulator (MPLAB SIM)..................................... 215
Software Stack Pointer, Frame Pointer
CALL Stack Frame...................................................... 46
Special Features ............................................................... 195
Code Protection ........................................................ 195
Flexible Configuration ............................................... 195
In-Circuit Emulation................................................... 195
In-Circuit Serial Programming (ICSP) ....................... 195
JTAG Boundary Scan Interface ................................ 195
Watchdog Timer (WDT) ............................................ 195
Special Function Register Reset States.............................. 61
Symbols Used in Opcode Descriptions............................. 206
DS39747F-page 252
T
Table of Contents ................................................................. 5
Timer1 Module.................................................................. 111
Timer2/3 Module............................................................... 113
Timer4/5 Module............................................................... 113
Timing Diagrams
CLKO and I/O ........................................................... 230
External Clock........................................................... 228
Timing Requirements
Capacitive Loading on Output Pin ............................ 227
CLKO and I/O ........................................................... 230
External Clock........................................................... 228
Timing Specifications
Internal RC Oscillator................................................ 229
Internal RC Oscillator Accuracy................................ 229
PLL Clock ................................................................. 229
U
UARTx
Baud Rate Generator (BRG) .................................... 146
Break and Sync Transmit Sequence ........................ 147
Infrared Support........................................................ 147
IrDA
Built-in Encoder and Decoder........................... 147
External Support, Clock Output ........................ 147
Operation of UxCTS and UxRTS Control Pins ......... 147
Receiving in
8-Bit or 9-Bit Data Mode ................................... 147
Transmitting
8-Bit Data Mode................................................ 147
Transmitting in
9-Bit Data Mode................................................ 147
Universal Asynchronous Receiver Transmitter (UART) ... 145
V
VDDCORE/VCAP Pin ........................................................... 201
W
Watchdog Timer (WDT).................................................... 202
Control Register........................................................ 202
Programming Considerations ................................... 202
WWW Address ................................................................. 253
WWW, On-Line Support ....................................................... 6
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
THE MICROCHIP WEB SITE
CUSTOMER SUPPORT
Microchip provides online support via our WWW site at
www.microchip.com. This web site is used as a means
to make files and information easily available to
customers. Accessible by using your favorite Internet
browser, the web site contains the following
information:
Users of Microchip products can receive assistance
through several channels:
• Product Support – Data sheets and errata,
application notes and sample programs, design
resources, user’s guides and hardware support
documents, latest software releases and archived
software
• General Technical Support – Frequently Asked
Questions (FAQ), technical support requests,
online discussion groups, Microchip consultant
program member listing
• Business of Microchip – Product selector and
ordering guides, latest Microchip press releases,
listing of seminars and events, listings of
Microchip sales offices, distributors and factory
representatives
•
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Development Systems Information Line
Customers
should
contact
their
distributor,
representative or field application engineer (FAE) for
support. Local sales offices are also available to help
customers. A listing of sales offices and locations is
included in the back of this document.
Technical support is available through the web site
at: http://microchip.com/support
CUSTOMER CHANGE NOTIFICATION
SERVICE
Microchip’s customer notification service helps keep
customers current on Microchip products. Subscribers
will receive e-mail notification whenever there are
changes, updates, revisions or errata related to a
specified product family or development tool of interest.
To register, access the Microchip web site at
www.microchip.com. Under “Support”, click on
“Customer Change Notification” and follow the
registration instructions.
 2005-2012 Microchip Technology Inc.
DS39747F-page 253
PIC24FJ128GA010 FAMILY
READER RESPONSE
It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip
product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our
documentation can better serve you, please FAX your comments to the Technical Publications Manager at
(480) 792-4150.
Please list the following information, and use this outline to provide us with your comments about this document.
TO:
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RE:
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Telephone: (_______) _________ - _________
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Application (optional):
Would you like a reply?
Y
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Device: PIC24FJ128GA010 family
Literature Number: DS39747F
Questions:
1. What are the best features of this document?
2. How does this document meet your hardware and software development needs?
3. Do you find the organization of this document easy to follow? If not, why?
4. What additions to the document do you think would enhance the structure and subject?
5. What deletions from the document could be made without affecting the overall usefulness?
6. Is there any incorrect or misleading information (what and where)?
7. How would you improve this document?
DS39747F-page 254
 2005-2012 Microchip Technology Inc.
PIC24FJ128GA010 FAMILY
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PIC 24 FJ 128 GA0 10 T - I / PT - XXX
Examples:
a)
Microchip Trademark
Architecture
b)
Flash Memory Family
Program Memory Size (KB)
Product Group
PIC24FJ128GA008-I/PT 301:
General purpose PIC24F, 96 Kbyte program
memory, 80-pin, Industrial temp.,
TQFP package, QTP pattern #301.
PIC24FJ128GA010-I/PT:
General purpose PIC24F, 128 Kbyte program
memory, 100-pin, Industrial temp.,
TQFP package.
Pin Count
Tape and Reel Flag (if applicable)
Temperature Range
Package
Pattern
Architecture
24
= 16-bit modified Harvard without DSP
Flash Memory Family
FJ
= Flash program memory
Product Group
GA0 = General purpose microcontrollers
Pin Count
06
08
10
= 64-pin
= 80-pin
= 100-pin
Temperature Range
I
= -40C to +85C (Industrial)
Package
PT
Pattern
Three-digit QTP, SQTP, Code or Special Requirements
(blank otherwise)
ES = Engineering Sample
= 64-Lead, 80-Lead, 100-Lead (12x12x1 mm)
TQFP (Thin Quad Flatpack)
PF = 100-Lead (14x14x1 mm) TQFP (Thin Quad Flatpack)
MR = 64-lead (9x9x0.9 mm) QFN (Quad Flatpack, No Lead)
 2005-2012 Microchip Technology Inc.
DS39747F-page 255
PIC24FJ128GA010 FAMILY
NOTES:
DS39747F-page 256
 2005-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE,
rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2005-2012, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN:978-1-61341-955-7
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
 2005-2012 Microchip Technology Inc.
DS39747F-page 257
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DS39747F-page 258
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11/29/11
 2005-2012 Microchip Technology Inc.