Features
• Incorporates the ARM7TDMI® ARM® Thumb® Processor
•
•
•
•
•
•
•
•
•
•
•
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– EmbeddedICE™ In-circuit Emulation, Debug Communication Channel Support
Internal High-speed Flash
– 512 Kbytes, Organized in Two Contiguous Banks of 1024 Pages of 256 Bytes Dual
Plane (AT91SAM7SE512)
– 256 Kbytes (AT91SAM7SE256) Organized in One Bank of 1024 Pages of 256 Bytes
Single Plane (AT91SAM7SE256)
– 32 Kbytes (AT91SAM7SE32) Organized in One Bank of 256 Pages of 128 Bytes
Single Plane (AT91SAM7SE32)
– Single Cycle Access at Up to 30 MHz in Worst Case Conditions
– Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed
– Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase Time: 15 ms
– 10,000 Erase Cycles, 10-year Data Retention Capability, Sector Lock Capabilities,
Flash Security Bit
– Fast Flash Programming Interface for High Volume Production
32 Kbytes (AT91SAM7SE512/256) or 8 Kbytes (AT91SAM7SE32) of Internal
High-speed SRAM, Single-cycle Access at Maximum Speed
One External Bus Interface (EBI)
– Supports SDRAM, Static Memory, Glueless Connection to CompactFlash® and
ECC-enabled NAND Flash
Memory Controller (MC)
– Embedded Flash Controller
– Memory Protection Unit
– Abort Status and Misalignment Detection
Reset Controller (RSTC)
– Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout
Detector
– Provides External Reset Signal Shaping and Reset Source Status
Clock Generator (CKGR)
– Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and One PLL
Power Management Controller (PMC)
– Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and
Idle Mode
– Three Programmable External Clock Signals
Advanced Interrupt Controller (AIC)
– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
– Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt
Protected
Debug Unit (DBGU)
– Two-wire UART and Support for Debug Communication Channel interrupt,
Programmable ICE Access Prevention
– Mode for General Purpose Two-wire UART Serial Communication
Periodic Interval Timer (PIT)
– 20-bit Programmable Counter plus 12-bit Interval Counter
Windowed Watchdog (WDT)
– 12-bit key-protected Programmable Counter
Product
Description
AT91SAM7SE512
AT91SAM7SE256
AT91SAM7SE32
Summary
Preliminary
NOTE: This is a summary document.
The complete document is available on
the Atmel website at www.atmel.com.
6222ES–ATARM–15-Dec-09
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
2
– Provides Reset or Interrupt Signals to the System
– Counter May Be Stopped While the Processor is in Debug State or in Idle Mode
Real-time Timer (RTT)
– 32-bit Free-running Counter with Alarm
– Runs Off the Internal RC Oscillator
Three Parallel Input/Output Controllers (PIO)
– Eighty-eight Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os
– Input Change Interrupt Capability on Each I/O Line
– Individually Programmable Open-drain, Pull-up Resistor and Synchronous Output
– Schmitt Trigger on All inputs
Eleven Peripheral DMA Controller (PDC) Channels
One USB 2.0 Full Speed (12 Mbits per second) Device Port
– On-chip Transceiver, Eight Endpoints, 2688-byte Configurable Integrated FIFOs
One Synchronous Serial Controller (SSC)
– Independent Clock and Frame Sync Signals for Each Receiver and Transmitter
– I²S Analog Interface Support, Time Division Multiplex Support
– High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer
Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)
– Individual Baud Rate Generator, IrDA® Infrared Modulation/Demodulation
– Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support
– Full Modem Line Support on USART1
One Master/Slave Serial Peripheral Interfaces (SPI)
– 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects
One Three-channel 16-bit Timer/Counter (TC)
– Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel
– Double PWM Generation, Capture/Waveform Mode, Up/Down Capability
One Four-channel 16-bit PWM Controller (PWMC)
One Two-wire Interface (TWI)
– Master, Multi-Master and Slave Mode Support, All Two-wire Atmel EEPROMs Supported
– General Call Supported in Slave Mode
One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
SAM-BA®
– Default Boot program
– Interface with SAM-BA Graphic User Interface
IEEE® 1149.1 JTAG Boundary Scan on All Digital Pins
Four High-current Drive I/O lines, Up to 16 mA Each
Power Supplies
– Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components
– 1.8V or 3,3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply
– 1.8V VDDCORE Core Power Supply with Brownout Detector
Fully Static Operation:
– Up to 55 MHz at 1.8V and 85° C Worst Case Conditions
– Up to 48 MHz at 1.65V and 85° C Worst Case Conditions
Available in a 128-lead LQFP Green Package, or a 144-ball LFBGA RoHS-compliant Package
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
1. Description
Atmel's AT91SAM7SE Series is a member of its Smart ARM Microcontroller family based on the
32-bit ARM7™ RISC processor and high-speed Flash memory.
• AT91SAM7SE512 features a 512 Kbyte high-speed Flash and a 32 Kbyte SRAM.
• AT91SAM7SE256 features a 256 Kbyte high-speed Flash and a 32 Kbyte SRAM.
• AT91SAM7SE32 features a 32 Kbyte high-speed Flash and an 8 Kbyte SRAM.
It also embeds a large set of peripherals, including a USB 2.0 device, an External Bus Interface
(EBI), and a complete set of system functions minimizing the number of external components.
The EBI incorporates controllers for synchronous DRAM (SDRAM) and Static memories and
features specific circuitry facilitating the interface for NAND Flash, SmartMedia and
CompactFlash.
The device is an ideal migration path for 8/16-bit microcontroller users looking for additional performance, extended memory and higher levels of system integration.
The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via
a parallel interface on a production programmer prior to mounting. Built-in lock bits and a security bit protect the firmware from accidental overwrite and preserve its confidentiality.
The AT91SAM7SE Series system controller includes a reset controller capable of managing the
power-on sequence of the microcontroller and the complete system. Correct device operation
can be monitored by a built-in brownout detector and a watchdog running off an integrated RC
oscillator.
By combining the ARM7TDMI processor with on-chip Flash and SRAM, and a wide range of
peripheral functions, including USART, SPI, External Bus Interface, Timer Counter, RTT and
Analog-to-Digital Converters on a monolithic chip, the AT91SAM7SE512/256/32 is a powerful
device that provides a flexible, cost-effective solution to many embedded control applications.
1.1
Configuration Summary of the AT91SAM7SE512, AT91SAM7SE256 and AT91SAM7SE32
The AT91SAM7SE512, AT91SAM7SE256 and AT91SAM7SE32 differ in memory sizes and
organization. Table 1-1 below summarizes the configurations for the three devices.
Table 1-1.
Configuration Summary
Device
Flash Size
Flash Organization
RAM Size
AT91SAM7SE512
512K bytes
dual plane
32K bytes
AT91SAM7SE256
256K bytes
single plane
32K bytes
AT91SAM7SE32
32K bytes
single plane
8K bytes
3
6222ES–ATARM–15-Dec-09
2. Block Diagram
Figure 2-1.
AT91SAM7SE512/256/32 Block Diagram Signal Description
ICE
TDI
TDO
TMS
TCK
ARM7TDMI
Processor
JTAG
SCAN
JTAGSEL
TST
1.8V
Voltage
Regulator
System Controller
FIQ
DRXD
DTXD
DBGU
VDDCORE
Memory Controller
Embedded
Address
Flash
Decoder
Controller
AIC
PIO
IRQ0-IRQ1
PDC
Abort
Status
PDC
VDDIO
SRAM
32 Kbytes (SE512/256)
or
8 Kbytes (SE32)
Misalignment
Detection
PCK0-PCK2
PLLRC
PLL
XIN
XOUT
OSC
VDDIN
GND
VDDOUT
VDDFLASH
Flash
Memory Protection
Unit
512 Kbytes (SE512)
256 Kbytes (SE256)
32 Kbytes (SE32)
PMC
ERASE
RCOSC
Peripheral Bridge
VDDFLASH
VDDCORE
VDDCORE
BOD
POR
Reset
Controller
ROM
Peripheral DMA
Controller
11 Channels
PIT
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN1
Fast Flash
Programming
Interface
NRST
APB
WDT
SAM-BA
RTT
PIOA
PIOC
EBI
PIOB
PDC
USART0
SDRAM
Controller
PDC
PDC
SPI
Static Memory
Controller
PDC
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
TC0
ECC
Controller
FIFO
TC1
USB Device
TC2
DDM
DDP
PDC
PWMC
PDC
PIO
ADC
SSC
PDC
TWI
4
SDCK
Transciever
Timer Counter
ADVREF
PIO
USART1
TCLK0
TCLK1
TCLK2
ADTRG
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
CompactFlash
NAND Flash
PDC
PDC
PIO
RXD0
TXD0
SCK0
RTS0
CTS0
RXD1
TXD1
SCK1
RTS1
CTS1
DCD1
DSR1
DTR1
RI1
NPCS0
NPCS1
NPCS2
NPCS3
MISO
MOSI
SPCK
D[31:0]
A0/NBS0
A1/NBS2
A[15:2], A[20:18]
A21/NANDALE
A22/REG/NANDCLE
A16/BA0
A17/BA1
NCS0
NCS1/SDCS
NCS2/CFCS1
NCS3/NANDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NBS3/CFIOW
SDCKE
RAS
CAS
SDWE
SDA10
CFRNW
NCS4/CFCS0
NCS5/CFCE1
NCS6/CFCE2
NCS7
NANDOE
NANDWE
NWAIT
PWM0
PWM1
PWM2
PWM3
TF
TK
TD
RD
RK
RF
TWD
TWCK
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
3. Signal Description
Table 3-1.
Signal Description List
Signal Name
Function
Type
Active
Level
Comments
Power
VDDIN
Voltage Regulator and ADC Power
Supply Input
Power
3V to 3.6V
VDDOUT
Voltage Regulator Output
Power
1.85V
VDDFLASH
Flash and USB Power Supply
Power
3V to 3.6V
VDDIO
I/O Lines Power Supply
Power
3V to 3.6V or 1.65V to 1.95V
VDDCORE
Core Power Supply
Power
1.65V to 1.95V
VDDPLL
PLL
Power
1.65V to 1.95V
GND
Ground
Ground
Clocks, Oscillators and PLLs
XIN
Main Oscillator Input
XOUT
Main Oscillator Output
PLLRC
PLL Filter
PCK0 - PCK2
Programmable Clock Output
Input
Output
Input
Output
ICE and JTAG
TCK
Test Clock
Input
No pull-up resistor
TDI
Test Data In
Input
No pull-up resistor
TDO
Test Data Out
TMS
Test Mode Select
Input
No pull-up resistor.
JTAGSEL
JTAG Selection
Input
Pull-down resistor(1)
Output
Flash Memory
ERASE
Flash and NVM Configuration Bits Erase
Command
Input
High
Pull-down resistor (1)
I/O
Low
Open drain with pull-up resistor (1)
Input
High
Pull-down resistor (1)
Reset/Test
NRST
Microcontroller Reset
TST
Test Mode Select
Debug Unit
DRXD
Debug Receive Data
Input
DTXD
Debug Transmit Data
Output
AIC
IRQ0 - IRQ1
External Interrupt Inputs
Input
FIQ
Fast Interrupt Input
Input
5
6222ES–ATARM–15-Dec-09
Table 3-1.
Signal Description List (Continued)
Signal Name
Function
Type
Active
Level
Comments
PIO
PA0 - PA31
Parallel IO Controller A
I/O
Pulled-up input at reset
PB0 - PB31
Parallel IO Controller B
I/O
Pulled-up input at reset
PC0 - PC23
Parallel IO Controller C
I/O
Pulled-up input at reset
USB Device Port
DDM
USB Device Port Data -
Analog
DDP
USB Device Port Data +
Analog
USART
SCK0 - SCK1
Serial Clock
I/O
TXD0 - TXD1
Transmit Data
I/O
RXD0 - RXD1
Receive Data
Input
RTS0 - RTS1
Request To Send
CTS0 - CTS1
Clear To Send
Input
DCD1
Data Carrier Detect
Input
DTR1
Data Terminal Ready
DSR1
Data Set Ready
Input
RI1
Ring Indicator
Input
Output
Output
Synchronous Serial Controller
TD
Transmit Data
Output
RD
Receive Data
Input
TK
Transmit Clock
I/O
RK
Receive Clock
I/O
TF
Transmit Frame Sync
I/O
RF
Receive Frame Sync
I/O
Timer/Counter
TCLK0 - TCLK2
External Clock Inputs
Input
TIOA0 - TIOA2
Timer Counter I/O Line A
I/O
TIOB0 - TIOB2
Timer Counter I/O Line B
I/O
PWM Controller
PWM0 - PWM3
PWM Channels
Output
Serial Peripheral Interface
MISO
Master In Slave Out
I/O
MOSI
Master Out Slave In
I/O
SPCK
SPI Serial Clock
I/O
NPCS0
SPI Peripheral Chip Select 0
I/O
Low
NPCS1-NPCS3
SPI Peripheral Chip Select 1 to 3
Output
Low
6
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
Table 3-1.
Signal Description List (Continued)
Signal Name
Function
Type
Active
Level
Comments
Two-Wire Interface
TWD
Two-wire Serial Data
I/O
TWCK
Two-wire Serial Clock
I/O
Analog-to-Digital Converter
AD0-AD3
Analog Inputs
Analog
Digital pulled-up inputs at reset
AD4-AD7
Analog Inputs
Analog
Analog Inputs
ADTRG
ADC Trigger
ADVREF
ADC Reference
Input
Analog
Fast Flash Programming Interface
PGMEN0-PGMEN2
Programming Enabling
Input
PGMM0-PGMM3
Programming Mode
Input
PGMD0-PGMD15
Programming Data
I/O
PGMRDY
Programming Ready
Output
High
PGMNVALID
Data Direction
Output
Low
PGMNOE
Programming Read
Input
Low
PGMCK
Programming Clock
Input
PGMNCMD
Programming Command
Input
Low
External Bus Interface
D[31:0]
Data Bus
A[22:0]
Address Bus
NWAIT
External Wait Signal
I/O
Output
Input
Low
Static Memory Controller
NCS[7:0]
Chip Select Lines
Output
Low
NWR[1:0]
Write Signals
Output
Low
NRD
Read Signal
Output
Low
NWE
Write Enable
Output
Low
NUB
NUB: Upper Byte Select
Output
Low
NLB
NLB: Lower Byte Select
Output
Low
EBI for CompactFlash Support
CFCE[2:1]
CompactFlash Chip Enable
Output
Low
CFOE
CompactFlash Output Enable
Output
Low
CFWE
CompactFlash Write Enable
Output
Low
CFIOR
CompactFlash I/O Read Signal
Output
Low
CFIOW
CompactFlash I/O Write Signal
Output
Low
CFRNW
CompactFlash Read Not Write Signal
Output
CFCS[1:0]
CompactFlash Chip Select Lines
Output
Low
7
6222ES–ATARM–15-Dec-09
Table 3-1.
Signal Name
Signal Description List (Continued)
Function
Type
Active
Level
Comments
EBI for NAND Flash Support
NANDCS
NAND Flash Chip Select Line
Output
Low
NANDOE
NAND Flash Output Enable
Output
Low
NANDWE
NAND Flash Write Enable
Output
Low
NANDCLE
NAND Flash Command Line Enable
Output
Low
NANDALE
NAND Flash Address Line Enable
Output
Low
SDRAM Controller
SDCK
SDRAM Clock
Output
SDCKE
SDRAM Clock Enable
Output
High
SDCS
SDRAM Controller Chip Select Line
Output
Low
BA[1:0]
Bank Select
Output
SDWE
SDRAM Write Enable
Output
Low
RAS - CAS
Row and Column Signal
Output
Low
NBS[3:0]
Byte Mask Signals
Output
Low
SDA10
SDRAM Address 10 Line
Output
Note:
8
Tied low after reset
1. Refer to Section 6. “/O Lines Considerations” on page 15.
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
4. Package
The AT91SAM7SE512/256/32 is available in:
• 20 x 14 mm 128-lead LQFP package with a 0.5 mm lead pitch.
• 10x 10 x 1.4 mm 144-ball LFBGA package with a 0.8 mm lead pitch
4.1
128-lead LQFP Package Outline
Figure 4-1 shows the orientation of the 128-lead LQFP package and a detailed mechanical
description is given in the Mechanical Characteristics section of the full datasheet.
Figure 4-1.
128-lead LQFP Package Outline (Top View)
102
65
103
64
128
39
1
38
9
6222ES–ATARM–15-Dec-09
4.2
128-lead LQFP Pinout
Table 4-1.
Pinout in 128-lead LQFP Package
1
ADVREF
33
PB31
65
TDI
97
SDCK
2
GND
34
PB30
66
TDO
98
PC8
3
AD7
35
PB29
67
PB2
99
PC7
4
AD6
36
PB28
68
PB1
100
PC6
5
AD5
37
PB27
69
PB0
101
PC5
6
AD4
38
PB26
70
GND
102
PC4
7
VDDOUT
39
PB25
71
VDDIO
103
PC3
8
VDDIN
40
PB24
72
VDDCORE
104
PC2
9
PA20/PGMD8/AD3
41
PB23
73
NRST
105
PC1
10
PA19/PGMD7/AD2
42
PB22
74
TST
106
PC0
11
PA18/PGMD6/AD1
43
PB21
75
ERASE
107
PA31
12
PA17/PGMD5/AD0
44
PB20
76
TCK
108
PA30
13
PA16/PGMD4
45
GND
77
TMS
109
PA29
14
PA15/PGMD3
46
VDDIO
78
JTAGSEL
110
PA28
15
PA14/PGMD2
47
VDDCORE
79
PC23
111
PA27/PGMD15
16
PA13/PGMD1
48
PB19
80
PC22
112
PA26/PGMD14
17
PA12/PGMD0
49
PB18
81
PC21
113
PA25/PGMD13
18
PA11/PGMM3
50
PB17
82
PC20
114
PA24/PGMD12
19
PA10/PGMM2
51
PB16
83
PC19
115
PA23/PGMD11
20
PA9/PGMM1
52
PB15
84
PC18
116
PA22/PGMD10
21
VDDIO
53
PB14
85
PC17
117
PA21/PGMD9
22
GND
54
PB13
86
PC16
118
VDDCORE
23
VDDCORE
55
PB12
87
PC15
119
GND
24
PA8/PGMM0
56
PB11
88
PC14
120
VDDIO
25
PA7/PGMNVALID
57
PB10
89
PC13
121
DM
26
PA6/PGMNOE
58
PB9
90
PC12
122
DP
27
PA5/PGMRDY
59
PB8
91
PC11
123
VDDFLASH
28
PA4/PGMNCMD
60
PB7
92
PC10
124
GND
29
PA3
61
PB6
93
PC9
125
XIN/PGMCK
30
PA2/PGMEN2
62
PB5
94
GND
126
XOUT
31
PA1/PGMEN1
63
PB4
95
VDDIO
127
PLLRC
32
PA0/PGMEN0
64
PB3
96
VDDCORE
128
VDDPLL
10
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
4.3
144-ball LFBGA Package Outline
Figure 4-2 shows the orientation of the 144-ball LFBGA package and a detailed mechanical
description is given in the Mechanical Characteristics section.
Figure 4-2.
144-ball LFBGA Package Outline (Top View)
12
11
10
9
8
7
6
5
4
3
2
1
Ball A1
A B C D E F G H J K L M
11
6222ES–ATARM–15-Dec-09
4.4
144-ball LFBGA Pinout
Table 4-2.
SAM7SE512/256/32 Pinout for 144-ball LFBGA Package
Pin
Signal Name
Pin
Signal Name
Pin
Signal Name
Pin
Signal Name
A1
PB7
D1
VDDCORE
G1
PC18
K1
PC11
A2
PB8
D2
VDDCORE
G2
PC16
K2
PC6
A3
PB9
D3
PB2
G3
PC17
K3
PC2
A4
PB12
D4
TDO
G4
PC9
K4
PC0
A5
PB13
D5
TDI
G5
VDDIO
K5
PA27/PGMD15
A6
PB16
D6
PB17
G6
GND
K6
PA26/PGMD14
A7
PB22
D7
PB26
G7
GND
K7
GND
A8
PB23
D8
PA14/PGMD2
G8
GND
K8
VDDCORE
A9
PB25
D9
PA12/PGMD0
G9
GND
K9
VDDFLASH
A10
PB29
D10
PA11/PGMM3
G10
AD4
K10
VDDIO
A11
PB30
D11
PA8/PGMM0
G11
VDDIN
K11
VDDIO
A12
PB31
D12
PA7/PGMNVALID
G12
VDDOUT
K12
PA18/PGMD6/AD1
B1
PB6
E1
PC22
H1
PC15
L1
SDCK
B2
PB3
E2
PC23
H2
PC14
L2
PC7
B3
PB4
E3
NRST
H3
PC13
L3
PC4
B4
PB10
E4
TCK
H4
VDDCORE
L4
PC1
B5
PB14
E5
ERASE
H5
VDDCORE
L5
PA29
B6
PB18
E6
TEST
H6
GND
L6
PA24/PGMD12
B7
PB20
E7
VDDCORE
H7
GND
L7
PA21/PGMD9
B8
PB24
E8
VDDCORE
H8
GND
L8
ADVREF
B9
PB28
E9
GND
H9
GND
L9
VDDFLASH
B10
PA4/PGMNCMD
E10
PA9/PGMM1
H10
PA19/PGMD7/AD2
L10
VDDFLASH
B11
PA0/PGMEN0
E11
PA10/PGMM2
H11
PA20/PGMD8/AD3
L11
PA17/PGMD5/AD0
B12
PA1/PGMEN1
E12
PA13/PGMD1
H12
VDDIO
L12
GND
C1
PB0
F1
PC21
J1
PC12
M1
PC8
C2
PB1
F2
PC20
J2
PC10
M2
PC5
C3
PB5
F3
PC19
J3
PA30
M3
PC3
C4
PB11
F4
JTAGSEL
J4
PA28
M4
PA31
C5
PB15
F5
TMS
J5
PA23/PGMD11
M5
PA25/PGMD13
C6
PB19
F6
VDDIO
J6
PA22/PGMD10
M6
DM
C7
PB21
F7
GND
J7
AD6
M7
DP
C8
PB27
F8
GND
J8
AD7
M8
GND
C9
PA6/PGMNOE
F9
GND
J9
VDDCORE
M9
XIN/PGMCK
C10
PA5/PGMRDY
F10
AD5
J10
VDDCORE
M10
XOUT
C11
PA2/PGMEN2
F11
PA15/PGMD3
J11
VDDCORE
M11
PLLRC
C12
PA3
F12
PA16/PGMD4
J12
VDDIO
M12
VDDPLL
12
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
5. Power Considerations
5.1
Power Supplies
The AT91SAM7SE512/256/32 has six types of power supply pins and integrates a voltage regulator, allowing the device to be supplied with only one voltage. The six power supply pin types
are:
• VDDIN pin. It powers the voltage regulator and the ADC; voltage ranges from 3.0V to 3.6V,
3.3V nominal.
• VDDOUT pin. It is the output of the 1.8V voltage regulator.
• VDDIO pin. It powers the I/O lines; two voltage ranges are supported:
– from 3.0V to 3.6V, 3.3V nominal
– or from 1.65V to 1.95V, 1.8V nominal.
• VDDFLASH pin. It powers the USB transceivers and a part of the Flash. It is required for the
Flash to operate correctly; voltage ranges from 3.0V to 3.6V, 3.3V nominal.
• VDDCORE pins. They power the logic of the device; voltage ranges from 1.65V to 1.95V,
1.8V typical. It can be connected to the VDDOUT pin with decoupling capacitor. VDDCORE
is required for the device, including its embedded Flash, to operate correctly.
• VDDPLL pin. It powers the oscillator and the PLL. It can be connected directly to the
VDDOUT pin.
In order to decrease current consumption, if the voltage regulator and the ADC are not used,
VDDIN, ADVREF, AD4, AD5, AD6 and AD7 should be connected to GND. In this case VDDOUT
should be left unconnected.
No separate ground pins are provided for the different power supplies. Only GND pins are provided and should be connected as shortly as possible to the system ground plane.
5.2
Power Consumption
The AT91SAM7SE512/256/32 has a static current of less than 60 µA on VDDCORE at 25°C,
including the RC oscillator, the voltage regulator and the power-on reset when the brownout
detector is deactivated. Activating the brownout detector adds 20 µA static current.
The dynamic power consumption on VDDCORE is less than 80 mA at full speed when running
out of the Flash. Under the same conditions, the power consumption on VDDFLASH does not
exceed 10 mA.
5.3
Voltage Regulator
The AT91SAM7SE512/256/32 embeds a voltage regulator that is managed by the System
Controller.
In Normal Mode, the voltage regulator consumes less than 100 µA static current and draws 100
mA of output current.
The voltage regulator also has a Low-power Mode. In this mode, it consumes less than 20 µA
static current and draws 1 mA of output current.
Adequate output supply decoupling is mandatory for VDDOUT to reduce ripple and avoid oscillations. The best way to achieve this is to use two capacitors in parallel:
13
6222ES–ATARM–15-Dec-09
• One external 470 pF (or 1 nF) NPO capacitor should be connected between VDDOUT and
GND as close to the chip as possible.
• One external 2.2 µF (or 3.3 µF) X7R capacitor should be connected between VDDOUT and
GND.
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability
and reduce source voltage drop. The input decoupling capacitor should be placed close to the
chip. For example, two capacitors can be used in parallel: 100 nF NPO and 4.7 µF X7R.
5.4
Typical Powering Schematics
The AT91SAM7SE512/256/32 supports a 3.3V single supply mode. The internal regulator input
connected to the 3.3V source and its output feeds VDDCORE and the VDDPLL. Figure 5-1
shows the power schematics to be used for USB bus-powered systems.
Figure 5-1.
3.3V System Single Power Supply Schematic
VDDFLASH
Power Source
ranges
from 4.5V (USB)
to 18V
VDDIO
DC/DC Converter
VDDIN
3.3V
VDDOUT
Voltage
Regulator
VDDCORE
VDDPLL
14
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
6. /O Lines Considerations
6.1
JTAG Port Pins
TMS, TDI and TCK are Schmitt trigger inputs. TMS, TDI and TCK do not integrate a pull-up
resistor.
TDO is an output, driven at up to VDDIO, and has no pull-up resistor.
The JTAGSEL pin is used to select the JTAG boundary scan when asserted at a high level. The
JTAGSEL pin integrates a permanent pull-down resistor of about 15 kΩ.
To eliminate any risk of spuriously entering the JTAG boundary scan mode due to noise on
JTAGSEL, it should be tied externally to GND if boundary scan is not used, or put in place an
external low value resistor (such as 1 kΩ) .
6.2
Test Pin
The TST pin is used for manufacturing test or fast programming mode of the
AT91SAM7SE512/256/32 when asserted high. The TST pin integrates a permanent pull-down
resistor of about 15 kΩ to GND.
To eliminate any risk of entering the test mode due to noise on the TST pin, it should be tied to
GND if the FFPI is not used, or put in place an external low value resistor (such as 1 kΩ) .
To enter fast programming mode, the TST pin and the PA0 and PA1 pins should be tied high
and PA2 tied low.
Driving the TST pin at a high level while PA0 or PA1 is driven at 0 leads to unpredictable results.
6.3
Reset Pin
The NRST pin is bidirectional with an open-drain output buffer. It is handled by the on-chip reset
controller and can be driven low to provide a reset signal to the external components or asserted
low externally to reset the microcontroller. There is no constraint on the length of the reset pulse,
and the reset controller can guarantee a minimum pulse length. This allows connection of a simple push-button on the NRST pin as system user reset, and the use of the NRST signal to reset
all the components of the system.
An external power-on reset can drive this pin during the start-up instead of using the internal
power-on reset circuit.
The NRST pin integrates a permanent pull-up of about 100 kΩ resistor to VDDIO.
This pin has Schmitt trigger input.
6.4
ERASE Pin
The ERASE pin is used to re-initialize the Flash content and some of its NVM bits. It integrates a
permanent pull-down resistor of about 15 kΩ to GND.
To eliminate any risk of erasing the Flash due to noise on the ERASE pin, it should be tied externally to GND, which prevents erasing the Flash from the application, or put in place an external
low value resistor (such as 1 kΩ) .
This pin is debounced by the RC oscillator to improve the glitch tolerance. When the pin is tied to
high during less than 100 ms, ERASE pin is not taken into account. The pin must be tied high
during more than 220 ms to perform the re-initialization of the Flash.
15
6222ES–ATARM–15-Dec-09
6.5
SDCK Pin
The SDCK pin is dedicated to the SDRAM Clock and is an output-only without pull-up. Maximum
Output Frequency of this pad is 48 MHz at 3.0V and 25 MHz at 1.65V with a maximum load of
30 pF.
6.6
PIO Controller lines
All the I/O lines PA0 to PA31, PB0 to PB31, PC0 to PC23 integrate a programmable pull-up
resistor. Programming of this pull-up resistor is performed independently for each I/O line
through the PIO controllers.
Typical pull-up value is 100 kΩ.
All the I/O lines have schmitt trigger inputs.
6.7
I/O Lines Current Drawing
The PIO lines PA0 to PA3 are high-drive current capable. Each of these I/O lines can drive up to
16 mA permanently.
The remaining I/O lines can draw only 8 mA.
However, the total current drawn by all the I/O lines cannot exceed 300 mA.
16
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
7. Processor and Architecture
7.1
ARM7TDMI Processor
• RISC processor based on ARMv4T Von Neumann architecture
– Runs at up to 55 MHz, providing 0.9 MIPS/MHz (core supplied with 1.8V)
• Two instruction sets
– ARM® high-performance 32-bit instruction set
– Thumb® high code density 16-bit instruction set
• Three-stage pipeline architecture
– Instruction Fetch (F)
– Instruction Decode (D)
– Execute (E)
7.2
Debug and Test Features
• EmbeddedICE™ (Integrated embedded in-circuit emulator)
– Two watchpoint units
– Test access port accessible through a JTAG protocol
– Debug communication channel
• Debug Unit
– Two-pin UART
– Debug communication channel interrupt handling
– Chip ID Register
• IEEE1149.1 JTAG Boundary-scan on all digital pins
7.3
Memory Controller
• Programmable Bus Arbiter
– Handles requests from the ARM7TDMI and the Peripheral DMA Controller
• Address decoder provides selection signals for
– Four internal 1 Mbyte memory areas
– One 256-Mbyte embedded peripheral area
– Eight external 256-Mbyte memory areas
• Abort Status Registers
– Source, Type and all parameters of the access leading to an abort are saved
– Facilitates debug by detection of bad pointers
• Misalignment Detector
– Alignment checking of all data accesses
– Abort generation in case of misalignment
• Remap Command
– Remaps the SRAM in place of the embedded non-volatile memory
– Allows handling of dynamic exception vectors
• 16-area Memory Protection Unit (Internal Memory and peripheral protection only)
17
6222ES–ATARM–15-Dec-09
– Individually programmable size between 1K Byte and 1M Byte
– Individually programmable protection against write and/or user access
– Peripheral protection against write and/or user access
• Embedded Flash Controller
– Embedded Flash interface, up to three programmable wait states
– Prefetch buffer, buffering and anticipating the 16-bit requests, reducing the required
wait states
– Key-protected program, erase and lock/unlock sequencer
– Single command for erasing, programming and locking operations
– Interrupt generation in case of forbidden operation
7.4
External Bus Interface
• Integrates Three External Memory Controllers:
– Static Memory Controller
– SDRAM Controller
– ECC Controller
• Additional Logic for NAND Flash and CompactFlash® Support
– NAND Flash support: 8-bit as well as 16-bit devices are supported
– CompactFlash support: all modes (Attribute Memory, Common Memory, I/O, True
IDE) are supported but the signals _IOIS16 (I/O and True IDE modes) and -ATA SEL
(True IDE mode) are not handled.
• Optimized External Bus:
– 16- or 32-bit Data Bus (32-bit Data Bus for SDRAM only)
– Up to 23-bit Address Bus, Up to 8-Mbytes Addressable
– Up to 8 Chip Selects, each reserved to one of the eight Memory Areas
– Optimized pin multiplexing to reduce latencies on External Memories
• Configurable Chip Select Assignment:
– Static Memory Controller on NCS0
– SDRAM Controller or Static Memory Controller on NCS1
– Static Memory Controller on NCS2, Optional CompactFlash Support
– Static Memory Controller on NCS3, NCS5 - NCS6, Optional NAND Flash Support
– Static Memory Controller on NCS4, Optional CompactFlash Support
– Static Memory Controller on NCS7
7.5
Static Memory Controller
• External memory mapping, 512-Mbyte address space
• 8-, or 16-bit Data Bus
• Up to 8 Chip Select Lines
• Multiple Access Modes supported
– Byte Write or Byte Select Lines
– Two different Read Protocols for each Memory Bank
18
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
• Multiple device adaptability
– Compliant with LCD Module
– Compliant with PSRAM in synchronous operations
– Programmable Setup Time Read/Write
– Programmable Hold Time Read/Write
• Multiple Wait State Management
– Programmable Wait State Generation
– External Wait Request
– Programmable Data Float Time
7.6
SDRAM Controller
• Numerous configurations supported
– 2K, 4K, 8K Row Address Memory Parts
– SDRAM with two or four Internal Banks
– SDRAM with 16- or 32-bit Data Path
• Programming facilities
– Word, half-word, byte access
– Automatic page break when Memory Boundary has been reached
– Multibank Ping-pong Access
– Timing parameters specified by software
– Automatic refresh operation, refresh rate is programmable
• Energy-saving capabilities
– Self-refresh, and Low-power Modes supported
• Error detection
– Refresh Error Interrupt
• SDRAM Power-up Initialization by software
• Latency is set to two clocks (CAS Latency of 1, 3 Not Supported)
• Auto Precharge Command not used
• Mobile SDRAM supported (except for low-power extended mode and deep power-down
mode)
7.7
Error Corrected Code Controller
• Tracking the accesses to a NAND Flash device by triggering on the corresponding chip select
• Single bit error correction and 2-bit Random detection.
• Automatic Hamming Code Calculation while writing
– ECC value available in a register
• Automatic Hamming Code Calculation while reading
– Error Report, including error flag, correctable error flag and word address being
detected erroneous
– Supports 8- or 16-bit NAND Flash devices with 512-, 1024-, 2048- or 4096-byte
pages
19
6222ES–ATARM–15-Dec-09
7.8
Peripheral DMA Controller
• Handles data transfer between peripherals and memories
• Eleven channels
– Two for each USART
– Two for the Debug Unit
– Two for the Serial Synchronous Controller
– Two for the Serial Peripheral Interface
– One for the Analog-to-digital Converter
• Low bus arbitration overhead
– One Master Clock cycle needed for a transfer from memory to peripheral
– Two Master Clock cycles needed for a transfer from peripheral to memory
• Next Pointer management for reducing interrupt latency requirements
• Peripheral DMA Controller (PDC) priority is as follows (from the highest priority to the lowest):
20
Receive
DBGU
Receive
USART0
Receive
USART1
Receive
SSC
Receive
ADC
Receive
SPI
Transmit
DBGU
Transmit
USART0
Transmit
USART1
Transmit
SSC
Transmit
SPI
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
8. Memories
• 512 Kbytes of Flash Memory (AT91SAM7SE512)
– dual plane
– two contiguous banks of 1024 pages of 256 bytes
– Fast access time, 30 MHz single-cycle access in Worst Case conditions
– Page programming time: 6 ms, including page auto-erase
– Page programming without auto-erase: 3 ms
– Full chip erase time: 15 ms
– 10,000 write cycles, 10-year data retention capability
– 32 lock bits, each protecting 32 lock regions of 64 pages
– Protection Mode to secure contents of the Flash
• 256 Kbytes of Flash Memory (AT91SAM7SE256)
– single plane
– one bank of 1024 pages of 256 bytes
– Fast access time, 30 MHz single-cycle access in Worst Case conditions
– Page programming time: 6 ms, including page auto-erase
– Page programming without auto-erase: 3 ms
– Full chip erase time: 15 ms
– 10,000 cycles, 10-year data retention capability
– 16 lock bits, each protecting 16 lock regions of 64 pages
– Protection Mode to secure contents of the Flash
• 32 Kbytes of Flash Memory (AT91SAM7SE32)
– single plane
– one bank of 256 pages of 128 bytes
– Fast access time, 30 MHz single-cycle access in Worst Case conditions
– Page programming time: 6 ms, including page auto-erase
– Page programming without auto-erase: 3 ms
– Full chip erase time: 15 ms
– 10,000 cycles, 10-year data retention capability
– 8 lock bits, each protecting 8 lock regions of 32 pages
– Protection Mode to secure contents of the Flash
• 32 Kbytes of Fast SRAM (AT91SAM7SE512/256)
– Single-cycle access at full speed
• 8 Kbytes of Fast SRAM (AT91SAM7SE32)
– Single-cycle access at full speed
21
6222ES–ATARM–15-Dec-09
Figure 8-1.
AT91SAM7SE Memory Mapping
Address Memory Space
Internal Memory Mapping
0x0000 0000
0x0000 0000
Internal Memories
256 MBytes
0x0FFF FFFF
EBI
Chip Select 0
SMC
256 MBytes
EBI
Chip Select 1/
SMC or SDRAMC
256 MBytes
Internal Flash
1 MBytes
Internal SRAM
1 MBytes
Internal ROM
1 MBytes
0x001F FFFF
0x0020 0000
0x1FFF FFFF
0x2000 0000
0x002F FFFF
0x0030 0000
0x3000 0000
0x3FFF FFFF
0x4000 0000
0x4FFF FFFF
0x5000 0000
0x5FFF FFFF
0x6000 0000
0x6FFF FFFF
0x7000 0000
1 MBytes
0x000F FFFF
0x0010 0000
0x1000 0000
0x2FFF FFFF
Boot Memory (1)
Flash before Remap
SRAM after Remap
Note:
(1) Can be ROM, Flash or SRAM
depending on GPNVM2 and REMAP
EBI
Chip Select 2
SMC
256 MBytes
EBI
Chip Select 3
SMC/NANDFlash/
SmartMedia
256 MBytes
0x003F FFFF
0x0040 0000
Reserved
252 MBytes
System Controller Mapping
0x0FFF FFFF
EBI
Chip Select 4
SMC
Compact Flash
256 MBytes
EBI
Chip Select 5
SMC
Compact Flash
256 MBytes
EBI
Chip Select 6
256 MBytes
0xFFFF F000
0x7FFF FFFF
256 MBytes
0xFFF9 FFFF
0xFFFA 0000
0xFFFA FFFF
0xFFFB 0000
TC0, TC1, TC2
16 Kbytes
512 Bytes/128 registers
PIOB
512 Bytes/128 registers
PIOC
512 Bytes/128 registers
0xFFFF F5FF
0xFFFF F600
Reserved
UDP
16 Kbytes
0xFFFB 3FFF
0xFFFB 4000
0xFFFF F7FF
0xFFFF F800
Reserved
0xFFFB 7FFF
0xFFFB 8000
0xFFFB BFFF
0xFFFB C000
0xFFFB FFFF
0xFFFC 0000
6 x 256 MBytes
1,536 MBytes
0xFFFC 3FFF
0xFFFC 4000
0xFFFC 7FFF
0xFFFC 8000
0xFFFC BFFF
0xFFFC C000
0xFFFC FFFF
0xFFFD 0000
0xFFFD 3FFF
0xFFFD 4000
0xFFFD 7FFF
0xFFFD 8000
0xFFFD BFFF
0xFFFD C000
0xFFFD FFFF
0xFFFE 0000
0xFFFE 3FFF
0xFFFE 4000
0xEFFF FFFF
0xF000 0000
22
PIOA
0xFFFF F3FF
0xFFFF F400
0xFFFA 3FFF
0xFFFA 4000
0x9000 0000
0xFFFF FFFF
512 Bytes/128 registers
Reserved
0x8FFF FFFF
Internal Peripherals
DBGU
0xFFFF F1FF
0xFFFF F200
0xF000 0000
Undefined
(Abort)
512 Bytes/128 registers
Peripheral Mapping
0x8000 0000
EBI
Chip Select 7
AIC
256 MBytes
0xFFFF EFFF
0xFFFF F000
16 Kbytes
0xFFFF F9FF
0xFFFF FA00
USART0
16 Kbytes
0xFFFF FBFF
0xFFFF FC00
USART1
16 Kbytes
TWI
Reserved
Reserved
0xFFFF FCFF
0xFFFF FD00
Reserved
0xFFFF FD0F
PWMC
16 Kbytes
Reserved
SSC
16 Kbytes
ADC
16 Kbytes
256 Bytes/64 registers
RSTC
16 Bytes/4 registers
Reserved
0xFFFF FD20
0xFFFF FC2F
0xFFFF FD30
0xFFFF FC3F
0xFFFF FD40
0xFFFF FD4F
RTT
16 Bytes/4 registers
PIT
16 Bytes/4 registers
WDT
16 Bytes/4 registers
Reserved
Reserved
0xFFFF FD60
SPI
PMC
16 Kbytes
Reserved
0xFFFF FC6F
0xFFFF FD70
0xFFFF FEFF
0xFFFF FF00
4 Bytes/1 register
Reserved
MC
SYSC
0xFFFF FFFF
VREG
256 Bytes/64 registers
0xFFFF FFFF
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
A first level of address decoding is performed by the Memory Controller, i.e., by the implementation of the Advanced System Bus (ASB) with additional features.
Decoding splits the 4G bytes of address space into 16 areas of 256M bytes. The areas 1 to 8 are
directed to the EBI that associates these areas to the external chip selects NC0 to NCS7. The
area 0 is reserved for the addressing of the internal memories, and a second level of decoding
provides 1M byte of internal memory area. The area 15 is reserved for the peripherals and provides access to the Advanced Peripheral Bus (APB).
Other areas are unused and performing an access within them provides an abort to the master
requesting such an access.
8.1
8.1.1
Embedded Memories
Internal Memories
8.1.1.1
Internal SRAM
The AT91SAM7SE512/256 embeds a high-speed 32-Kbyte SRAM bank. The AT91SAM7SE32
embeds a high-speed 8-Kbyte SRAM bank. After reset and until the Remap Command is performed, the SRAM is only accessible at address 0x0020 0000. After Remap, the SRAM also
becomes available at address 0x0.
8.1.1.2
Internal ROM
The AT91SAM7SE512/256/32 embeds an Internal ROM. At any time, the ROM is mapped at
address 0x30 0000. The ROM contains the FFPI and the SAM-BA boot program.
8.1.1.3
Internal Flash
• The AT91SAM7SE512 features two banks of 256 Kbytes of Flash.
• The AT91SAM7SE256 features one bank of 256 Kbytes of Flash.
• The AT91SAM7SE32 features one bank of 32 Kbytes of Flash.
At any time, the Flash is mapped to address 0x0010 0000.
A general purpose NVM (GPNVM) bit is used to boot either on the ROM (default) or from the
Flash.
This GPNVM bit can be cleared or set respectively through the commands “Clear General-purpose NVM Bit” and “Set General-purpose NVM Bit” of the EFC User Interface.
Setting the GPNVM bit 2 selects the boot from the Flash, clearing it selects the boot from the
ROM. Asserting ERASE clears the GPNVM bit 2 and thus selects the boot from the ROM by
default.
23
6222ES–ATARM–15-Dec-09
Figure 8-2.
Internal Memory Mapping with GPNVM Bit 2 = 0 (default)
0x0000 0000
0x000F FFFF
ROM Before Remap
SRAM After Remap
1 M Bytes
0x0010 0000
Internal FLASH
1 M Bytes
Internal SRAM
1 M Bytes
Internal ROM
1 M Bytes
0x001F FFFF
0x0020 0000
256M Bytes
0x002F FFFF
0x0030 0000
0x003F FFFF
0x0040 0000
Undefined Areas
(Abort)
252 M Bytes
0x0FFF FFFF
Figure 8-3.
Internal Memory Mapping with GPNVM Bit 2 = 1
0x0000 0000
0x000F FFFF
Flash Before Remap
SRAM After Remap
1 M Bytes
0x0010 0000
Internal FLASH
1 M Bytes
Internal SRAM
1 M Bytes
Internal ROM
1 M Bytes
0x001F FFFF
0x0020 0000
256M Bytes
0x002F FFFF
0x0030 0000
0x003F FFFF
0x0040 0000
Undefined Areas
(Abort)
252 M Bytes
0x0FFF FFFF
8.1.2
8.1.2.1
Embedded Flash
Flash Overview
The Flash of the AT91SAM7SE512 is organized in two banks (dual plane) of 1024 pages of 256
bytes. It reads as 131,072 32-bit words.
The Flash of the AT91SAM7SE256 is organized in 1024 pages (single plane) of 256 bytes. It
reads as 65,536 32-bit words.
The Flash of the AT91SAM7SE32 is organized in 256 pages (single plane) of 128 bytes. It reads
as 8192 32-bit words.
The Flash of the AT91SAM7SE32 contains a 128-byte write buffer, accessible through a 32-bit
interface.
The Flash of the AT91SAM7SE512/256 contains a 256-byte write buffer, accessible through a
32-bit interface.
24
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
The Flash benefits from the integration of a power reset cell and from the brownout detector.
This prevents code corruption during power supply changes, even in the worst conditions.
8.1.2.2
Embedded Flash Controller
The Embedded Flash Controller (EFC) manages accesses performed by the masters of the system. It enables reading the Flash and writing the write buffer. It also contains a User Interface,
mapped within the Memory Controller on the APB. The User Interface allows:
• programming of the access parameters of the Flash (number of wait states, timings, etc.)
• starting commands such as full erase, page erase, page program, NVM bit set, NVM bit
clear, etc.
• getting the end status of the last command
• getting error status
• programming interrupts on the end of the last commands or on errors
The Embedded Flash Controller also provides a dual 32-bit Prefetch Buffer that optimizes 16-bit
access to the Flash. This is particularly efficient when the processor is running in Thumb mode.
• Two EFCs (EFC0 and EFC1) are embedded in the SAM7SE512 to control each plane of 256
KBytes. Dual plane organization allows concurrent Read and Program.
• One EFC (EFC0) is embedded in the SAM7SE256 to control the single plane 256 KBytes.
• One EFC (EFC0) is embedded in the SAM7SE32 to control the single plane 32 KBytes.
8.1.2.3
Lock Regions
The AT91SAM7SE512 Embedded Flash Controller manages 32 lock bits to protect 32 regions
of the flash against inadvertent flash erasing or programming commands. The
AT91SAM7SE512 contains 32 lock regions and each lock region contains 64 pages of 256
bytes. Each lock region has a size of 16 Kbytes.
The AT91SAM7SE256 Embedded Flash Controller manages 16 lock bits to protect 16 regions
of the flash against inadvertent flash erasing or programming commands. The
AT91SAM7SE256 contains 16 lock regions and each lock region contains 64 pages of 256
bytes. Each lock region has a size of 16 Kbytes.
The AT91SAM7SE32 Embedded Flash Controller manages 8 lock bits to protect 8 regions of
the flash against inadvertent flash erasing or programming commands. The AT91SAM7SE32
contains 8 lock regions and each lock region contains 32 pages of 128 bytes. Each lock region
has a size of 4 Kbytes.
If a locked-region’s erase or program command occurs, the command is aborted and the EFC
triggers an interrupt.
The 32 (AT91SAM7SE512), 16 (AT91SAM7SE256) or 8 (AT91SAM7SE32) NVM bits are software programmable through the EFC User Interface. The command “Set Lock Bit” enables the
protection. The command “Clear Lock Bit” unlocks the lock region.
Asserting the ERASE pin clears the lock bits, thus unlocking the entire Flash.
8.1.2.4
Security Bit Feature
The AT91SAM7SE512/256/32 features a security bit, based on a specific NVM-bit. When the
security is enabled, any access to the Flash, either through the ICE interface or through the Fast
Flash Programming Interface, is forbidden.
25
6222ES–ATARM–15-Dec-09
The security bit can only be enabled through the Command “Set Security Bit” of the EFC User
Interface. Disabling the security bit can only be achieved by asserting the ERASE pin at 1 and
after a full flash erase is performed. When the security bit is deactivated, all accesses to the
flash are permitted.
It is important to note that the assertion of the ERASE pin should always be longer than 200 ms.
As the ERASE pin integrates a permanent pull-down, it can be left unconnected during normal
operation. However, it is safer to connect it directly to GND for the final application.
8.1.2.5
Non-volatile Brownout Detector Control
Two general purpose NVM (GPNVM) bits are used for controlling the brownout detector (BOD),
so that even after a power loss, the brownout detector operations remain in their state.
These two GPNVM bits can be cleared or set respectively through the commands “Clear General-purpose NVM Bit” and “Set General-purpose NVM Bit” of the EFC User Interface.
• GPNVM bit 0 is used as a brownout detector enable bit. Setting the GPNVM bit 0 enables the
BOD, clearing it disables the BOD. Asserting ERASE clears the GPNVM bit 0 and thus
disables the brownout detector by default.
• GPNVM bit 1 is used as a brownout reset enable signal for the reset controller. Setting the
GPNVM bit 1 enables the brownout reset when a brownout is detected, Clearing the GPNVM
bit 1 disables the brownout reset. Asserting ERASE disables the brownout reset by default.
8.1.2.6
8.1.3
Calibration Bits
Sixteen NVM bits are used to calibrate the brownout detector and the voltage regulator. These
bits are factory configured and cannot be changed by the user. The ERASE pin has no effect on
the calibration bits.
Fast Flash Programming Interface
The Fast Flash Programming Interface allows programming the device through either a serial
JTAG interface or through a multiplexed fully-handshaked parallel port. It allows gang-programming with market-standard industrial programmers.
The FFPI supports read, page program, page erase, full erase, lock, unlock and protect
commands.
The Fast Flash Programming Interface is enabled and the Fast Programming Mode is entered
when the TST pin and the PA0 and PA1 pins are all tied high and PA2 tied to low.
• The Flash of the AT91SAM7SE512 is organized in 2048 pages of 256 bytes (dual plane). It
reads as 131,072 32-bit words.
• The Flash of the AT91SAM7SE256 is organized in 1024 pages of 256 bytes (single plane). It
reads as 65,536 32-bit words.
• The Flash of the AT91SAM7SE32 is organized in 256 pages of 128 bytes (single plane). It
reads as 32,768 32-bit words.
• The Flash of the AT91SAM7SE512/256 contains a 256-byte write buffer, accessible through
a 32-bit interface.
• The Flash of the AT91SAM7SE32 contains a 128-byte write buffer, accessible through a 32bit interface.
26
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
8.1.4
SAM-BA® Boot
The SAM-BA Boot is a default Boot Program which provides an easy way to program in-situ the
on-chip Flash memory.
The SAM-BA Boot Assistant supports serial communication via the DBGU or the USB Device
Port.
• Communication via the DBGU supports a wide range of crystals from 3 to 20 MHz via
software auto-detection.
• Communication via the USB Device Port is limited to an 18.432 MHz crystal.
The SAM-BA Boot provides an interface with SAM-BA Graphic User Interface (GUI).
The SAM-BA Boot is in ROM and is mapped in Flash at address 0x0 when GPNVM bit 2 is set to
0.
8.2
External Memories
The external memories are accessed through the External Bus Interface.
Refer to the memory map in Figure 8-1 on page 22.
27
6222ES–ATARM–15-Dec-09
9. System Controller
The System Controller manages all vital blocks of the microcontroller: interrupts, clocks, power,
time, debug and reset.
The System Controller peripherals are all mapped to the highest 4 Kbytes of address space,
between addresses 0xFFFF F000 and 0xFFFF FFFF.
Figure 9-1 on page 29 shows the System Controller Block Diagram.
Figure 8-1 on page 22 shows the mapping of the User Interface of the System Controller peripherals. Note that the Memory Controller configuration user interface is also mapped within this
address space.
28
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
Figure 9-1.
System Controller Block Diagram
jtag_nreset
System Controller
Boundary Scan
TAP Controller
nirq
irq0-irq1
nfiq
Advanced
Interrupt
Controller
fiq
periph_irq[2..18]
proc_nreset
ARM7TDMI
PCK
int
debug
pit_irq
rtt_irq
wdt_irq
dbgu_irq
pmc_irq
rstc_irq
power_on_reset
force_ntrst
MCK
periph_nreset
dbgu_irq
Debug
Unit
force_ntrst
dbgu_txd
dbgu_rxd
security_bit
MCK
debug
periph_nreset
SLCK
power_on_reset
pit_irq
Real-Time
Timer
rtt_irq
Watchdog
Timer
wdt_irq
cal
gpnvm[0]
flash_wrdis
MCK
bod_rst_en
proc_nreset
jtag_nreset
flash_poe
Reset
Controller
periph_nreset
proc_nreset
rstc_irq
NRST
RCOSC
SLCK
MAINCK
XOUT
Voltage
Regulator
Mode
Controller
standby
Voltage
Regulator
cal
SLCK
OSC
Memory
Controller
power_on_reset
POR
XIN
Embedded
Flash
gpnvm[0..2]
wdt_fault
WDRPROC
gpnvm[1]
en
flash_poe
flash_wrdis
cal
SLCK
debug
idle
proc_nreset
BOD
Periodic
Interval
Timer
periph_clk[2..18]
Power
Management
Controller
UDPCK
pck[0-3]
periph_clk[11]
PCK
periph_nreset
UDPCK
periph_irq[11]
USB Device
Port
MCK
usb_suspend
PLLRC
PLL
PLLCK
pmc_irq
int
idle
periph_nreset
periph_clk[4..18]
usb_suspend
periph_nreset
periph_nreset
periph_irq{2-3]
irq0-irq1
periph_clk[2-3]
dbgu_rxd
Embedded
Peripherals
PIO
Controller
fiq
periph_irq[4..18]
dbgu_txd
in
PA0-PA31
PB0-PB31
out
enable
PC0-PC29
29
6222ES–ATARM–15-Dec-09
9.1
Reset Controller
• Based on one power-on reset cell and a double brownout detector
• Status of the last reset, either Power-up Reset, Software Reset, User Reset, Watchdog
Reset, Brownout Reset
• Controls the internal resets and the NRST pin output
• Allows to shape a signal on the NRST line, guaranteeing that the length of the pulse meets
any requirement.
9.1.1
Brownout Detector and Power On Reset
The AT91SAM7SE512/256/32 embeds one brownout detection circuit and a power-on reset
cell. The power-on reset is supplied with and monitors VDDCORE.
Both signals are provided to the Flash to prevent any code corruption during power-up or powerdown sequences or if brownouts occur on the VDDCORE power supply.
The power-on reset cell has a limited-accuracy threshold at around 1.5V. Its output remains low
during power-up until VDDCORE goes over this voltage level. This signal goes to the reset controller and allows a full re-initialization of the device.
The brownout detector monitors the VDDCORE and VDDFLASH levels during operation by
comparing it to a fixed trigger level. It secures system operations in the most difficult environments and prevents code corruption in case of brownout on the VDDCORE or VDDFLASH.
When the brownout detector is enabled and VDDCORE decreases to a value below the trigger
level (Vbot18-, defined as Vbot18 - hyst/2), the brownout output is immediately activated.
When VDDCORE increases above the trigger level (Vbot18+, defined as Vbot18 + hyst/2), the
reset is released. The brownout detector only detects a drop if the voltage on VDDCORE stays
below the threshold voltage for longer than about 1µs.
The VDDCORE threshold voltage has a hysteresis of about 50 mV, to ensure spike free brownout detection. The typical value of the brownout detector threshold is 1.68V with an accuracy of
± 2% and is factory calibrated.
When the brownout detector is enabled and VDDFLASH decreases to a value below the trigger
level (Vbot33-, defined as Vbot33 - hyst/2), the brownout output is immediately activated.
When VDDFLASH increases above the trigger level (Vbot33+, defined as Vbot33 + hyst/2), the
reset is released. The brownout detector only detects a drop if the voltage on VDDCORE stays
below the threshold voltage for longer than about 1µs.
The VDDFLASH threshold voltage has a hysteresis of about 50 mV, to ensure spike free brownout detection. The typical value of the brownout detector threshold is 2.80V with an accuracy of
± 3.5% and is factory calibrated.
The brownout detector is low-power, as it consumes less than 20 µA static current. However, it
can be deactivated to save its static current. In this case, it consumes less than 1µA. The deactivation is configured through the GPNVM bit 0 of the Flash.
9.2
Clock Generator
The Clock Generator embeds one low-power RC Oscillator, one Main Oscillator and one PLL
with the following characteristics:
• RC Oscillator ranges between 22 KHz and 42 KHz
30
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
• Main Oscillator frequency ranges between 3 and 20 MHz
• Main Oscillator can be bypassed
• PLL output ranges between 80 and 220 MHz
It provides SLCK, MAINCK and PLLCK.
Figure 9-2.
Clock Generator Block Diagram
Clock Generator
XIN
Embedded
RC
Oscillator
Slow Clock
SLCK
Main
Oscillator
Main Clock
MAINCK
PLL and
Divider
PLL Clock
PLLCK
XOUT
PLLRC
Status
Control
Power
Management
Controller
9.3
Power Management Controller
The Power Management Controller uses the Clock Generator outputs to provide:
• the Processor Clock PCK
• the Master Clock MCK
• the USB Clock UDPCK
• all the peripheral clocks, independently controllable
• three programmable clock outputs
The Master Clock (MCK) is programmable from a few hundred Hz to the maximum operating frequency of the device.
The Processor Clock (PCK) switches off when entering processor idle mode, thus allowing
reduced power consumption while waiting for an interrupt.
31
6222ES–ATARM–15-Dec-09
Figure 9-3.
Power Management Controller Block Diagram
Processor
Clock
Controller
Master Clock Controller
SLCK
MAINCK
PLLCK
PCK
int
Idle Mode
Prescaler
/1,/2,/4,...,/64
MCK
Peripherals
Clock Controller
periph_clk[2..14]
ON/OFF
Programmable Clock Controller
SLCK
MAINCK
PLLCK
Prescaler
/1,/2,/4,...,/64
USB Clock Controller
ON/OFF
PLLCK
9.4
Divider
/1,/2,/4
pck[0..2]
usb_suspend
UDPCK
Advanced Interrupt Controller
• Controls the interrupt lines (nIRQ and nFIQ) of an ARM Processor
• Individually maskable and vectored interrupt sources
– Source 0 is reserved for the Fast Interrupt Input (FIQ)
– Source 1 is reserved for system peripherals (RTT, PIT, EFC, PMC, DBGU, etc.)
– Other sources control the peripheral interrupts or external interrupts
– Programmable edge-triggered or level-sensitive internal sources
– Programmable positive/negative edge-triggered or high/low level-sensitive external
sources
• 8-level Priority Controller
– Drives the normal interrupt nIRQ of the processor
– Handles priority of the interrupt sources
– Higher priority interrupts can be served during service of lower priority interrupt
• Vectoring
– Optimizes interrupt service routine branch and execution
– One 32-bit vector register per interrupt source
– Interrupt vector register reads the corresponding current interrupt vector
• Protect Mode
– Easy debugging by preventing automatic operations
• Fast Forcing
– Permits redirecting any interrupt source on the fast interrupt
• General Interrupt Mask
– Provides processor synchronization on events without triggering an interrupt
32
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
9.5
Debug Unit
• Comprises:
– One two-pin UART
– One Interface for the Debug Communication Channel (DCC) support
– One set of Chip ID Registers
– One Interface providing ICE Access Prevention
• Two-pin UART
– USART-compatible User Interface
– Programmable Baud Rate Generator
– Parity, Framing and Overrun Error
– Automatic Echo, Local Loopback and Remote Loopback Channel Modes
• Debug Communication Channel Support
– Offers visibility of COMMRX and COMMTX signals from the ARM Processor
• Chip ID Registers
– Identification of the device revision, sizes of the embedded memories, set of
peripherals
– Chip ID is 0x272A 0A40 (VERSION 0) for AT91SAM7SE512
– Chip ID is 0x272A 0940 (VERSION 0) for AT91SAM7SE256
– Chip ID is 0x2728 0340 (VERSION 0) for AT91SAM7SE32
9.6
Periodic Interval Timer
• 20-bit programmable counter plus 12-bit interval counter
9.7
Watchdog Timer
• 12-bit key-protected Programmable Counter running on prescaled SLCK
• Provides reset or interrupt signals to the system
• Counter may be stopped while the processor is in debug state or in idle mode
9.8
Real-time Timer
• 32-bit free-running counter with alarm running on prescaled SLCK
• Programmable 16-bit prescaler for SLCK accuracy compensation
9.9
PIO Controllers
• Three PIO Controllers. PIO A and B each control 32 I/O lines and PIO C controls 24 I/O lines.
• Fully programmable through set/clear registers
• Multiplexing of two peripheral functions per I/O line
• For each I/O line (whether assigned to a peripheral or used as general-purpose I/O)
– Input change interrupt
– Half a clock period glitch filter
– Multi-drive option enables driving in open drain
– Programmable pull-up on each I/O line
– Pin data status register, supplies visibility of the level on the pin at any time
33
6222ES–ATARM–15-Dec-09
• Synchronous output, provides Set and Clear of several I/O lines in a single write
9.10
Voltage Regulator Controller
The purpose of this controller is to select the Power Mode of the Voltage Regulator between
Normal Mode (bit 0 is cleared) or Standby Mode (bit 0 is set).
34
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
10. Peripherals
10.1
User Interface
The User Peripherals are mapped in the 256 MBytes of the address space between
0xF000 0000 and 0xFFFF EFFF. Each peripheral is allocated 16 Kbytes of address space.
A complete memory map is presented in Figure 8-1 on page 22.
10.2
Peripheral Identifiers
The AT91SAM7SE512/256/32 embeds a wide range of peripherals. Table 10-1 defines the
Peripheral Identifiers of the AT91SAM7SE512/256/32. Unique peripheral identifiers are defined
for both the Advanced Interrupt Controller and the Power Management Controller.
Table 10-1.
Peripheral Identifiers
Peripheral
Peripheral
Peripheral
External
ID
Mnemonic
Name
Interrupt
0
AIC
Advanced Interrupt Controller
FIQ
(1)
1
SYSC
2
PIOA
Parallel I/O Controller A
3
PIOB
Parallel I/O Controller B
4
PIOC
Parallel I/O Controller C
5
SPI
Serial Peripheral Interface 0
6
US0
USART 0
7
US1
USART 1
8
SSC
Synchronous Serial Controller
9
TWI
Two-wire Interface
10
PWMC
PWM Controller
11
UDP
USB Device Port
12
TC0
Timer/Counter 0
13
TC1
Timer/Counter 1
14
TC2
Timer/Counter 2
(1)
15
ADC
16-28
reserved
29
AIC
Advanced Interrupt Controller
IRQ0
30
AIC
Advanced Interrupt Controller
IRQ1
Note:
Analog-to Digital Converter
1. Setting SYSC and ADC bits in the clock set/clear registers of the PMC has no effect. The System Controller is continuously clocked. The ADC clock is automatically started for the first
conversion. In Sleep Mode the ADC clock is automatically stopped after each conversion.
35
6222ES–ATARM–15-Dec-09
10.3
Peripheral Multiplexing on PIO Lines
The AT91SAM7SE512/256/32 features three PIO controllers, PIOA, PIOB and PIOC, that multiplex the I/O lines of the peripheral set.
PIO Controller A and B control 32 lines; PIO Controller C controls 24 lines. Each line can be
assigned to one of two peripheral functions, A or B. Some of them can also be multiplexed with
the analog inputs of the ADC Controller.
Table 10-2 on page 37 defines how the I/O lines of the peripherals A and B or the analog inputs
are multiplexed on the PIO Controller A, B and C. The two columns “Function” and “Comments”
have been inserted for the user’s own comments; they may be used to track how pins are
defined in an application.
Note that some peripheral functions that are output only may be duplicated in the table.
At reset, all I/O lines are automatically configured as input with the programmable pull-up
enabled, so that the device is maintained in a static state as soon as a reset is detected.
36
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
10.4
PIO Controller A Multiplexing
Table 10-2.
Multiplexing on PIO Controller A
PIO Controller A
Application Usage
I/O Line
Peripheral A
Peripheral B
Comments
PA0
PWM0
A0/NBS0
High-Drive
PA1
PWM1
A1/NBS2
High-Drive
PA2
PWM2
A2
High-Drive
PA3
TWD
A3
High-Drive
PA4
TWCK
A4
PA5
RXD0
A5
PA6
TXD0
A6
PA7
RTS0
A7
PA8
CTS0
A8
PA9
DRXD
A9
PA10
DTXD
A10
PA11
NPCS0
A11
PA12
MISO
A12
PA13
MOSI
A13
PA14
SPCK
A14
PA15
TF
A15
PA16
TK
A16/BA0
PA17
TD
A17/BA1
AD0
PA18
RD
NBS3/CFIOW
AD1
PA19
RK
NCS4/CFCS0
AD2
PA20
RF
NCS2/CFCS1
AD3
PA21
RXD1
NCS6/CFCE2
PA22
TXD1
NCS5/CFCE1
PA23
SCK1
NWR1/NBS1/CFIOR
PA24
RTS1
SDA10
PA25
CTS1
SDCKE
PA26
DCD1
NCS1/SDCS
PA27
DTR1
SDWE
PA28
DSR1
CAS
PA29
RI1
RAS
PA30
IRQ1
D30
PA31
NPCS1
D31
Function
Comments
37
6222ES–ATARM–15-Dec-09
10.5
PIO Controller B Multiplexing
Table 10-3.
Multiplexing on PIO Controller B
PIO Controller B
I/O Line
Peripheral A
Peripheral B
PB0
TIOA0
A0/NBS0
PB1
TIOB0
A1/NBS2
PB2
SCK0
A2
PB3
NPCS3
A3
PB4
TCLK0
A4
PB5
NPCS3
A5
PB6
PCK0
A6
PB7
PWM3
A7
PB8
ADTRG
A8
PB9
NPCS1
A9
PB10
NPCS2
A10
PB11
PWM0
A11
PB12
PWM1
A12
PB13
PWM2
A13
PB14
PWM3
A14
PB15
TIOA1
A15
PB16
TIOB1
A16/BA0
PB17
PCK1
A17/BA1
PB18
PCK2
D16
PB19
FIQ
D17
PB20
IRQ0
D18
PB21
PCK1
D19
PB22
NPCS3
D20
PB23
PWM0
D21
PB24
PWM1
D22
PB25
PWM2
D23
PB26
TIOA2
D24
PB27
TIOB2
D25
PB28
TCLK1
D26
PB29
TCLK2
D27
PB30
NPCS2
D28
PB31
PCK2
D29
38
Application Usage
Comments
Function
Comments
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
10.6
PIO Controller C Multiplexing
Multiplexing on PIO Controller C
PIO Controller C
I/O Line
Peripheral A
Peripheral B
PC0
D0
PC1
D1
PC2
D2
PC3
D3
PC4
D4
PC5
D5
PC6
D6
PC7
D7
PC8
D8
RTS1
PC9
D9
DTR1
PC10
D10
PCK0
PC11
D11
PCK1
PC12
D12
PCK2
PC13
D13
PC14
D14
NPCS1
PC15
D15
NCS3/NANDCS
PC16
A18
NWAIT
PC17
A19
NANDOE
PC18
A20
NANDWE
PC19
A21/NANDALE
PC20
A22/REG/NANDCLE
NWR0/NWE/CFWE
PC22
NRD/CFOE
10.7
CFRNW
Comments
Function
Comments
NCS7
PC21
PC23
Application Usage
NCS0
Serial Peripheral Interface
• Supports communication with external serial devices
– Four chip selects with external decoder allow communication with up to 15
peripherals
– Serial memories, such as DataFlash® and 3-wire EEPROMs
– Serial peripherals, such as ADCs, DACs, LCD Controllers, CAN Controllers and
Sensors
– External co-processors
• Master or slave serial peripheral bus interface
39
6222ES–ATARM–15-Dec-09
– 8- to 16-bit programmable data length per chip select
– Programmable phase and polarity per chip select
– Programmable transfer delays per chip select, between consecutive transfers and
between clock and data
– Programmable delay between consecutive transfers
– Selectable mode fault detection
– Maximum frequency at up to Master Clock
10.8
Two Wire Interface
• Master, Multi-Master and Slave Mode Operation
• Compatibility with standard two-wire serial memories
• One, two or three bytes for slave address
• Sequential read/write operations
• Bit Rate: Up to 400 Kbit/s
• General Call Supported in Slave Mode
10.9
USART
• Programmable Baud Rate Generator
• 5- to 9-bit full-duplex synchronous or asynchronous serial communications
– 1, 1.5 or 2 stop bits in Asynchronous Mode
– 1 or 2 stop bits in Synchronous Mode
– Parity generation and error detection
– Framing error detection, overrun error detection
– MSB or LSB first
– Optional break generation and detection
– By 8 or by 16 over-sampling receiver frequency
– Hardware handshaking RTS - CTS
– Modem Signals Management DTR-DSR-DCD-RI on USART1
– Receiver time-out and transmitter timeguard
– Multi-drop Mode with address generation and detection
• RS485 with driver control signal
• ISO7816, T = 0 or T = 1 Protocols for interfacing with smart cards
– NACK handling, error counter with repetition and iteration limit
• IrDA® modulation and demodulation
– Communication at up to 115.2 Kbps
• Test Modes
– Remote Loopback, Local Loopback, Automatic Echo
10.10 Serial Synchronous Controller
• Provides serial synchronous communication links used in audio and telecom applications
• Contains an independent receiver and transmitter and a common clock divider
40
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
• Offers a configurable frame sync and data length
• Receiver and transmitter can be programmed to start automatically or on detection of
different event on the frame sync signal
• Receiver and transmitter include a data signal, a clock signal and a frame synchronization
signal
10.11 Timer Counter
• Three 16-bit Timer Counter Channels
– Two output compare or one input capture per channel
• Wide range of functions including:
– Frequency measurement
– Event counting
– Interval measurement
– Pulse generation
– Delay timing
– Pulse Width Modulation
– Up/down capabilities
• Each channel is user-configurable and contains:
– Three external clock inputs
– Five internal clock inputs, as defined in Table 10-4
Table 10-4.
Timer Counter Clocks Assignment
TC Clock input
Clock
TIMER_CLOCK1
MCK/2
TIMER_CLOCK2
MCK/8
TIMER_CLOCK3
MCK/32
TIMER_CLOCK4
MCK/128
TIMER_CLOCK5
MCK/1024
– Two multi-purpose input/output signals
– Two global registers that act on all three TC channels
10.12 PWM Controller
• Four channels, one 16-bit counter per channel
• Common clock generator, providing thirteen different clocks
– One Modulo n counter providing eleven clocks
– Two independent linear dividers working on modulo n counter outputs
• Independent channel programming
– Independent enable/disable commands
– Independent clock selection
– Independent period and duty cycle, with double buffering
– Programmable selection of the output waveform polarity
– Programmable center or left aligned output waveform
41
6222ES–ATARM–15-Dec-09
10.13 USB Device Port
• USB V2.0 full-speed compliant,12 Mbits per second.
• Embedded USB V2.0 full-speed transceiver
• Embedded 2688-byte dual-port RAM for endpoints
• Eight endpoints
– Endpoint 0: 64bytes
– Endpoint 1 and 2: 64 bytes ping-pong
– Endpoint 3: 64 bytes
– Endpoint 4 and 5: 512 bytes ping-pong
– Endpoint 6 and 7: 64 bytes ping-pong
– Ping-pong Mode (two memory banks) for Isochronous and bulk endpoints
• Suspend/resume logic
• Integrated Pull-up on DDP
10.14 Analog-to-Digital Converter
• 8-channel ADC
• 10-bit 384 Ksamples/sec. or 8-bit 583 Ksamples/sec. Successive Approximation Register
ADC
• ±2 LSB Integral Non Linearity, ±1 LSB Differential Non Linearity
• Integrated 8-to-1 multiplexer, offering eight independent 3.3V analog inputs
• External voltage reference for better accuracy on low voltage inputs
• Individual enable and disable of each channel
• Multiple trigger sources
– Hardware or software trigger
– External trigger pin
– Timer Counter 0 to 2 outputs TIOA0 to TIOA2 trigger
• Sleep Mode and conversion sequencer
– Automatic wakeup on trigger and back to sleep mode after conversions of all
enabled channels
• Each analog input shared with digital signals
42
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
11. Package Drawings
Figure 11-1. 128-lead LQFP Package Drawing
43
6222ES–ATARM–15-Dec-09
Figure 11-2. 144-ball LFBGA Package Drawing
All dimensions are in mm
44
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
AT91SAM7SE512/256/32 Preliminary Summary
12. Ordering Information
Table 12-1.
Ordering Information
Temperature
Operating Range
Ordering Code
Package
Package Type
AT91SAM7SE512-AU
LQFP128
Green
Industrial
(-40° C to 85° C)
AT91SAM7SE256-AU
LQFP128
Green
Industrial
(-40° C to 85° C)
AT91SAM7SE32-AU
LQFP128
Green
Industrial
(-40° C to 85° C)
AT91SAM7SE512-CU
LFBGA144
Green
Industrial
(-40° C to 85° C)
AT91SAM7SE256-CU
LFBGA144
Green
Industrial
(-40° C to 85° C)
AT91SAM7SE32-CU
LFBGA144
Green
Industrial
(-40° C to 85° C)
45
6222ES–ATARM–15-Dec-09
Revision History
Doc. Rev
Change
Request
Ref.
Comments
First issue
6222AS
Revised Memories with condensed mapping.
Added Package Outlines and 144-ball LFBGA pin and ordering information.
#2709
6222BS
Section 12. “Ordering Information” on page 45 ordering information code reference changed
#3699
#3826
6222CS
Section 6.1 ”JTAG Port Pins”, Section 6.3 ”Reset Pin”, Section 6.5 ”SDCK Pin”, removed statement: “not 5V
tolerant”
Section 7.6 ”SDRAM Controller”, Mobile SDRAM controller added to SDRAMC features
INL and DNL updated in Section 10.14 ”Analog-to-Digital Converter”
“Features” on page 2, Fully Static Operation; added, up to 55 MHz at 1.8V and 85°C worst case conditions
Section 7.1 ”ARM7TDMI Processor”, Runs at up to 55 MHz, providing 0.9 MIPS/MHz (core supplied with 1.8V)
Section 7.8 ”Peripheral DMA Controller” PDC priority list added
Section 7.5 ”Static Memory Controller”, Multiple device adaptability includes: compliant w/PSRAM in
synchronous operations.
#4005
#3924
#3833
review
6222DS
Figure 8-1 ”AT91SAM7SE Memory Mapping” Compact Flash not shown w/EBI Chip Select 5. Compact Flash is 4804
shown with EBI Chip Select 2.
Section 8.1.2.1 ”Flash Overview”, updated AT91SAM7SE32 ...”reads as 8192 32-bit words.”
4512
Section 6. ”/O Lines Considerations”, “JTAG Port Pins”, “Test Pin”, “Reset Pin”, “ERASE Pin” descriptions
5062
updated
6222ES
Section 10.11 ”Timer Counter”, .....the TC has two output compare and one input capture per channel.
6222FS
Features:
“Mode for General Purpose Two-wire UART Serial Communication” added to “Debug Unit (DBGU)”.
Signal Description:
Table 3-1, “Signal Description List”, AD0-AD3 and AD4-AD7 comments reversed.
System Controller:
Figure 9-1 ”System Controller Block Diagram”, ‘periph_nreset’ changed into ‘power_on_reset’ for RTT.
46
4209
5846
5271
5222
AT91SAM7SE512/256/32 Preliminary
6222ES–ATARM–15-Dec-09
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