PIC18F6XKXX/8XKXX Family Flash MCU Programming Specification

PIC18F6XKXX/8XKXX FAMILY
Flash Microcontroller Programming Specification
1.0
DEVICE OVERVIEW
2.1
When programming with the ICSP, the PIC18F6XKXX/
8XKXX family requires two programmable power supplies: one for VDD and one for MCLR/VPP/RG5. Both
supplies should have a minimum resolution of 0.25V.
Refer to Section 6.0 “AC/DC Characteristics Timing
Requirements for Program/Verify Test Mode” for
additional hardware parameters.
This document includes the programming specifications
for the following devices:
• PIC18F65K22
• PIC18F85K22
• PIC18F65K90
• PIC18F85K90
• PIC18F66K22
• PIC18F86K22
• PIC18F66K90
• PIC18F86K90
• PIC18F67K22
• PIC18F87K22
• PIC18F67K90
• PIC18F87K90
2.0
Hardware Requirements
2.1.1
LOW-VOLTAGE ICSP™
PROGRAMMING
In Low-Voltage ICSP mode, the PIC18F6XKXX/8XKXX
family can be programmed using a VDD source in the
operating range. The MCLR/VPP/RG5 does not have to
be brought to a different voltage, but can instead be left
at the normal operating voltage. Refer to Section 6.0
“AC/DC Characteristics Timing Requirements for
Program/Verify Test Mode” for additional hardware
parameters.
PROGRAMMING OVERVIEW
The PIC18F6XKXX/8XKXX family of devices can be
programmed using the In-Circuit Serial Programming™
(ICSP™) method. This programming specification
applies to the PIC18F6XKXX/8XKXX family of devices
in all package types.
2.2
Pin Diagrams
The pin diagrams for the PIC18F6XKXX/8XKXX family
are shown in Figure 2-1 and Figure 2-2.
TABLE 2-1:
Pin Name
PIN DESCRIPTIONS (DURING PROGRAMMING): PIC18F6XKXX/8XKXX FAMILY
During Programming
Pin Name
Pin Type
MCLR/VPP/RG5
VPP
P
Programming Enable
VDD(1)
SS(1)
VDD
P
Power Supply
VSS
P
Ground
AVDD
AVDD
P
Analog Power Supply
AVSS
AVSS
P
Analog Ground
RB6
PGC
I
Serial Clock
RB7
PGD
I/O
Serial Data
V
Pin Description
ENVREG
ENVREG
P
Internal Voltage Regulator Enable
VDDCORE/
VCAP
VDDCORE
P
Regulated Power Supply for Microcontroller Core
VCAP
I
Filter Capacitor for On-Chip Voltage Regulator
Legend: I = Input, O = Output, P = Power
Note 1: All power supply (VDD) and ground (VSS) pins must be connected.
 2010 Microchip Technology Inc.
DS39947B-page 1
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-1:
PIC18F6XKXX FAMILY PIN DIAGRAM
RE1
RE0
RG0
RG1
RG2
RG3
MCLR/VPP/RG5
RG4
VSS
RD7
RD6
RD5
RD2
RD1
VSS
VDD
RD0
RE7
RE6
RE5
RE4
RD4
53 52 51 50 49
1
48
2
3
47
46
45
4
5
RF7
RF6
RF5
RF4
6
7
8
9
10
11
12
13
14
RF3
RF2
15
16
VDDCORE/VCAP
RE3
RE2
The following devices are included in 64-pin TQFP parts:
• PIC18F65K22
• PIC18F65K90
• PIC18F66K22
• PIC18F66K90
• PIC18F67K22
• PIC18F67K90
64 63 62 61 60 59 58 57 56 55 54
RD3
64-Pin TQFP
44
43
42
41
40
PIC18F6XKXX
39
38
37
36
35
34
33
RB0
RB1
RB2
RB3
RB4
RB5
RB6/PGC
VSS
RA6
RA7
VDD
RB7/PGD
RC5
RC4
RC3
RC2
DS39947B-page 2
RC7
RC6
RC0
RA4
RC1
RA5
VDD
VSS
RA0
RA1
RA2
AVSS
RA3
AVDD
RF1
ENVREG
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-2:
PIC18F8XKXX FAMILY PIN DIAGRAM
RJ1
RJ0
RD7
RD6
RD5
RD4
RD2
RD1
VSS
VDD
RD0
RE7
RE6
RE5
RE4
RE3
RE2
RH0
RH1
The following devices are included in 80-pin TQFP parts:
• PIC18F85K22
• PIC18F85K90
• PIC18F86K22
• PIC18F86K90
• PIC18F87K22
• PIC18F87K90
RD3
80-Pin TQFP
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
RH2
RH3
1
2
RE1
RE0
RG0
RG1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RG2
RG3
MCLR/VPP/RG5
RG4
VSS
VDDCORE/VCAP
RF7
RF6
RF5
RF4
RF3
RF2
RH7
RH6
60
59
58
57
56
55
54
53
52
51
50
PIC18F8XKXX
49
48
47
46
45
44
17
18
19
20
43
42
41
RJ2
RJ3
RB0
RB1
RB2
RB3
RB4
RB5
RB6/PGC
VSS
RA6
RA7
VDD
RB7/PGD
RC5
RC4
RC3
RC2
RJ7
RJ6
 2010 Microchip Technology Inc.
RJ5
RJ4
RC7
RC6
RC0
RA5
RA4
RC1
VDD
VSS
RA0
RA1
RA2
AVSS
RA3
AVDD
ENVREG
RF1
RH4
RH5
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
DS39947B-page 3
PIC18F6XKXX/8XKXX FAMILY
2.3
On-Chip Voltage Regulator
All of the PIC18F6XKXX/8XKXX devices have dual
power requirements. The microcontroller core can be
powered from an external source that is separate from
VDD, or it can be powered from an on-chip regulator
which derives power from VDD. Both sources use the
common VDDCORE/VCAP pin.
The regulator is enabled by connecting VDD to the
ENVREG pin. In this case, a low ESR capacitor must
be connected to the VDDCORE/VCAP pin for proper
device operation. If the regulator is disabled by connecting VSS to the ENVREG pin, power to the core is
supplied directly by VDD. The voltage levels for VDD
must not exceed the specified VDDCORE levels. A
bypass capacitor should be connected to the VDDCORE/
VCAP pin, but is not required. Whether or not the regulator is used, it is always good design practice to have
sufficient capacitance on all supply pins. Examples are
shown in Figure 2-3.
The specifications for core voltage and capacitance are
listed in Section 6.0 “AC/DC Characteristics Timing
Requirements for Program/Verify Test Mode”.
FIGURE 2-3:
CONNECTIONS FOR THE
ON-CHIP REGULATOR
Regulator Enabled (ENVREG tied to VDD):
5V(1)
PIC18F6XJXX/8XJXX
VDD
ENVREG
VDDCORE/VCAP
CF
VSS
Regulator Disabled (ENVREG tied to Ground):
3.3V(1)
PIC18F6XJXX/8XJXX
VDD
ENVREG
VDDCORE/VCAP(2)
VSS
Note 1: These are typical operating voltages. Refer
to Section 6.0 “AC/DC Characteristics
Timing Requirements for Program/Verify
Test Mode”.
2: When the regulator is disabled, VDDCORE/
VCAP may be left floating or connected to a
bypass capacitor.
DS39947B-page 4
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
2.4
Memory Maps
For PIC18FX7K90/X7K22 devices, the code memory
space extends from 000000h to 01FFFFh (128 Kbytes)
in eight 16-Kbyte blocks. For PIC18FX6K90/X6K22
devices, the code memory space extends from
000000h to 00FFFFh (64 Kbytes) in four 16-Kbyte
blocks. For PIC18FX5K90/X5K22 devices, the code
memory space extends from 000000h to 007FFFh
(32 Kbytes) in four 8-Kbyte blocks. Addresses, 0000h
through 07FFh, however, define a “Boot Block” region
that is treated separately from Block 0. All of these
blocks define code protection boundaries within the
code memory space.
The size of the Boot Block in PIC18F6XKXX/8XKXX
devices can be configured as 1 or 2K words (see
Table 5-1). This is done through the BBSIZ0 bit in the
Configuration register, CONFIG4L. It is important to
note that increasing the size of the Boot Block
decreases the size of Block 0.
 2010 Microchip Technology Inc.
TABLE 2-2:
Device
IMPLEMENTATION OF CODE
MEMORY
Code Memory Size (Bytes)
PIC18F65K22
PIC18F65K90
PIC18F85K22
000000h-007FFFh (32K)
PIC18F85K90
PIC18F66K22
PIC18F66K90
PIC18F86K22
000000h-00FFFFh (64K)
PIC18F86K90
PIC18F67K22
PIC18F67K90
PIC18F87K22
000000h-01FFFFh (128K)
PIC18F87K90
DS39947B-page 5
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-4:
MEMORY MAP AND THE CODE MEMORY SPACE FOR PIC18F6XKXX/8XKXX
DEVICES(1)
000000h
01FFFFh
Code Memory
Device/Memory Size
PIC18FX7K90/X7K22
PIC18FX6K90/X6K22
PIC18FX5K90/X5K22
BBSIZ = 1 BBSIZ = 0 BBSIZ = 1 BBSIZ = 0 BBSIZ = 1 BBSIZ = 0
Unimplemented
Read as ‘0’
Boot
Block(2)
2 KW
Block 0
6 KW
Boot
Block(2)
Block 0
7 KW
Boot
Block(2)
2 KW
Block 0
6 KW
Block 1
8 KW
Boot
Block(2)
Block 0
7 KW
Block 1
8 KW
Block 0
2 KW
Boot
Block(2)
Block 0
3 KW
0000h
0800h
1000h
1FFFh
Block 1
4 KW
Block 1
4 KW
2000h
3FFFh
Block 2
4 KW
Block 2
4 KW
4000h
5FFFh
Block 3
4 KW
Block 3
4 KW
6000h
7FFFh
Block 1
8 KW
Block 1
8 KW
Block 2
8 KW
Block 2
8 KW
Block 2
8 KW
Block 2
8 KW
8000h
BFFFh
Block 3
8 KW
Block 3
8 KW
Block 3
8 KW
Block 3
8 KW
C000h
FFFFh
Block 4
8 KW
Block 4
8 KW
10000h
13FFFh
Block 5
8 KW
Block 5
8 KW
14000h
17FFFh
Block 6
8 KW
Block 6
8 KW
18000h
1BFFFh
Block 7
8 KW
Block 7
8 KW
1C000h
1FFFFh
200000h
Configuration
and ID
Space
Boot
Block(2)
2 KW
Address
3FFFFFh
Note 1:
2:
Sizes of memory areas are not to scale.
Boot block size is determined by the BBSIZ0 bit (CONFIG4L<4>).
DS39947B-page 6
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
In addition to the code memory space, there are three
blocks in the configuration and ID space that are
accessible to the user through table reads and Table
Writes. Their locations in the memory map are shown
in Figure 2-5.
Users may store Identification information (ID) in eight
ID registers. These ID registers are mapped in
addresses, 200000h through 200007h. The ID locations read out normally, even after code protection is
applied.
Locations, 300000h through 30000Dh, are reserved for
the Configuration bits. These bits select various device
options and are described in Section 5.0 “Configuration Word”. These Configuration bits read out normally,
even after code protection.
Locations, 3FFFFEh and 3FFFFFh, are reserved for
the Device ID bits. These bits may be used by the
programmer to identify what device type is being
programmed and are described in Section 5.0 “Configuration Word”. These Device ID bits read out
normally, even after code protection.
 2010 Microchip Technology Inc.
2.4.1
MEMORY ADDRESS POINTER
Memory in the address space, 0000000h to 3FFFFFh,
is addressed via the Table Pointer register, which is
comprised of three Pointer registers:
• TBLPTRU, at RAM address 0FF8h
• TBLPTRH, at RAM address 0FF7h
• TBLPTRL, at RAM address 0FF6h
TBLPTRU
TBLPTRH
TBLPTRL
Addr<21:16>
Addr<15:8>
Addr<7:0>
The 4-bit command, ‘0000’ (core instruction), is used to
load the Table Pointer prior to using many read or write
operations.
DS39947B-page 7
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-5:
CONFIGURATION AND ID LOCATIONS FOR PIC18F6XKXX/8XKXX FAMILY
DEVICES
000000h
Code Memory
01FFFFh
Unimplemented
Read as ‘0’
1FFFFFh
Configuration
and ID
Space
2FFFFFh
ID Location 1
200000h
ID Location 2
200001h
ID Location 3
200002h
ID Location 4
200003h
ID Location 5
200004h
ID Location 6
200005h
ID Location 7
200006h
ID Location 8
200007h
CONFIG1L
300000h
CONFIG1H
300001h
CONFIG2L
300002h
CONFIG2H
300003h
CONFIG3L
300004h
CONFIG3H
300005h
CONFIG4L
300006h
CONFIG4H
300007h
CONFIG5L
300008h
CONFIG5H
300009h
CONFIG6L
30000Ah
CONFIG6H
30000Bh
CONFIG7L
30000Ch
CONFIG7H
30000Dh
Device ID1
3FFFFEh
Device ID2
3FFFFFh
3FFFFFh
Note:
Sizes of memory areas are not to scale.
DS39947B-page 8
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
2.5
High-Level Overview of the
Programming Process
Figure 2-6 shows the high-level overview of the
programming process. First, a Block Erase is performed
for each block. Next, the code memory, ID locations and
data EEPROM are programmed. These memories are
then verified to ensure that programming was successful.
If no errors are detected, the Configuration bits are then
programmed and verified.
FIGURE 2-6:
HIGH-LEVEL
PROGRAMMING FLOW
Start
Perform Sequential
Block Erase
Procedure
Program Memory
Program IDs
Program Data EE
2.6
Entering and Exiting High-Voltage
ICSP Program/Verify Mode
As shown in Figure 2-8, entering High-Voltage ICSP
Program/Verify mode requires two steps. First, voltage
is applied to the MCLR pin. Second, a 32-bit key
sequence is presented on PGD.
The programming voltage applied to MCLR is VIHH.
VIHH must be applied to MCLR during the transfer of
the key sequence. After VIHH is applied to MCLR, an
interval of at least P12 must elapse before presenting
the key sequence on PGD.
The key sequence is a specific 32-bit pattern,‘0100
1101 0100 0011 0100 1000 0101 0000’ (more
easily remembered as 4D434850h in hexadecimal).
The device will enter Program/Verify mode only if the
sequence is valid. The Most Significant bit of the most
significant nibble must be shifted in first.
Once the key sequence is complete, Program/Verify
mode is entered, and the program memory can be
accessed and programmed in serial fashion. While in
the Program/Verify mode, all unused I/Os are placed in
the high-impedance state.
Exiting Program/Verify mode is done by removing VIHH
from MCLR, as shown in Figure 2-10. The only requirement for exit is that an interval, P16, should elapse
between the last clock and the program signals on
PGC and PGD before removing VIHH.
Verify Program
Verify IDs
Verify Data
Program
Configuration Bits
Verify
Configuration Bits
Done
 2010 Microchip Technology Inc.
DS39947B-page 9
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-7:
ENTERING LOW-VOLTAGE PROGRAM/VERIFY MODE
P13
P1
VIH
VIH
MCLR
VDD
Program/Verify Entry Code = 4D434850h
0
b31
PGD
1
b30
0
b29
0
b28
1 ...
b27
0
b3
0
b2
0
b1
0
b0
0
b1
0
b0
PGC
P2B
P2A
P12
FIGURE 2-8:
ENTERING HIGH-VOLTAGE PROGRAM/VERIFY MODE
P13
P1
MCLR
VIHH
VDD
Program/Verify Entry Code = 4D434850h
0
b31
PGD
1
b30
0
b29
0
b8
1 ...
b27
0
b3
0
b2
PGC
P12
DS39947B-page 10
P2B
P2A
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
FIGURE 2-9:
EXITING LOW-VOLTAGE
PROGRAM/VERIFY MODE
P16
P17
VDD
Exiting Program/Verify mode is done by grounding the
MCLR again, as shown in Figure 2-9. The only requirement for exit is that an interval, P16, should elapse
between the last clock and the program signals on
PGC and PGD before grounding MCLR.
PGD
2.8
MCLR/VPP/RG5
P1
D041
PGD = Input
FIGURE 2-10:
EXITING HIGH-VOLTAGE
PROGRAM/VERIFY MODE
P16
MCLR/VPP/RG5
Serial Program/Verify Operation
The PGC pin is used as a clock input pin and the PGD
pin is used for entering command bits and data input/
output during serial operation. Commands and data are
transmitted on the rising edge of PGC, latched on the
falling edge of PGC and are Least Significant bit (LSb)
first.
PGC
P17
P1
D110
2.8.1
4-BIT COMMANDS
All instructions are 20 bits, consisting of a leading 4-bit
command followed by a 16-bit operand, which depends
on the type of command being executed. To input a
command, PGC is cycled four times. The commands
needed for programming and verification are shown in
Table 2-3. Commands and data are entered LSb first.
Depending on the 4-bit command, the 16-bit operand
represents 16 bits of input data, or 8 bits of input data
and 8 bits of output data.
VDD
PGD
PGC
PGD = Input
2.7
ing data on PGD. On successful entry, the program
memory can be accessed and programmed in serial
fashion. While in the Program/Verify mode, all unused
I/Os are placed in the high-impedance state.
Throughout this specification, commands and data are
presented as illustrated in Table 2-4. The 4-bit command
and data are shown Most Significant bit (MSb) first. The
command operand, or “Data Payload”, is shown
<LSB><MSB>. Figure 2-11 demonstrates how to serially
present a 20-bit command/operand to the device.
Entering and Exiting Low-Voltage
ICSP Program/Verify Mode
As shown in Figure 2-7, entering low-voltage ICSP
Program/Verify mode requires three steps:
1.
2.
3.
The MCLR pin is grounded.
A 32-bit key sequence is presented on PGD.
The MCLR pin is brought to VDD
The MCLR pin must be grounded during the transfer of
the key sequence. After MCLR is grounded, an interval
of at least P12 must elapse before presenting the key
sequence on PGD. The key sequence is a specific
32-bit pattern,‘0100 1101 0100 0011 0100 1000
0101 0000’ (more easily remembered as 4D434850h
in hexadecimal). The device will enter Program/Verify
mode only if the sequence is valid. The Most Significant
bit of the most significant nibble must be shifted in first.
Once the key sequence is complete, VIH, or usually
VDD, must be applied to MCLR and held at that level for
as long as Program/Verify mode is to be maintained.
There is no minimum time requirement before present-
 2010 Microchip Technology Inc.
DS39947B-page 11
PIC18F6XKXX/8XKXX FAMILY
2.8.2
TABLE 2-4:
CORE INSTRUCTION
The core instruction passes a 16-bit instruction to the
CPU core for execution. This is needed to set up
registers as appropriate for use with other commands.
TABLE 2-3:
COMMANDS FOR
PROGRAMMING
Core Instruction (shift in16-bit
instruction)
0000
Shift out TABLAT register
0010
Table Read
1000
Table Read, Post-Increment
1001
Table Read, Post-Decrement
1010
Table Read, Pre-Increment
1011
Table Write
1100
Table Write, Post-Increment by 2
1101
Table Write, Start Programming,
Post-Increment by 2
1110
Table Write, Start Programming
1111
Data
Payload
1101
3C 40
Core Instruction
Table Write,
post-increment by 2
TABLE WRITE, POST-INCREMENT TIMING (1101)
P2
1
4-Bit
Command
4-Bit
Command
Description
FIGURE 2-11:
SAMPLE COMMAND
SEQUENCE
2
3
P2A
P2B
4
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
2
1
3
4
PGC
P5A
P5
P4
LSB
P3
PGD
1
LSb
0
1
1
MSb
4-Bit Command
0
LSb
0
0
0
0
0
MSB
0
1
0
0
0
1
4
C
16-Bit Data Payload
1
1
1
0
3
0
n
n
n
n
MSb
Fetch Next 4-Bit Command
PGD = Input
DS39947B-page 12
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
3.0
DEVICE PROGRAMMING
Programming includes the ability to erase or write the
various memory regions within the device.
In all cases, except ICSP Block Erase, the EECON1
register must be configured in order to operate on a
particular memory region.
When using the EECON1 register to act on code
memory, the EEPGD bit must be set (EECON1<7> = 1)
and the CFGS bit must be cleared (EECON1<6> = 0).
REGISTER 3-1:
The WREN bit must be set (EECON1<2> = 1) to
enable writes of any sort (e.g., erases) and this must be
done prior to initiating a write sequence. The FREE bit
must be set (EECON1<4> = 1) in order to erase the
program space being pointed to by the Table Pointer.
The erase or write sequence is initiated by setting the
WR bit (EECON1<1> = 1). It is strongly recommended
that the WREN bit only be set immediately prior to a
program or erase.
EECON1 REGISTER
R/W-x
EEPGD
R/W-x
CFGS
U-0
—
R/W-0
FREE
R/W-x
(1)
WRERR
R/W-0
R/S-0
R/S-0
WREN
WR
RD
bit 7
bit 0
bit 7
EEPGD: Flash Program or Data EEPROM Memory Select bit
1 = Access Flash program memory
0 = Access data EEPROM memory
bit 6
CFGS: Flash Program/Data EEPROM or Configuration Select bit
1 = Access Configuration registers
0 = Access Flash program or data EEPROM memory
bit 5
Unimplemented: Read as ‘0’
bit 4
FREE: Flash Row Erase Enable bit
1 = Erase the program memory row addressed by TBLPTR on the next WR command
(cleared by completion of erase operation)
0 = Perform write-only
bit 3
WRERR: Flash Program/Data EEPROM Error Flag bit(1)
1 = A write operation is prematurely terminated (any Reset during self-timed programming in
normal operation or an improper write attempt)
0 = The write operation completed
bit 2
WREN: Flash Program/Data EEPROM Write Enable bit
1 = Allows write cycles to Flash program/data EEPROM
0 = Inhibits write cycles to Flash program/data EEPROM
bit 1
WR: Write Control bit
1 = Initiates a data EEPROM erase/write cycle or a program memory erase/write cycle
(The operation is self-timed and the bit is cleared by hardware once the write is complete.
The WR bit can only be set (not cleared) in software.)
0 = Write cycle to the EEPROM is complete
bit 0
RD: Read Control bit
1 = Initiates an EEPROM read
(Read takes one cycle. RD is cleared in hardware. The RD bit can only be set (not cleared)
in software. The RD bit cannot be set when EEPGD = 1 or CFGS = 1.)
0 = Does not initiate an EEPROM read
Legend:
R = Readable bit
W = Writable bit
S = Bit can be set by software, but not cleared
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘0’ = Bit is cleared
Note 1:
 2010 Microchip Technology Inc.
‘1’ = Bit is set
x = Bit is unknown
When a WRERR occurs, the EEPGD and CFGS bits are not cleared. This allows
tracing of the error condition.
DS39947B-page 13
PIC18F6XKXX/8XKXX FAMILY
3.1
3.1.1
ICSP Erase
TABLE 3-2:
ICSP BLOCK ERASE
Erasing code or data EEPROM is accomplished by configuring three Block Erase Control registers located at
3C0004h and 3C0006h. Code memory can only be
erased, portions at a time. In order to erase the entire
device, every block must be erased sequentially. Block
Erase operations will also clear any code-protect settings
associated with the memory block erased. Erase options
are detailed in Table 3-1. Data EEPROM is erased at the
same time as all Block Erase commands. In order to
erase data EEPROM by itself, the first code sequence
in Table 3-1 must be used. If the entire device is being
erased, this code is not necessary.
TABLE 3-1:
BLOCK ERASE OPERATIONS
Description
Data
(3C0006h:3C0004h)
Erase Data EEPROM
Erase Boot Block
Erase Config Bits
Erase Code EEPROM Block 0
Erase Code EEPROM Block 1
Erase Code EEPROM Block 2
Erase Code EEPROM Block 3
Erase Code EEPROM Block 4
Erase Code EEPROM Block 5
Erase Code EEPROM Block 6
Erase Code EEPROM Block 7
800004h
800005h
800002h
800104h
800204h
800404h
800804h
801004h
802004h
804004h
808004h
The actual Block Erase function is a self-timed operation.
Once the erase has started (falling edge of the 4th PGC
after the NOP command), serial execution will cease until
the erase completes (Parameter P11). During this time,
PGC may continue to toggle but PGD must be held low.
The code sequence to erase the entire device is shown
in Table 3-2 through Table 3-11, and the flowchart is
shown in Figure 3-1. The code sequence to erase just
data EEPROM is shown in Table 3-12.
Note:
A Block Erase is the only way to reprogram code-protect bits from an ON state to
an OFF state.
DS39947B-page 14
4-Bit
Command
ERASE BLOCK 0
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
01
0E
6E
80
0000
0000
00 00
00 00
TABLE 3-3:
4-Bit
Command
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0000
0000
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 01h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 0
NOP
Hold PGD low until erase
completes
ERASE BLOCK 1
Data
Payload
0E
6E
0E
6E
0E
6E
04
0E
6E
02
0E
6E
80
3C
F8
00
F7
04
F6
04
05
F6
02
06
F6
80
00 00
00 00
TABLE 3-4:
4-Bit
Command
3C
F8
00
F7
04
F6
04
05
F6
01
06
F6
80
Core Instruction
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 02h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3c0006h to
erase block 1
NOP
Hold PGD low until
erase completes
ERASE BLOCK 2
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
04
0E
6E
80
0000
0000
00 00
00 00
3C
F8
00
F7
04
F6
04
05
F6
04
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 04h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 2
NOP
Hold PGD low until
erase completes
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 3-5:
4-Bit
Command
ERASE BLOCK 3
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
08
0E
6E
80
0000
0000
00 00
00 00
TABLE 3-6:
4-Bit
Command
3C
F8
00
F7
04
F6
04
05
F6
08
06
F6
80
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 08h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 3
NOP
Hold PGD low until
Erase completes
ERASE BLOCK 4
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
10
0E
6E
80
0000
0000
00 00
00 00
TABLE 3-7:
4-Bit
Command
Core Instruction
3C
F8
00
F7
04
F6
04
05
F6
10
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 10h to 3C0005h to
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 4
NOP
Hold PGD low until
Erase completes
ERASE BLOCK 5
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
20
0E
6E
80
0000
0000
00 00
00 00
3C
F8
00
F7
04
F6
04
05
F6
20
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 20h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 5
NOP
Hold PGD low until
Erase completes
 2010 Microchip Technology Inc.
TABLE 3-8:
4-Bit
Command
ERASE BLOCK 6
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
40
0E
6E
80
0000
0000
00 00
00 00
TABLE 3-9:
4-Bit
Command
3C
F8
00
F7
04
F6
04
05
F6
40
06
F6
80
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOFWF TBLPTRL
Write 40h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 6
NOP
Hold PGD low until
Erase completes
ERASE BLOCK 7
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
80
0E
6E
80
0000
0000
00 00
00 00
TABLE 3-10:
4-Bit
Command
Core Instruction
3C
F8
00
F7
04
F6
04
05
F6
80
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 80h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase block 7
NOP
Hold PGD low until
Erase completes
ERASE BOOT BLOCK
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
05
0E
6E
00
0E
6E
80
0000
0000
00 00
00 00
3C
F8
00
F7
04
F6
05
05
F6
00
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 05h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 00h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase boot block
NOP
Hold PGD low until
Erase completes
DS39947B-page 15
PIC18F6XKXX/8XKXX FAMILY
TABLE 3-11:
4-Bit
Command
ERASE CONFIGURATION
FUSES
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
02
0E
6E
00
0E
6E
80
0000
0000
00 00
00 00
DS39947B-page 16
3C
F8
00
F7
04
F6
02
05
F6
00
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 02h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 00h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase configuration fuses
NOP
Hold PGD low until
Erase completes
TABLE 3-12:
4-Bit
Command
ERASE DATA EEPROM
Data
Payload
0000
0000
0000
0000
0000
0000
1100
0000
0000
1100
0000
0000
1100
0E
6E
0E
6E
0E
6E
04
0E
6E
00
0E
6E
80
0000
0000
00 00
00 00
3C
F8
00
F7
04
F6
04
05
F6
00
06
F6
80
Core Instruction
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 04h to 3C0004h
MOVLW 05h
MOVWF TBLPTRL
Write 00h to 3C0005h
MOVLW 06h
MOVWF TBLPTRL
Write 80h to 3C0006h to
erase Data EEPROM
NOP
Hold PGD low until
Erase completes
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
FIGURE 3-1:
BLOCK ERASE FLOW
Start
Write 04h
to 3C0004h
Write 01h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 0
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 02h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 1
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 04h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 2
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 08h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 3
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 10h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 4
Delay P11 + P10
Time
 2010 Microchip Technology Inc.
Write 04h
to 3C0004h
Write 20h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 5
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 40h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 6
Delay P11 + P10
Time
Write 04h
to 3C0004h
Write 80h
to 3C0005h
Write 80h to
3C0006h to Erase
Block 7
Delay P11 + P10
Time
Write 05h
to 3C0004h
Write 00h
to 3C0005h
Write 80h to
3C0006h to Erase
Boot Block
Delay P11 + P10
Time
Write 02h
to 3C0004h
Write 00h
to 3C0005h
Write 80h to
3C0006h to Erase
Config. Fuses
Delay P11 + P10
Time
Done
DS39947B-page 17
PIC18F6XKXX/8XKXX FAMILY
FIGURE 3-2:
BLOCK ERASE TIMING
P10
1
2
3
4
1
2
15 16
1
2
3
4
1
2
15 16
1
2
3
4
1
2
n
n
PGC
PGD
0 0 1 1
4-Bit Command
1 1
0
0
16-Bit
Data Payload
P5A
P5
P5A
P5
0 0
0 0
4-Bit Command
0 0
0 0
16-Bit
Data Payload
P11
0
0
0 0
4-Bit Command
Erase Time
16-Bit
Data Payload
PGD = Input
3.1.2
ICSP ROW ERASE
It is possible to erase one row (64 bytes of data for
PIC18FX5KXX and PIC18FX6KXX devices and
128 bytes of data for PIC18FX7KXX devices) provided
the block is not code or write-protected. Rows are
located at static boundaries, beginning at program
memory address, 000000h, extending to the internal
program memory limit (see Section 2.4 “Memory
Maps”).
The code sequence to Row Erase a PIC18F6XKXX/
8XKXX family device is shown in Table 3-13. The
flowchart, shown in Figure 3-3, depicts the logic
necessary to completely erase a PIC18F6XKXX/
8XKXX family device. The timing diagram that details
the Start Programming command, and Parameters P9
and P10, are shown in Figure 3-4.
Note:
The TBLPTR register can point to any byte
within the row intended for erase.
The Row Erase duration is externally timed and is
controlled by PGC. After the WR bit in EECON1 is set,
a NOP is issued, where the 4th PGC is held high for the
duration of the programming time, P9.
After PGC is brought low, the programming sequence
is terminated. PGC must be held low for the time
specified by parameter P10 to allow high-voltage
discharge of the memory array.
DS39947B-page 18
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 3-13:
4-Bit
Command
SINGLE ROW ERASE CODE MEMORY CODE SEQUENCE
Data Payload
Core Instruction
Step 1: Direct access to code memory and enable writes.
0000
0000
0000
8E 7F
9C 7F
84 7F
BSF
BCF
BSF
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
Step 2: Point to first row in code memory.
0000
0000
0000
6A F8
6A F7
6A F6
CLRF
CLRF
CLRF
TBLPTRU
TBLPTRH
TBLPTRL
Step 3: Enable erase and erase single row.
0000
0000
0000
88 7F
82 7F
00 00
BSF
EECON1, FREE
BSF
EECON1, WR
NOP – hold PGC high for time P9 and low for time P10.
Step 4: Repeat step 3 with Address Pointer incremented by 64 until all rows are erased.
FIGURE 3-3:
SINGLE ROW ERASE CODE MEMORY FLOW
Start
Addr = 0
Configure
Device for
Row Erases
Start Erase Sequence
and Hold PGC High
for Time P9
Addr = Addr + 64
Hold PGC Low
for Time P10
No
All
rows
done?
Yes
Done
 2010 Microchip Technology Inc.
DS39947B-page 19
PIC18F6XKXX/8XKXX FAMILY
3.2
Code Memory Programming
The code sequence to program a PIC18F6XKXX/
8XKXX family device is shown in Table 3-15. The
flowchart shown in Figure 3-6 depicts the logic
necessary to completely write a PIC18F6XKXX/8XKXX
family device. The timing diagram that details the Start
Programming command and Parameters P9 and P10
are shown in Figure 3-4.
Programming code memory is accomplished by first
loading data into the write buffer and then initiating a
programming sequence. The write and erase buffer
sizes shown in Table 3-14 can be mapped to any
location of the same size beginning at 000000h. The
actual memory write sequence takes the contents of
this buffer and programs the proper amount of code
memory that contains the Table Pointer.
Note:
The programming duration is externally timed and is
controlled by PGC. After a Start Programming
command is issued (4-bit command, ‘1111’), a NOP is
issued, where the 4th PGC is held high for the duration
of the programming time, P9.
TABLE 3-14:
After PGC is brought low, the programming sequence
is terminated. PGC must be held low for the time
specified by parameter P10 to allow high-voltage
discharge of the memory array.
FIGURE 3-4:
The TBLPTR register must point to the
same region when initiating the programming sequence as it did when the write
buffers were loaded.
WRITE AND ERASE
BUFFER SIZES
All Devices
Write Buffer Size
in Bytes
Erase Buffer
Size in Bytes
PIC18FX5KXX/
X6KXX
64
64
PIC18FX7KXX
128
128
TABLE WRITE AND START PROGRAMMING INSTRUCTION TIMING (1111)
P10
1
2
3
4
1
2
3
4
5
6
15 16
1
2
3
4
PGC
2
3
0
0
0
P9
P5A
P5
PGD
1
(1)
1
1
1
1
4-Bit Command
n
n
n
n
n
n
n
n
16-Bit Data Payload
0
0
0
0
4-bit Command Programming Time
16-Bit
Data Payload
PGD = Input
Note 1: Use P9A for User ID and Configuration Word programming.
DS39947B-page 20
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
FIGURE 3-5:
ERASE AND WRITE BOUNDARIES
TBLPTR<21:16> = 1
64-Byte Write Buffer
Panel 2
TBLPTR<5:0> = 63
.
.
.
.
.
TBLPTR<5:0> = 0
Erase Region
64 Bytes
Offset = TBLPTR<15:6>
TBLPTR<21:16> = 0
64-Byte Write Buffer
Panel 1
TBLPTR<5:0> = 63
.
.
.
.
.
TBLPTR<5:0> = 0
Erase Region
64 Bytes
Offset = TBLPTR<15:6>
Note: TBLPTR = TBLPTRU:TBLPTRH:TBLPTRL.
 2010 Microchip Technology Inc.
DS39947B-page 21
PIC18F6XKXX/8XKXX FAMILY
3.2.1
PROGRAMMING
A maximum of 64 bytes can be programmed into the
block referenced by TBLPTR<21:6>. The panel that
will be written will automatically be enabled based on
the value of the Table Pointer.
TABLE 3-15:
WRITE CODE MEMORY CODE SEQUENCE FOR PROGRAMMING
4-Bit
Command
Data Payload
Core Instruction
Step 1: Direct access to code memory and enable writes.
0000
0000
0000
8E 7F
9C 7F
84 7F
BSF
BCF
BSF
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
Step 2: Load write buffer for panel.
Step 3: Repeat for all but the last two bytes. Any unused locations should be filled with FFFFh between
MOVWF TBLPTRL and Write 2 bytes, and post-increment address by 2.
Step 4: Load write buffer for last two bytes. After this, repeat 28 times.
0000
0000
0000
0000
0000
0000
1101
.
.
.
1111
0000
0E <Addr[21:16]>
6E F8
0E <Addr[15:8]>
6E F7
0E <Addr[7:0]>
6E F6
<MSB><LSB>
.
.
.
<MSB><LSB>
00 00
MOVLW <Addr[21:16]>
MOVWF TBLPTRU
MOVLW <Addr[15:8]>
MOVWF TBLPTRH
MOVLW <Addr[7:0]>
MOVWF TBLPTRL
Write 2 bytes and post-increment address by 2
.
. Repeat 31 times
.
Write 2 bytes and start programming
NOP - hold SCLK high for time P9, low for time P10
To continue writing data, repeat Steps 3 and 4, where the Address Pointer is incremented by 64 at each iteration of
the loop.
DS39947B-page 22
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
FIGURE 3-6:
PROGRAM CODE MEMORY FLOW
Start
LoopCount = 0
Configure
Device for
Writes
Load 2 Bytes
to Write
Buffer at <Addr>
LoopCount =
LoopCount + 1
No
All
Bytes
Written?
Yes
Start Write Sequence
and Hold PGC
High Until Done
and Wait P9
No
All
Locations
Done?
Yes
Done
 2010 Microchip Technology Inc.
DS39947B-page 23
PIC18F6XKXX/8XKXX FAMILY
3.2.2
MODIFYING CODE MEMORY
The previous programming example assumed that the
device has been erased entirely prior to programming
(see Section 3.1.1 “ICSP Block Erase”). It may be the
case, however, that the user wishes to modify only a
section of an already programmed device.
The appropriate number of bytes required for the erase
buffer must be read out of code memory (as described
in Section 4.2 “Verify Code Memory and ID Locations”) and buffered. Modifications can be made on this
buffer. Then, the block of code memory that was read
out must be erased and rewritten with the modified data
(see Section 3.2.1 “Programming”).
The WREN bit must be set if the WR bit in EECON1 is
used to initiate a write sequence.
TABLE 3-16:
MODIFYING CODE MEMORY
4-Bit
Command
Data Payload
Core Instruction
Step 1: Direct access to code memory.
Step 2: Read and modify code memory (see Section 4.1 “Read Code Memory, ID Locations and Configuration Bits”).
0000
0000
8E 7F
9C 7F
BSF
BCF
EECON1, EEPGD
EECON1, CFGS
Step 3: Set the Table Pointer for the block to be erased.
0000
0000
0000
0000
0000
0000
0E
6E
0E
6E
0E
6E
<Addr[21:16]>
F8
<Addr[8:15]>
F7
<Addr[7:0]>
F6
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
<Addr[21:16]>
TBLPTRU
<Addr[8:15]>
TBLPTRH
<Addr[7:0]>
TBLPTRL
Step 4: Enable memory writes and set up an erase.
0000
0000
84 7F
88 7F
BSF
BSF
EECON1, WREN
EECON1, FREE
Step 5: Initiate erase.
0000
0000
82 7F
00 00
BSF
EECON1, WR
NOP - hold PGC high for time P9 and low for time P10.
Step 6: Direct access to configuration memory.
0000
0000
0000
8E 7F
8C 7F
84 7F
BSF
BSF
BSF
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
Step 7: Direct access to code memory and enable writes.
0000
0000
8E 7F
9C 7F
BSF
BCF
EECON1, EEPGD
EECON1, CFGS
Step 8: Load write buffer. The correct bytes will be selected based on the Table Pointer.
0000
0000
0000
0000
0000
0000
1101
.
.
.
1111
0000
0E <Addr[21:16]>
6E F8
0E <Addr[8:15]>
6E F7
0E <Addr[7:0]>
6E F6
<MSB><LSB>
.
.
.
<MSB><LSB>
00 00
MOVLW <Addr[21:16]>
MOVWF TBLPTRU
MOVLW <Addr[8:15]>
MOVWF TBLPTRH
MOVLW <Addr[7:0]>
MOVWF TBLPTRL
Write 2 bytes and post-increment address by 2.
Repeat 31 times
Write 2 bytes and start programming.
NOP - hold PGC high for time P9 and low for time P10.
To continue modifying data, repeat Steps 2 through 8, where the Address Pointer is incremented by the 64 bytes at each iteration of
the loop.
Step 9: Disable writes.
0000
94 7F
DS39947B-page 24
BCF
EECON1, WREN
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
3.3
Data EEPROM Programming
FIGURE 3-7:
PROGRAM DATA FLOW
Data EEPROM is accessed one byte at a time via an
Address Pointer (register pair: EEADRH:EEADR) and
a data latch (EEDATA). Data EEPROM is written by
loading EEADRH:EEADR with the desired memory
location, EEDATA with the data to be written and
initiating a memory write by appropriately configuring
the EECON1 register (Register 3-1). A byte write automatically erases the location and writes the new data
(erase-before-write).
Start
Set Address
Set Data
Enable Write
When using the EECON1 register to perform a data
EEPROM write, both the EEPGD and CFGS bits must
be cleared (EECON1<7:6> = 00). The WREN bit must
be set (EECON1<2> = 1) to enable writes of any sort
and this must be done prior to initiating a write
sequence. The write sequence is initiated by setting the
WR bit (EECON1<1> = 1).
Start Write
Sequence
The write begins on the falling edge of the 4th PGC
after the WR bit is set. It ends when the WR bit is
cleared by hardware.
Yes
No
done?
After the programming sequence terminates, PGC must
still be held low for the time specified by Parameter P10
to allow high-voltage discharge of the memory array.
FIGURE 3-8:
No
WR bit
clear?
Yes
Done
DATA EEPROM WRITE TIMING
P10
1
2
3
4
1
2
1
15 16
2
PGC
P5A
P5
PGD
P11A
n
0 0 0 0
4-Bit Command BSF EECON1, WR
n
16-Bit Data
Payload
Poll WR Bit, Repeat until Clear
(see below)
PGD = Input
1
2
3
4
1
2
15 16
1
2
3
4
1
2
15 16
PGC
P5
P5A
P5
P5A
Poll WR bit
PGD
0 0 0 0
0 0 0 0
4-Bit Command MOVF EECON1, W, 0
PGD = Input
 2010 Microchip Technology Inc.
4-Bit Command
MOVWF TABLAT
Shift Out Data
(see Figure 4-4)
PGD = Output
DS39947B-page 25
PIC18F6XKXX/8XKXX FAMILY
TABLE 3-17:
PROGRAMMING DATA MEMORY
4-Bit
Command
Data Payload
Core Instruction
Step 1: Direct access to data EEPROM.
0000
0000
9E 7F
9C 7F
BCF
BCF
EECON1, EEPGD
EECON1, CFGS
Step 2: Set the data EEPROM Address Pointer.
0000
0000
0000
0000
0E
6E
OE
6E
<Addr>
62
<AddrH>
63
MOVLW
MOVWF
MOVLW
MOVWF
<Addr>
EEADR
<AddrH>
EEADRH
Step 3: Load the data to be written.
0000
0000
0E <Data>
6E 61
MOVLW <Data>
MOVWF EEDATA
Step 4: Enable memory writes.
0000
84 7F
BSF
EECON1, WREN
BSF
EECON1, WR
Step 5: Initiate write.
0000
82 7F
Step 6: Poll WR bit, repeat until the bit is clear.
0000
0000
0000
0010
50 7F
6E F5
00 00
<MSB><LSB>
MOVF
EECON1, W, 0
MOVWF TABLAT
NOP
Shift out data(1)
Step 7: Hold PGC low for time, P10.
Step 8: Disable writes.
0000
94 7F
BCF
EECON1, WREN
Repeat steps 2 through 8 to write more data.
Note 1:
See Figure 4-4 for details on shift out data timing.
DS39947B-page 26
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
3.4
ID Location Programming
The ID locations are programmed much like the code
memory. The ID registers are mapped in addresses
200000h through 200007h. These locations read out
normally even after code protection.
Note:
The user only needs to fill the first 8 bytes
of the write buffer in order to write the ID
locations.
TABLE 3-18:
4-Bit
Command
Table 3-18 demonstrates the code sequence required
to write the ID locations.
In order to modify the ID locations, refer to the methodology described in Section 3.2.2 “Modifying Code
Memory”. As with code memory, the ID locations must
be erased before being modified.
WRITE ID SEQUENCE
Data Payload
Core Instruction
Step 1: Direct access to code memory and enable writes.
0000
0000
8E 7F
9C 7F
BSF
BCF
EECON1, EEPGD
EECON1, CFGS
Step 2: Load write buffer with 8 bytes and write.
0000
0000
0000
0000
0000
0000
1101
1101
1101
1111
0000
0E 20
6E F8
0E 00
6E F7
0E 00
6E F6
<MSB><LSB>
<MSB><LSB>
<MSB><LSB>
<MSB><LSB>
00 00
 2010 Microchip Technology Inc.
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
Write
Write
Write
Write
NOP -
20h
TBLPTRU
00h
TBLPTRH
00h
TBLPTRL
2 bytes and post-increment address by
2 bytes and post-increment address by
2 bytes and post-increment address by
2 bytes and start programming.
hold PGC high for time P9 and low for
2.
2.
2.
time P10.
DS39947B-page 27
PIC18F6XKXX/8XKXX FAMILY
3.5
Boot Block Programming
3.6
The code sequence detailed in Table 3-15 should be
used, except that the address used in “Step 2” will be in
the range of 000000h to 0007FFh or 000000h to
000FFFh, as defined by the BBSIZ0 bit in the
CONFIG4L register (see Table 5-1).
Configuration Bits Programming
Unlike code memory, the Configuration bits are
programmed a byte at a time. The Table Write, Begin
Programming 4-bit command (‘1111’) is used, but only
8 bits of the following 16-bit payload will be written. The
LSB of the payload will be written to even addresses and
the MSB will be written to odd addresses. The code
sequence to program two consecutive configuration
locations is shown in Table 3-19.
Note:
TABLE 3-19:
The address must be explicitly written for
each byte programmed. The addresses
can not be incremented in this mode.
SET ADDRESS POINTER TO CONFIGURATION LOCATION
4-Bit
Command
Data Payload
Core Instruction
Step 1: Enable writes and direct access to configuration memory.
0000
0000
8E 7F
8C 7F
BSF
BSF
EECON1, EEPGD
EECON1, CFGS
Step 2: Set Table Pointer for configuration byte to be written; write even/odd addresses.(1)
0000
0000
0000
0000
0000
0000
1111
0000
0000
0000
1111
0000
Note 1:
0E 30
6E F8
0E 00
6E F7
0E 00
6E F6
<MSB ignored><LSB>
00 00
0E 01
6E F6
<MSB><LSB ignored>
00 00
MOVLW 30h
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRL
Load 2 bytes and start programming.
NOP - hold PGC high for time P9 and low for time P10.
MOVLW 01h
MOVWF TBLPTRL
Load 2 bytes and start programming.
NOP - hold PGC high for time P9A and low for time P10.
Enabling the write protection of Configuration bits (WRTC = 0 in CONFIG6H) will prevent further writing of
Configuration bits. Always write all the Configuration bits before enabling the write protection for Configuration
bits.
FIGURE 3-9:
DS39947B-page 28
CONFIGURATION PROGRAMMING FLOW
Start
Start
Load Even
Configuration
Address
Load Odd
Configuration
Address
Program
LSB
Program
MSB
Delay P9A and P10
Time for Write
Delay P9A and P10
Time for Write
Done
Done
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
4.0
READING THE DEVICE
4.1
Read Code Memory, ID Locations
and Configuration Bits
The 4-bit command is shifted in, LSb first. The read is
executed during the next 8 clocks, then shifted out on
PGD during the last 8 clocks, LSb to MSb. A delay of
P6 must be introduced after the falling edge of the 8th
PGC of the operand to allow PGD to transition from an
input to an output. During this time, PGC must be held
low (see Figure 4-1). This operation also increments
the Table Pointer by one, pointing to the next byte in
code memory for the next read.
Code memory is accessed one byte at a time via the
4-bit command, ‘1001’ (table read, post-increment).
The contents of memory pointed to by the Table Pointer
(TBLPTRU:TBLPTRH:TBLPTRL) are serially output on
PGD.
TABLE 4-1:
This technique will work to read any memory in the
000000h to 3FFFFFh address space, so it also applies
to the reading of the ID and Configuration registers.
READ CODE MEMORY SEQUENCE
4-Bit
Command
Data Payload
Core Instruction
Step 1: Set Table Pointer.
0000
0000
0000
0000
0000
0000
0E
6E
0E
6E
0E
6E
<Addr[21:16]>
F8
<Addr[15:8]>
F7
<Addr[7:0]>
F6
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
Addr[21:16]
TBLPTRU
<Addr[15:8]>
TBLPTRH
<Addr[7:0]>
TBLPTRL
Step 2: Read memory and then shift out on PGD, LSb to MSb.
1001
00 00
FIGURE 4-1:
1
TBLRD *+
TABLE READ, POST-INCREMENT INSTRUCTION TIMING (1001)
2
3
4
1
2
3
4
5
6
7
9
8
1
10 11 12 13 14 15 16
2
3
4
PGC
P5
P5A
P6
P14
PGD
1
0
0
LSb 1
1
2
3
4
5
Shift Data Out
PGD = Input
 2010 Microchip Technology Inc.
PGD = Output
6
MSb
n
n
n
n
Fetch Next 4-Bit Command
PGD = Input
DS39947B-page 29
PIC18F6XKXX/8XKXX FAMILY
4.2
Verify Code Memory and
ID Locations
The verify step involves reading back the code memory
space and comparing it against the copy held in the
programmer’s buffer. Memory reads occur a single byte
at a time, so two bytes must be read to compare
against the word in the programmer’s buffer. Refer to
Section 4.1 “Read Code Memory, ID Locations and
Configuration Bits” for implementation details of
reading code memory.
FIGURE 4-2:
The Table Pointer must be manually set to 200000h
(base address of the ID locations) once the code
memory has been verified. The post-increment feature
of the table read 4-bit command may not be used to
increment the Table Pointer beyond the code memory
space. In a 128-Kbyte device, for example, a
post-increment read of address, 1FFFFh, will wrap the
Table Pointer back to 000000h, rather than point to
unimplemented address, 020000h.
VERIFY CODE MEMORY FLOW
Start
Set TBLPTR = 0
Set TBLPTR = 200000h
Read Low Byte
with Post-Increment
Read Low Byte
with Post-Increment
Read High Byte
with Post-Increment
Does
Word = Expect
data?
Yes
No
All
code memory
verified?
Yes
Increment
Pointer
No
Read High Byte
with Post-Increment
Does
Word = Expect
data?
Failure,
Report
Error
No
Failure,
Report
Error
Yes
No
All
ID locations
verified?
Yes
Done
DS39947B-page 30
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
4.3
Verify Configuration Bits
FIGURE 4-3:
READ DATA EEPROM
FLOW
A configuration address may be read and output on
PGD via the 4-bit command, ‘1001’. Configuration data
is read and written in a byte-wise fashion, so it is not
necessary to merge two bytes into a word prior to a
compare. The result may then be immediately
compared to the appropriate configuration data in the
programmer’s memory for verification. Refer to
Section 4.1 “Read Code Memory, ID Locations and
Configuration Bits” for implementation details of
reading configuration data.
4.4
Start
Set
Address
Read
Byte
Read Data EEPROM Memory
Data EEPROM is accessed one byte at a time via an
Address Pointer (register pair, EEADRH:EEADR) and
a data latch (EEDATA). Data EEPROM is read by
loading EEADRH:EEADR with the desired memory
location and initiating a memory read by appropriately
configuring the EECON1 register (Register 3-1). The
data will be loaded into EEDATA, where it may be
serially output on PGD via the 4-bit command, ‘0010’
(Shift Out Data Holding register). A delay of P6 must be
introduced after the falling edge of the 8th PGC of the
operand to allow PGD to transition from an input to an
output. During this time, PGC must be held low (see
Figure 4-4).
Move to TABLAT
Shift Out Data
No
Done?
Yes
Done
The command sequence to read a single byte of data
is shown in Table 4-2.
TABLE 4-2:
READ DATA EEPROM MEMORY
4-Bit
Command
Data Payload
Core Instruction
Step 1: Direct access to data EEPROM.
0000
0000
9E 7F
9C 7F
BCF
BCF
EECON1, EEPGD
EECON1, CFGS
Step 2: Set the data EEPROM Address Pointer.
0000
0000
0000
0000
0E
6E
OE
6E
<Addr>
62
<AddrH>
63
MOVLW
MOVWF
MOVLW
MOVWF
<Addr>
EEADR
<AddrH>
EEADRH
BSF
EECON1, RD
Step 3: Initiate a memory read.
0000
80 7F
Step 4: Load data into the Serial Data Holding register.
0000
0000
0000
0010
Note 1:
50 61
6E F5
00 00
<MSB><LSB>
MOVF
EEDATA, W, 0
MOVWF TABLAT
NOP
Shift Out Data(1)
The <LSB> is undefined; the <MSB> is the data.
 2010 Microchip Technology Inc.
DS39947B-page 31
PIC18F6XKXX/8XKXX FAMILY
FIGURE 4-4:
1
SHIFT OUT DATA HOLDING REGISTER TIMING (0010)
2
3
4
1
2
3
4
5
6
7
9
8
10 11 12 13 14 15 16
1
2
3
4
PGC
P5
P5A
P6
P14
PGD
0
1
0
LSb 1
0
2
3
4
5
6
MSb
4.5
Verify Data EEPROM
A data EEPROM address may be read via a sequence
of core instructions (4-bit command, ‘0000’) and then
output on PGD via the 4-bit command, ‘0010’ (TABLAT
register). The result may then be immediately compared to the appropriate data in the programmer’s
memory for verification. Refer to Section 4.4 “Read
Data EEPROM Memory” for implementation details of
reading data EEPROM.
4.6
Blank Check
The term, “Blank Check”, means to verify that the
device has no programmed memory cells. All memories must be verified: code memory, data EEPROM, ID
locations and Configuration bits. The Device ID
registers (3FFFFEh:3FFFFFh) should be ignored.
PGD = Output
FIGURE 4-5:
n
n
n
Fetch Next 4-Bit Command
Shift Data Out
PGD = Input
n
PGD = Input
BLANK CHECK FLOW
Start
Blank Check Device
Is
device
blank?
Yes
Continue
No
Abort
A “blank” or “erased” memory cell will read as a ‘1’. So,
Blank Checking a device merely means to verify that all
bytes read as FFh except the Configuration bits. Unused
(reserved) Configuration bits will read ‘0’ (programmed).
Refer to Table 5-1 for blank configuration expect data for
the various PIC18F6XKXX/8XKXX family devices.
Given that Blank Checking is merely code and data
EEPROM verification with FFh expect data, refer to
Section 4.4 “Read Data EEPROM Memory” and
Section 4.2 “Verify Code Memory and ID Locations”
for implementation details.
DS39947B-page 32
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
5.0
CONFIGURATION WORD
5.1
The PIC18F6XKXX/8XKXX family of devices have
several Configuration Words. These bits can be set or
cleared to select various device configurations. All
other memory areas should be programmed and
verified prior to setting Configuration Words. These bits
may be read out normally, even after read or code
protection. See Table 5-1 for a list of Configuration bits
and device IDs, and Table 5-3 for the Configuration bit
descriptions.
TABLE 5-1:
ID Locations
A user may store Identification information (ID) in eight
ID locations, mapped in 200000h:200007h. It is recommended that the Most Significant nibble of each ID be
Fh. In doing so, if the user code inadvertently tries to
execute from the ID space, the ID data will execute as
a NOP.
CONFIGURATION BITS AND DEVICE IDs
File Name
Bit 7
Bit 6
Bit 5
300000h
CONFIG1L
—
XINST
—
300001h
CONFIG1H
IESO
FCMEN
—
300002h
CONFIG2L
—
BORPW1 BORPW0
300003h
CONFIG2H
—
WDTPS4
300004h
CONFIG3L
WAIT(3,4)
BW(3,4)
300005h
CONFIG3H
MCLRE
—
300006h
CONFIG4L
DEBUG
300008h
CONFIG5L
CP7(1)
WDTPS3
Bit 4
Bit 3
SOSCSEL1 SOSCSEL0
PLLCFG
FOSC3
Bit 2
Default/
Unprogrammed
Value
Bit 1
Bit 0
INTOSCSEL
—
RETEN
-1-1 11-1
FOSC2
FOSC1
FOSC0
00-0 1000
-111 1111
BORV1
BORV0
BOREN1
BOREN0
PWRTEN
WDTPS2
WDTPS1
WDTPS0
WDTEN1
WDTEN0
-111 1111
EASHFT(3,4)
—
—
RTCSOSC
1111 1--1
MSSP7
—
ECCPMX(3)
CCP2MX
1--- 1-11
ABW1(3,4) ABWO(3,4)
—
—
—
—
BBSIZ0
—
—
—
STVREN
1--1 ---1
CP6(1)
CP5(1)
CP4(1)
CP3
CP2
CP1
CP0
1111 1111
300009h
CONFIG5H
CPD
CPB
—
—
—
—
—
—
11-- ----
30000Ah
CONFIG6L
WRT7(1)
WRT6(1)
WRT5(1)
WRT4(1)
WRT3
WRT2
WRT1
WRT0
1111 1111
30000Bh
CONFIG6H
WRTD
WRTB
WRTC
—
—
—
—
—
111- ----
30000Ch
CONFIG7L
EBRT7(1)
EBRT6(1)
EBTR5(1)
EBTR4(1)
EBTR3
EBTR2
EBTR1
EBTR0
1111 1111
30000Dh
CONFIG7H
—
EBTRB
—
—
—
—
—
—
-1-- ----
3FFFFEh
DEVID1(2)
DEV2
DEV1
DEV0
REV4
REV3
REV2
REV1
REV0
xxxx xxxx
3FFFFFh
DEVID2(2)
DEV10
DEV9
DEV8
DEV7
DEV6
DEV5
DEV4
DEV3
xxxx xxxx
Legend:
Note
1:
2:
3:
4:
x = unknown, u = unchanged, — = unimplemented, q = value depends on condition.
Shaded cells are unimplemented, read as ‘0’.
Unimplemented in PIC18FX5K90/X6K90/X5K22/X6K22 devices.
See Register 25-13 in the “PIC18F87K90 Family Data Sheet” for DEVID1 values. DEVID registers are read-only and cannot be
programmed by the user.
Unimplemented in PIC18F6XKXX devices.
Unimplemented in PIC18FXXK90 devices.
 2010 Microchip Technology Inc.
DS39947B-page 33
PIC18F6XKXX/8XKXX FAMILY
5.2
Device ID Word
FIGURE 5-1:
The Device ID word (DEVID<2:1>) for the
PIC18F6XKXX/8XKXX family of devices is located at
3FFFFEh:3FFFFFh. These bits may be used by the
programmer to identify what device type is being
programmed and read out normally, even after code or
read protection. See Table 5-2 for a complete list of
Device ID values.
READ DEVICE ID WORD FLOW
Start
Set TBLPTR = 3FFFFE
Read Low Byte
with Post-Increment
Read High Byte
with Post-Increment
Done
TABLE 5-2:
DEVICE ID VALUE
Device
Note:
Device ID Value
DEVID2
DEVID1
PIC18F65K22
53h
000x xxxx
PIC18F65K90
52h
010x xxxx
PIC18F66K22
52h
110x xxxx
PIC18F66K90
52h
000x xxxx
PIC18F67K22
51h
100x xxxx
PIC18F67K90
51h
000x xxxx
PIC18F85K22
537
011x xxxx
PIC18F85K90
52h
101x xxxx
PIC18F86K22
53h
001x xxxx
PIC18F86K90
52h
011x xxxx
PIC18F87K22
51h
110x xxxx
PIC18F87K90
51h
010x xxxx
The ‘x’s in DEVID1 contain the device revision code.
DS39947B-page 34
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-3:
Bit Name
PIC18F6XKXX/8XKXX FAMILY CONFIGURATION BIT DESCRIPTIONS
Configuration
Words
Description
XINST
CONFIG1L
Extended Instruction Set Enable bit
1 = Instruction set extension and Indexed Addressing mode enabled
0 = Instruction set extension and Indexed Addressing mode disabled (Legacy mode)
SOSCSEL<1:0>
CONFIG1L
SOSC Power Selection and Mode Configuration bits
11 = High-power SOSC circuit selected
10 = Digital (SCLKI) mode
01 = Low-power SOSC circuit selected
00 = Reserved
INTOSCSEL
CONFIG1L
LF-INTOSC Low-Power Enable bit
1 = LF-INTOSC in High-Power mode during Sleep
0 = LF-INTOSC in Low-Power mode during Sleep
RETEN
CONFIG1L
VREG Sleep Enable bit
1 = Regulator power is in Sleep mode, controlled by VREGSLP (WDTCON<7>)
0 = Regulator power is in Sleep mode, controlled by SRETEN (WDTCON<4>).
Ultra low-power regulator is enabled.
IESO
CONFIG1H
Internal External Switchover bit
1 = Two-Speed Start-up is enabled
0 = Two-Speed Start-up is disabled
FCMEN
CONFIG1H
Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor enabled
0 = Fail-Safe Clock Monitor disabled
PLLCFG
CONFIG1H
4 x PLL Enable bit
1 = Oscillator multiplied by 4
0 = Oscillator used directly
FOSC<3:0>
CONFIG1H
Oscillator Selection bits
1101 = EC1, EC oscillator (low power, DC-160 kHz)
1100 = EC1IO, EC oscillator with CLKOUT function on RA6 (low power, DC-160 kHz)
1011 = EC2, EC oscillator (medium power, 160 kHz-4 MHz)
1010 = EC2IO, EC oscillator with CLKOUT function on RA6 (medium power, DC-160 kHz)
1001 = INTIO1, internal RC oscillator with CLKOUT function on RA6
1000 = INTIO2, internal RC oscillator
0111 = RC, external RC oscillator
0110 = RCIO, external RC oscillator with CKLOUT function on RA6
0101 = EC3, EC oscillator (high power, 4 MHz-64 MHz)
0100 = EC3IO, EC oscillator with CLKOUT function on RA6 (high power, 4 MHz-64 MHz)
0011 = HS1, HS oscillator (medium power, 4 MHz-16 MHz)
0010 = HS2, HS oscillator (high power, 16 MHz-25 MHz)
0001 = XT oscillator
0000 = LP oscillator
BORPWR<1:0>
CONFIG2L
BORMV Power Level bits
11 = ZPBORMV instead of BORMV is selected
10 = BORMV is set to high-power level
01 = BORMV is set to medium power level
00 = BORMV is set to low-power level
BORV<1:0>
CONFIG2L
Brown-out Reset Voltage bits
11 = VBOR set to 1.8V
10 = VBOR set to 2.0V
01 = VBOR set to 2.7V
00 = VBOR set to 3.0V
Note 1:
2:
3:
The BBSIZ0 bit cannot be changed once any of the following code-protect bits are enabled: CPB or CP0, WRTB or
WRT0, EBTRB or EBTR0.
Available on PIC18F8XKXX devices only.
Available on PIC18F8XK22 devices only.
 2010 Microchip Technology Inc.
DS39947B-page 35
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-3:
Bit Name
PIC18F6XKXX/8XKXX FAMILY CONFIGURATION BIT DESCRIPTIONS (CONTINUED)
Configuration
Words
Description
BOREN<1:0>
CONFIG2L
Brown-out Reset Enable bits
11 = Brown-out Reset enabled in hardware only (SBOREN is disabled)
10 = Brown-out Reset enabled in hardware only and disabled in Sleep mode
(SBOREN is disabled)
01 = Brown-out Reset enabled and controlled by software (SBOREN is enabled)
00 = Brown-out Reset disabled in hardware and software
PWRTEN
CONFIG2L
Power-up Timer Enable bit
1 = PWRT disabled
0 = PWRT enabled
WDTPS<4:0>
CONFIG2H
Watchdog Timer Postscale Select bits
10101-11111: Reserved
10100 = 1:1048576
10011 = 1:524288
10010 = 1:262144
10001 = 1:131072
10000 = 1:65536
01111 = 1:32,768
01110 = 1:16,384
01101 = 1:8,192
01100 = 1:4,096
01011 = 1:2,048
01010 = 1:1,024
01001 = 1:512
01000 = 1:256
00111 = 1:128
00110 = 1:64
00101 = 1:32
00100 = 1:16
00011 = 1:8
00010 = 1:4
00001 = 1:2
00000 = 1:1
WDTEN<1:0>
CONFIG2H
Watchdog Timer Enable bits
11 = WDT enabled in hardware; SWDTEN bit disabled
10 = WDT controlled with the SWDTEN bit setting
01 = WDT enabled only while device is active and disabled in Sleep; SWDTEN bit disabled
00 = WDT disabled in hardware; SWDTEN bit disabled
WAIT
CONFIG3L
External Bus Wait Enable bit(3)
1 = Wait states for operations on External Memory Bus disabled
0 = Wait states for operations on External Memory Bus enabled
BW
CONFIG3L
Data Bus Width Select bit(3)
1 = 16-Bit External Bus mode
0 = 8-Bit External Bus mode
ABW<1:0>
CONFIG3L
External Memory Bus Configuration bits(3)
11 = 20-Bit Address mode
10 = 16-Bit Address mode
01 = 12-Bit Address mode
00 = 8-Bit Address mode
EASHFT
CONFIG3L
External Address Shift bit(3)
1 = Address shifting enabled – external address bus is shifted to start at 000000h
0 = Address shifting disabled – external address bus reflects the PC value
RTCSOSC
CONFIG3L
RTCC Reference Clock Select bit
1 = RTCC uses SOSC as the reference clock
0 = RTCC uses LF-INTOSC as the reference clock
Note 1:
2:
3:
The BBSIZ0 bit cannot be changed once any of the following code-protect bits are enabled: CPB or CP0, WRTB or
WRT0, EBTRB or EBTR0.
Available on PIC18F8XKXX devices only.
Available on PIC18F8XK22 devices only.
DS39947B-page 36
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-3:
Bit Name
PIC18F6XKXX/8XKXX FAMILY CONFIGURATION BIT DESCRIPTIONS (CONTINUED)
Configuration
Words
Description
MCLRE
CONFIG3H
MCLR Pin Enable bit
1 = MCLR pin enabled, RE3 input pin disabled
0 = RE3 input pin enabled, MCLR pin disabled
MSSP7
CONFIG3H
MSSP V3 7-Bit Address Masking Mode Enable bit
1 = 7-Bit Address Masking mode enable
0 = 5-Bit Address Masking mode enable
ECCPMX
CONFIG3H
ECCP Mux bit(2)
1 = Enhanced CCP1/3 (P1B/P1C/P3B/P3C) are multiplexed onto RE6, RE5, RE4 and
RE3, respectively
0 = Enhanced CCP1/3 (P1B/P1C/P3B/P3C) are multiplexed onto RH7, RH6, RH5 and
RH4, respectively
CCP2MX
CONFIG3H
CCP2 MUX bit
1 = CCP2 input/output is multiplexed with RC1
0 = CCP2 input/output is multiplexed with RB3 in Extended Microcontroller,
Microprocessor or Microprocessor with Boot Block mode
DEBUG
CONFIG4L
Background Debugger Enable bit
1 = Background debugger disabled, RB6 and RB7 configured as general purpose
I/O pins
0 = Background debugger enabled, RB6 and RB7 are dedicated to In-Circuit Debug
BBSIZ0(1)
CONFIG4L
Boot Block Size Select bit
1 = 2K word Boot Block size
0 = 1K word Boot Block size
STVREN
CONFIG4L
Stack Overflow/Underflow Reset Enable bit
1 = Reset on stack overflow/underflow enabled
0 = Reset on stack overflow/underflow disabled
CP7
CONFIG5L
Code Protection bits (Block 7 code memory area)
1 = Block 7 is not code-protected
0 = Block 7 is code-protected
CP6
CONFIG5L
Code Protection bits (Block 6 code memory area)
1 = Block 6 is not code-protected
0 = Block 6 is code-protected
CP5
CONFIG5L
Code Protection bits (Block 5 code memory area)
1 = Block 5 is not code-protected
0 = Block 5 is code-protected
CP4
CONFIG5L
Code Protection bits (Block 4 code memory area)
1 = Block 4 is not code-protected
0 = Block 4 is code-protected
CP3
CONFIG5L
Code Protection bits (Block 3 code memory area)
1 = Block 3 is not code-protected
0 = Block 3 is code-protected
CP2
CONFIG5L
Code Protection bits (Block 2 code memory area)
1 = Block 2 is not code-protected
0 = Block 2 is code-protected
CP1
CONFIG5L
Code Protection bits (Block 1 code memory area)
1 = Block 1 is not code-protected
0 = Block 1 is code-protected
CP0
CONFIG5L
Code Protection bits (Block 0 code memory area)
1 = Block 0 is not code-protected
0 = Block 0 is code-protected
CPD
CONFIG5H
Code Protection bits (Data EEPROM)
1 = Data EEPROM is not code-protected
0 = Data EEPROM is code-protected
Note 1:
2:
3:
The BBSIZ0 bit cannot be changed once any of the following code-protect bits are enabled: CPB or CP0, WRTB or
WRT0, EBTRB or EBTR0.
Available on PIC18F8XKXX devices only.
Available on PIC18F8XK22 devices only.
 2010 Microchip Technology Inc.
DS39947B-page 37
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-3:
Bit Name
PIC18F6XKXX/8XKXX FAMILY CONFIGURATION BIT DESCRIPTIONS (CONTINUED)
Configuration
Words
Description
CPB
CONFIG5H
Code Protection bits (Boot Block memory area)
1 = Boot Block is not code-protected
0 = Boot Block is code-protected
WRT7
CONFIG6L
Write Protection bits (Block 7 code memory area)
1 = Block 7 is not write-protected
0 = Block 7 is write-protected
WRT6
CONFIG6L
Write Protection bits (Block 6 code memory area)
1 = Block 6 is not write-protected
0 = Block 6 is write-protected
WRT5
CONFIG6L
Write Protection bits (Block 5 code memory area)
1 = Block 5 is not write-protected
0 = Block 5 is write-protected
WRT4
CONFIG6L
Write Protection bits (Block 4 code memory area)
1 = Block 4 is not write-protected
0 = Block 4 is write-protected
WRT3
CONFIG6L
Write Protection bits (Block 3 code memory area)
1 = Block 3 is not write-protected
0 = Block 3 is write-protected
WRT2
CONFIG6L
Write Protection bits (Block 2 code memory area)
1 = Block 2 is not write-protected
0 = Block 2 is write-protected
WRT1
CONFIG6L
Write Protection bits (Block 1 code memory area)
1 = Block 1 is not write-protected
0 = Block 1 is write-protected
WRT0
CONFIG6L
Write Protection bits (Block 0 code memory area)
1 = Block 0 is not write-protected
0 = Block 0 is write-protected
WRTD
CONFIG6H
Write Protection bit (Data EEPROM)
1 = Data EEPROM is not write-protected
0 = Data EEPROM is write-protected
WRTB
CONFIG6H
Write Protection bit (Boot Block memory area)
1 = Boot Block is not write-protected
0 = Boot Block is write-protected
WRTC
CONFIG6H
Write Protection bit (Configuration registers)
1 = Configuration registers are not write-protected
0 = Configuration registers are write-protected
EBTR7
CONFIG7L
Table Read Protection bit (Block 7 code memory area)
1 = Block 7 is not protected from table reads executed in other blocks
0 = Block 7 is protected from table reads executed in other blocks
EBTR6
CONFIG7L
Table Read Protection bit (Block 6 code memory area)
1 = Block 6 is not protected from table reads executed in other blocks
0 = Block 6 is protected from table reads executed in other blocks
EBTR5
CONFIG7L
Table Read Protection bit (Block 5 code memory area)
1 = Block 5 is not protected from table reads executed in other blocks
0 = Block 5 is protected from table reads executed in other blocks
EBTR4
CONFIG7L
Table Read Protection bit (Block 4 code memory area)
1 = Block 4 is not protected from table reads executed in other blocks
0 = Block 4 is protected from table reads executed in other blocks
EBTR3
CONFIG7L
Table Read Protection bit (Block 3 code memory area)
1 = Block 3 is not protected from table reads executed in other blocks
0 = Block 3 is protected from table reads executed in other blocks
Note 1:
2:
3:
The BBSIZ0 bit cannot be changed once any of the following code-protect bits are enabled: CPB or CP0, WRTB or
WRT0, EBTRB or EBTR0.
Available on PIC18F8XKXX devices only.
Available on PIC18F8XK22 devices only.
DS39947B-page 38
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-3:
Bit Name
PIC18F6XKXX/8XKXX FAMILY CONFIGURATION BIT DESCRIPTIONS (CONTINUED)
Configuration
Words
Description
EBTR2
CONFIG7L
Table Read Protection bit (Block 2 code memory area)
1 = Block 2 is not protected from table reads executed in other blocks
0 = Block 2 is protected from table reads executed in other blocks
EBTR1
CONFIG7L
Table Read Protection bit (Block 1 code memory area)
1 = Block 1 is not protected from table reads executed in other blocks
0 = Block 1 is protected from table reads executed in other blocks
EBTR0
CONFIG7L
Table Read Protection bit (Block 0 code memory area)
1 = Block 0 is not protected from table reads executed in other blocks
0 = Block 0 is protected from table reads executed in other blocks
EBTRB
CONFIG7H
Table Read Protection bit (Boot Block memory area)
1 = Boot Block is not protected from table reads executed in other blocks
0 = Boot Block is protected from table reads executed in other blocks
DEV<10:3>
DEVID2
Device ID bits
These bits are used with the DEV<2:0> bits in the DEVID1 register to identify part number.
DEV<2:0>
DEVID1
Device ID bits
These bits are used with the DEV<10:3> bits in the DEVID2 register to identify
part number.
REV<4:0>
DEVID1
Revision ID bits
These bits are used to indicate the revision of the device.
Note 1:
2:
3:
The BBSIZ0 bit cannot be changed once any of the following code-protect bits are enabled: CPB or CP0, WRTB or
WRT0, EBTRB or EBTR0.
Available on PIC18F8XKXX devices only.
Available on PIC18F8XK22 devices only.
 2010 Microchip Technology Inc.
DS39947B-page 39
PIC18F6XKXX/8XKXX FAMILY
5.3
Embedding Configuration Word
Information in the HEX File
To allow portability of code, a PIC18F6XKXX/8XKXX
device programmer is required to read the Configuration Word locations from the hex file. If Configuration
Word information is not present in the hex file, then a
simple warning message should be issued. Similarly,
while saving a hex file, all Configuration Word information must be included. An option to not include the
Configuration Word information may be provided.
When embedding Configuration Word information in
the hex file, it should start at address, 300000h.
Microchip Technology Inc. feels strongly that this
feature is important for the benefit of the end customer.
5.4
Embedding Data EEPROM
Information in the HEX File
To allow portability of code, a PIC18F6XKXX/8XKXX
device programmer is required to read the data
EEPROM information from the hex file. If data
EEPROM information is not present, a simple warning
message should be issued. Similarly, when saving a
hex file, all data EEPROM information must be
included. An option to not include the data EEPROM
information may be provided. When embedding data
EEPROM information in the hex file, it should start at
address F00000h.
5.5
Checksum Computation
The checksum is calculated by summing the following:
• The contents of all code memory locations
• The Configuration Word, appropriately masked
• ID locations
The Least Significant 16 bits of this sum are the
checksum.
Table 5-4 (pages 41 through 46) describes how to
calculate the checksum for each device.
Note:
The checksum calculation differs depending on the code-protect setting. Since the
code memory locations read out differently
depending on the code-protect setting, the
table describes how to manipulate the
actual code memory values to simulate
the values that would be read from a
protected device. When calculating a
checksum by reading a device, the entire
code memory can simply be read and
summed. The Configuration Word and ID
locations can always be read.
Microchip Technology Inc. believes that this feature is
important for the benefit of the end customer.
DS39947B-page 40
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
CHECKSUM COMPUTATION
Blank
Value
0xAA at 0
and Max
Address
0xA40B
0xA361
Boot Block SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) + SUM(6000:7FFF) +
0xAC43
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0xABEE
CodeProtect
Device
None
PIC18F65K90
Boot/
Panel0/
Panel1
Checksum
SUM(0000:0FFF) + SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) +
SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
SUM(4000:5FFF) + SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0xD440
(CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) +
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0xD3EB
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0434
0x0434
0xA40B
SUM(0000:0FFF) + SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) +
SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0xA361
0xAC43
Boot Block SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) + SUM(6000:7FFF) +
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F65K22
Boot/
SUM(4000:5FFF) + SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0xD440
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0xABEE
0x0434
0x0434
All
None
All
Legend:
Item
CFGW
SUM[a:b]
SUM_ID
+
&
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
=
=
=
=
=
0xD3EB
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
DS39947B-page 41
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
CHECKSUM COMPUTATION (CONTINUED)
Blank
Value
0xAA at 0
and Max
Address
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x040B
0x0361
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0C43
0x0BEE
CodeProtect
Device
None
PIC18F66K90
Checksum
Boot/
Panel0/
Panel1
SUM(8000:BFFF) + SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) +
(CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) +
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0x8440
0x83EB
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0434
0x0434
None
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x040B
0x0361
0x0C43
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F66K22
Boot/
SUM(8000:BFFF) + SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0x8440
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0x0BEE
All
Legend:
Item
CFGW
SUM[a:b]
SUM_ID
+
&
DS39947B-page 42
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
=
=
=
=
=
0x0434
0x83EB
0x0434
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
CHECKSUM COMPUTATION (CONTINUED)
Blank
Value
0xAA at 0
and Max
Address
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
89) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x06DB
0x0631
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
2K words SUM(10000:13FFF) + SUM(14000:17FFF) + SUM(18000:1BFFF) +
SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) +
PIC18F67K90
(CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x0F13
0x0EBE
Device
CodeProtect
None
Checksum
Boot/
Panel0/
Panel1
SUM(8000:BFFF) + SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
89) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x8710
0x86BB
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) + (CONFIG6H & E0) +
(CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x0614
0x0614
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
0x06DB
SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
89) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x0631
None
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
2K words SUM(10000:13FFF) + SUM(14000:17FFF) + SUM(18000:1BFFF) +
SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) +
PIC18F67K22
(CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
Legend:
0x0F13
0x0EBE
Boot/
Panel0/
Panel1
SUM(8000:BFFF) + SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
89) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x8710
0x86BB
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 89) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) + (CONFIG6H & E0) +
(CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x0614
0x0614
Item
CFGW
SUM[a:b]
SUM_ID
+
&
=
=
=
=
=
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
DS39947B-page 43
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
Device
CHECKSUM COMPUTATION (CONTINUED)
CodeProtect
Blank
Value
Checksum
0xAA at 0
and Max
Address
0xA40D
SUM(0000:0FFF) + SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) +
SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x8363
Boot Block SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) + SUM(6000:7FFF) +
0xAC45
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F85K90
Boot/
SUM(4000:5FFF) + SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0xD442
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 8B) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0xABF0
None
0xD3ED
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0436
0x0436
None
SUM(0000:0FFF) + SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) +
SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0xA505
0xA45B
0xAD3D 0xACE8
Boot Block SUM(1000:17FF) + SUM(1800:3FFF) + SUM(4000:5FFF) + SUM(6000:7FFF) +
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F85K22
Boot/
SUM(4000:5FFF) + SUM(6000:7FFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0xD53A 0xD4E5
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H & 8B) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
All
Legend:
Item
CFGW
SUM[a:b]
SUM_ID
+
&
DS39947B-page 44
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + 0x052E
(CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
=
=
=
=
=
0x052E
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
Device
CHECKSUM COMPUTATION (CONTINUED)
CodeProtect
None
Checksum
Blank
Value
0xAA at 0
and Max
Address
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
0x040D
SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0363
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
0x0C45
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F86K90
Boot/
SUM(8000:BFFF) + SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0x8442
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 8B) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0x0BF0
0x83ED
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0436
0x0436
None
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) +
(CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x0505
0x045B
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
0x0D3D
2K words (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
PIC18F86K22
Boot/
SUM(8000:BFFF) + SUM(C000:FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + 0x853A
Panel0/ (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H & 8B) +
Panel1
(CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & 0F) + (CONFIG5H & C0) +
(CONFIG6L & 0F) + (CONFIG6H & E0) + (CONFIG7L & 0F) + (CONFIG7H & 40) +
SUM(IDs)
0x0CE8
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + 0x052E
(CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & 0F) + (CONFIG5H & C0) + (CONFIG6L & 0F) + (CONFIG6H & E0) +
(CONFIG7L & 0F) + (CONFIG7H & 40) + SUM(IDs)
0x052E
All
Legend:
Item
CFGW
SUM[a:b]
SUM_ID
+
&
=
=
=
=
=
0x84E5
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
DS39947B-page 45
PIC18F6XKXX/8XKXX FAMILY
TABLE 5-4:
Device
CHECKSUM COMPUTATION (CONTINUED)
CodeProtect
None
Blank
Value
Checksum
0xAA at 0
and Max
Address
0x06DD
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
8B) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x0633
0x0F15
0x0EC0
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
2K words SUM(10000:13FFF) + SUM(14000:17FFF) + SUM(18000:1BFFF) +
SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) +
PIC18F87K90
(CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
Boot/
Panel0/
Panel1
SUM(8000:BFFF) + SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & 01) + (CONFIG3H &
8B) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x8712
0x86BD
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) +
(CONFIG3L & 01) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) + (CONFIG6H & E0) +
(CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x0616
0x0616
0x07D5
SUM(0000:0FFF) + SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) +
SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) +
SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H &
8B) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x072B
Boot Block SUM(1000:3FFF) + SUM(4000:7FFF) + SUM(8000:BFFF) + SUM(C000:FFFF) +
0x100D
2K words SUM(10000:13FFF) + SUM(14000:17FFF) + SUM(18000:1BFFF) +
SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) +
(CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) +
(CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) +
PIC18F87K22
(CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x0FB8
None
Legend:
Boot/
Panel0/
Panel1
SUM(8000:BFFF) + SUM(C000:FFFF) + SUM(10000:13FFF) + SUM(14000:17FFF) 0x880A
+ SUM(18000:1BFFF) + SUM(1C000:1FFFF) + (CONFIG1L & 5D) + (CONFIG1H &
DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + (CONFIG3L & F9) + (CONFIG3H &
8B) + (CONFIG4L & 91) + (CONFIG4H & 00) + (CONFIG5L & FF) + (CONFIG5H &
C0) + (CONFIG6L & FF) + (CONFIG6H & E0) + (CONFIG7L & FF) + (CONFIG7H &
40) + SUM(IDs)
0x87B5
All
(CONFIG1L & 5D) + (CONFIG1H & DF) + (CONFIG2L & 7F) + (CONFIG2H & 7F) + 0x070E
(CONFIG3L & F9) + (CONFIG3H & 8B) + (CONFIG4L & 91) + (CONFIG4H & 00) +
(CONFIG5L & FF) + (CONFIG5H & C0) + (CONFIG6L & FF) + (CONFIG6H & E0) +
(CONFIG7L & FF) + (CONFIG7H & 40) + SUM(IDs)
0x070E
Item
CFGW
SUM[a:b]
SUM_ID
+
&
DS39947B-page 46
=
=
=
=
=
Description
Configuration Word
Sum of locations, a to b inclusive
Byte-wise sum of lower four bits of all customer ID locations
Addition
Bit-wise AND
 2010 Microchip Technology Inc.
PIC18F6XKXX/8XKXX FAMILY
6.0
AC/DC CHARACTERISTICS TIMING REQUIREMENTS
FOR PROGRAM/VERIFY TEST MODE
Standard Operating Conditions
Operating Temperature: 25C is recommended
Param
No.
Sym
Characteristic
D110
VIHH
High-Voltage Programming Voltage on
MCLR/VPP/RG5
D111
VDD
Supply Voltage during Programming
Min
Max
Units
Conditions
VDD + 1.5
10
V
2.1
5.50
V
Row Erase/Write
2.7
5.50
V
Block Erase operations
D112
IPP
Programming Current on MCLR/VPP/RG5
—
600
A
D113
IDDP
Supply Current during Programming
—
3.0
mA
D031
VIL
Input Low Voltage
VSS
0.2 VDD
V
D041
VIH
Input High Voltage
0.8 VDD
VDD
V
D080
VOL
Output Low Voltage
—
0.6
V
IOL = 8.5 mA @ 4.5V
D090
VOH
Output High Voltage
VDD – 0.7
—
V
IOH = -3.0 mA @ 4.5V
D012
CIO
Capacitive Loading on I/O pin (PGD)
—
50
pF
To meet AC specifications
P1
TR
MCLR/VPP/RG5 Rise Time to Enter
Program/Verify mode
—
1.0
s
(Note 1)
P2
TPGC
Serial Clock (PGC) Period
100
—
ns
VDD = 5.0V
1
—
s
VDD = 2.0V
P2A
TPGCL
Serial Clock (PGC) Low Time
40
—
ns
VDD = 5.0V
400
—
ns
VDD = 2.0V
40
—
ns
VDD = 5.0V
VDD = 2.0V
P2B
TPGCH
Serial Clock (PGC) High Time
400
—
ns
P3
TSET1
Input Data Setup Time to Serial Clock 
15
—
ns
P4
THLD1
Input Data Hold Time from PGC
15
—
ns
P5
TDLY1
Delay between 4-Bit Command and Command
Operand
40
—
ns
P5A
TDLY1A Delay between 4-Bit Command Operand and Next
4-bit Command
40
—
ns
P6
TDLY2
Delay between Last PGC  of Command Byte to
First PGC  of Read of Data Word
20
—
ns
P9
TDLY5
PGC High Time (minimum programming time)
1
—
ms
Externally timed
P9A
TDLY5A PGC High Time
5
—
ms
Configuration Word
programming time
P10
TDLY6
PGC Low Time after Programming
(high-voltage discharge time)
100
—
s
P11
TDLY7
Delay to allow Self-Timed Data Write or
Block Erase to Occur
5
—
ms
P11A
TDRWT
Data Write Polling Time
4
—
ms
Note 1:
Do not allow excess time when transitioning MCLR between VIL and VIHH; this can cause spurious program
executions to occur. The maximum transition time is:
1 TCY + TPWRT (if enabled) + 1024 TOSC (for LP, HS, HS/PLL and XT modes only) +
2 ms (for HS/PLL mode only) + 1.5 s (for EC mode only)
where TCY is the instruction cycle time, TPWRT is the Power-up Timer period and TOSC is the oscillator period. For
specific values, refer to the Electrical Characteristics section of the device data sheet for the particular device.
 2010 Microchip Technology Inc.
DS39947B-page 47
PIC18F6XKXX/8XKXX FAMILY
6.0
AC/DC CHARACTERISTICS TIMING REQUIREMENTS
FOR PROGRAM/VERIFY TEST MODE (CONTINUED)
Standard Operating Conditions
Operating Temperature: 25C is recommended
Param
No.
Sym
Characteristic
Min
Max
Units
P12
THLD2
Input Data Hold Time from MCLR/VPP/RG5 
250
—
s
P13
TSET2
VDD Setup Time to MCLR/VPP/RG5 
100
—
ns
P14
TVALID
Data Out Valid from PGC 
10
—
ns
P15
TDLY8
Delay between Last PGC  and MCLR/VPP/RG5 
0
—
s
P16
THLD3
MCLR/VPP/RG5 to VDD 
—
100
ns
P17
THLD3
MCLR/VPP/RE3 to VDD
—
100
ns
Note 1:
Conditions
Do not allow excess time when transitioning MCLR between VIL and VIHH; this can cause spurious program
executions to occur. The maximum transition time is:
1 TCY + TPWRT (if enabled) + 1024 TOSC (for LP, HS, HS/PLL and XT modes only) +
2 ms (for HS/PLL mode only) + 1.5 s (for EC mode only)
where TCY is the instruction cycle time, TPWRT is the Power-up Timer period and TOSC is the oscillator period. For
specific values, refer to the Electrical Characteristics section of the device data sheet for the particular device.
DS39947B-page 48
 2010 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, 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, Octopus, 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.
© 2010, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-60932-376-9
Microchip received ISO/TS-16949:2002 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.
 2010 Microchip Technology Inc.
DS39947B-page 49
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
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07/15/10
DS39947B-page 50
 2010 Microchip Technology Inc.