Atmel AT91SAM7X-EK User manual

AT91SAM7X-EK
Evaluation Board
for AT91SAM7X and AT91SAM7XC
..............................................................................................
User Guide

2AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07

AT91SAM7X-EK Evaluation Board User Guide i
6195E–ATARM–22-Mar-076195E–ATARM–22-Mar-07
Table of Contents
Section 1
Overview............................................................................................... 1-1
1.1 Scope........................................................................................................1-1
1.2 Deliverables ..............................................................................................1-1
1.3 The AT91SAM7X-EK Evaluation Board....................................................1-1
Section 2
Setting Up the AT91SAM7X-EK
Evaluation Board .................................................................................. 2-1
2.1 Electrostatic Warning ................................................................................2-1
2.2 Requirements............................................................................................2-1
2.3 Layout .......................................................................................................2-2
2.4 Powering Up the Board.............................................................................2-3
2.5 Getting Started..........................................................................................2-3
2.6 AT91SAM7X-EK Block Diagram...............................................................2-4
Section 3
Board Description ................................................................................. 3-1
3.1 AT91SAM7X Microcontroller.....................................................................3-1
3.2 AT91SAM7X Block Diagram.....................................................................3-4
3.3 AT91SAM7XC Microcontroller ..................................................................3-5
3.4 AT91SAM7XC Export Regulations Statement..........................................3-7
3.5 AT91SAM7XC Block Diagram ..................................................................3-8
3.6 Memory .....................................................................................................3-9
3.7 Clock Circuitry...........................................................................................3-9
3.8 Reset Circuitry ..........................................................................................3-9
3.9 Power Supply Circuitry..............................................................................3-9
3.10 Remote Communication ...........................................................................3-9
3.11 Analog Interface........................................................................................3-9
3.12 User Interface ...........................................................................................3-9
3.13 Debug Interface ......................................................................................3-10
3.14 Expansion Slot ........................................................................................3-10
Section 4
Configuration Straps ............................................................................. 4-1
4.1 Configuration Straps .................................................................................4-1
Section 5
Schematics ........................................................................................... 5-1
5.1 Schematics ...............................................................................................5-1

ii AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
Section 6
Errata.................................................................................................... 6-1
6.1 Errata ........................................................................................................6-1
Section 7
Revision History.................................................................................... 7-1
7.1 Revision History ........................................................................................7-1

AT91SAM7X-EK Evaluation Board User Guide 1-1
6195E–ATARM–22-Mar-07
Section 1
Overview
1.1 Scope The AT91SAM7X-EK and the AT91SAM7XC-EK evaluation kits enable evaluation capa-
bilities and code development of applications running on the AT91SAM7X or the
AT91SAM7XC microcontroller.
This guide focuses on the AT91SAM7X-EK board as a common evaluation platform for
the AT91SAM7X and AT91SAM7XC devices in a 100-lead LQFP package.
1.2 Deliverables The package contains the following items:
!a board marked AT91SAM7X-EK
!one A/B-type USB cable
!one crossed serial RS232 cable
!one RJ45 crossed Ethernet cable
!universal input AC/DC power supply with US and EU plug adapter
!one DVD-ROM containing summary and full datasheets, datasheets with electrical
and mechanical characteristics, application notes and getting started documents for
all development boards and AT91 microcontrollers. An AT91 software package with C
and assembly listings is also provided. This allows the user to begin evaluating the
AT91 ARM®Thumb®32-bit microcontroller quickly.
1.3 The AT91SAM7X-
EK Evaluation
Board
Depending on the model of the kit, the board is equipped with either an AT91SAM7X256
or an AT91SAM7XC256 (100-pin LQFP Green package) together with the following
interfaces:
!USB device port
!DBGU serial communication port
!RS232 serial communication port with RTS/CTS
!JTAG/ICE debug interface connector
!serial CAN communication ports
!MII Ethernet 100-base TX with auto MDIX capability
!buffered analog input and PWM output

Overview
1-2 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
!Power LED and general-purpose LEDs
!DataFlash®card slot
!expansion connector
!Atmel®serial DataFlash
!One footprint for Atmel Serial EEPROM (MN11)

AT91SAM7X-EK Evaluation Board User Guide 2-1
6195E–ATARM–22-Mar-07
Section 2
Setting Up the AT91SAM7X-EK
Evaluation Board
2.1 Electrostatic
Warning
The AT91SAM7X-EK evaluation board is shipped in a protective anti-static package.
The board must not be subjected to high electrostatic potentials. A grounding strap or
similar protective device should be worn when handling the board. Avoid touching the
component pins or any other metallic element.
2.2 Requirements In order to set up the AT91SAM7X-EK evaluation board, the following items are
required:
!the AT91SAM7X-EK evaluation board itself
!an A/B-type USB cable
or
!a DC USB power adapter (5V at 0.5 A) with USB A/B cable
Note: The kit is not delivered with a JTAG/ICE interface which is required to start eval-
uating the device.

Setting Up the AT91SAM7X-EK Evaluation Board
2-2 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
2.3 Layout
Figure 2-1. Layout - Top View

Setting Up the AT91SAM7X-EK Evaluation Board
AT91SAM7X-EK Evaluation Board User Guide 2-3
6195E–ATARM–22-Mar-07
Figure 2-2. Layout - Bottom View
2.4 Powering Up the
Board
The AT91SAM7X-EK board is self-powered by the USB port or by a USB power adapter.
2.5 Getting Started The AT91SAM7X-EK evaluation board is delivered with a DVD-ROM containing all nec-
essary information and step-by-step procedures for working with the most common
development tool chains. Please refer to this DVD-ROM, or to the AT91 web site,
http://www.atmel.com/products/AT91/, for the most up-to-date information on getting
started with the evaluation kit.

Setting Up the AT91SAM7X-EK Evaluation Board
2-4 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
2.6 AT91SAM7X-EK
Block Diagram
Figure 2-3. Block Diagram
3V3
VBUS
3V3
VBUS
3V3
NRST
VDDIN
VDDOUT
VDDCORE
VDDPLL
SYSTEM CONTROLLER
CAN
USART0
RXD
TXD
CTS RTS
RS232
RXD
TXD
RS232
DBGU
USB
USB DEVICE
DDP
DDM
PIO
ETHERNET PHY
ETHERNET 10/100
EMAC MII INTERFACE
TWI SCL - SDA
JTAG/ICE CONNECTOR
MANUAL RESET
NRST
VDDANA
GNDANA
AD4
3.3VANA
3.00V +- 0.2%
AD5
USER'S GREEN LED
PWM0 PWM2
GNDANA
EXTERNAL REF
PWM3
ADC
PWM1
ADVREFP
JTAG/ICE
0 TO VREF
EXTERNAL INPUT
0 TO VREF
PWM VOLTAGE GEN.
EXT CLK INPUT
18.432 MHz
XIN
XOUT
POWER LED
AT91SAM7X256
1
ANALOG INPUT
DBGU DRXD - DTXD
CANL
1
CANH
RJ45
VDDFLASH
ERASE
PWD
SPI0
RS
PWM3
PIO
RXD - TXD - RTS - CTS
PIO
3V3
IN OUT
LIGHTED WHEN POWER ON
PIO
5V
USER'S TACT SWITCH
PIO A
VDDIO
TST
Serial
EEprom
MDI/MDIX AUTO CROSSOVER
RF CONNECTORS
ZIGBEE AT86RF210 MODULE
RF CONNECTORS
AT86RF230 MODULE
RF CONNECTORS
ATR2406 MODULE
PIO B
DATAFLASH CARD READER
CS
SERIAL
DATAFLASH
SPI0_NPCS0 SPI0_NPCS1
NOT POPULATED
PIO A - PIO B EXPANSION CONNECTOR
NOT POPULATED
PIO APWM0..PWM3PIO B
PB19 PB20 PB21 PB22 PB30
AT91SAM7XC256
(LQFP100)
8 57 6 4 3 2 1 9
152 4
3 6
1K51K5
J7J7
1
2
3
YELLOWYELLOW

AT91SAM7X-EK Evaluation Board User Guide 3-1
6195E–ATARM–22-Mar-07
Section 3
Board Description
3.1 AT91SAM7X
Microcontroller
!Incorporates the ARM7TDMI®ARM®Thumb®Processor
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– EmbeddedICE™, Debug Communication Channel Support
!Internal High-speed Flash
– 256 Kbytes (AT91SAM7X256) Organized in 1024 Pages of 256 Bytes
– 128 Kbytes (AT91SAM7X128) Organized in 512 Pages of 256 Bytes
– 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 Write Cycles, 10-year Data Retention Capability,
Sector Lock Capabilities, Flash Security Bit
– Fast Flash Programming Interface for High Volume Production
!Internal High-speed SRAM, Single-cycle Access at Maximum Speed
– 64 Kbytes (AT91SAM7X256)
– 32 Kbytes (AT91SAM7X128)
!Memory Controller (MC)
– Embedded Flash Controller, 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)

Board Description
3-2 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
– Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz)
and Idle Mode
– Four 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)
– 2-wire UART and Support for Debug Communication Channel interrupt,
Programmable ICE Access Prevention
!Periodic Interval Timer (PIT)
– 20-bit Programmable Counter plus 12-bit Interval Counter
!Windowed Watchdog (WDT)
– 12-bit key-protected Programmable Counter
– 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
!Two Parallel Input/Output Controllers (PIO)
– Sixty-two 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
!Thirteen Peripheral DMA Controller (PDC) Channels
!One USB 2.0 Full Speed (12 Mbits per second) Device Port
– On-chip Transceiver, 1352-byte Configurable Integrated FIFOs
!One Ethernet MAC 10/100 base-T
– Media Independent Interface (MII) or Reduced Media Independent Interface
(RMII)
– Integrated 28-byte FIFOs and Dedicated DMA Channels for Transmit and
Receive
!One Part 2.0A and Part 2.0B Compliant CAN Controller
– Eight Fully-programmable Message Object Mailboxes, 16-bit Time Stamp
Counter
!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

Board Description
AT91SAM7X-EK Evaluation Board User Guide 3-3
6195E–ATARM–22-Mar-07
!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
!Two 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 Power Width Modulation Controller (PWMC)
!One Two-wire Interface (TWI)
– Master Mode Support Only, All Two-wire Atmel EEPROMs Supported
!One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with
Digital I/Os
!SAM-BA™Boot Assistance
– Default Boot program
– Interface with SAM-BA Graphic User Interface
!IEEE®1149.1 JTAG Boundary Scan on All Digital Pins
!5V-tolerant I/Os, Including 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
– 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 1.65V and 85°C Worst Case Conditions
!Available in a 100-lead LQFP Green Package

Board Description
3-4 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
3.2 AT91SAM7X
Block Diagram
Figure 3-1. Block Diagram
TDI
TDO
TMS
TCK
NRST
FIQ
IRQ0-IRQ1
PCK0-PCK3
PMC
Peripheral Bridge
Peripheral DMA
Controller
AIC
PLL
RCOSC
SRAM
64/32 Kbytes
ARM7TDMI
Processor
ICE
JTAG
SCAN
JTAGSEL
PIOA
USART0
SSC
Timer Counter
RXD0
TXD0
SCK0
RTS0
CTS0
SPI0_NPCS0
SPI0_NPCS1
SPI0_NPCS2
SPI0_NPCS3
SPI0_MISO
SPI0_MOSI
SPI0_SPCK
Flash
256/128 Kbytes
Reset
Controller
DRXD
DTXD
TF
TK
TD
RD
RK
RF
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
Memory Controller
Abort
Status
Address
Decoder
Misalignment
Detection
PIO
PIO
APB
POR
Embedded
Flash
Controller
AD0
AD1
AD2
AD3
ADTRG
PLLRC
13 Channels
PDC
PDC
USART1
RXD1
TXD1
SCK1
RTS1
CTS1
DCD1
DSR1
DTR1
RI1
PDC
PDC
PDC
PDC
SPI0
PDC
ADC
ADVREF
PDC
PDC
TC0
TC1
TC2
TWD
TWCK
TWI
OSC
XIN
XOUT
VDDIN
PWMC
PWM0
PWM1
PWM2
PWM3
1.8 V
Voltage
Regulator
USB Device
FIFO DDM
DDP
Transceiver
GND
VDDOUT
BOD
VDDCORE
VDDCORE
VDDFLASH
AD4
AD5
AD6
AD7
VDDFLASH
Fast Flash
Programming
Interface
ERASE
PIO
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN1
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
VDDIO
TST
DBGU PDC
PDC
PIT
WDT
RTT
System Controller
VDDCORE
CAN CANRX
CANTX
PIO
Ethernet MAC 10/100
ETXCK-ERXCK-EREFCK
ETXEN-ETXER
ECRS-ECOL, ECRSDV
ERXER-ERXDV
ERX0-ERX3
ETX0-ETX3
EMDC
EMDIO
DMA
FIFO
PIOB
SPI1_NPCS0
SPI1_NPCS1
SPI1_NPCS2
SPI1_NPCS3
SPI1_MISO
SPI1_MOSI
SPI1_SPCK
PDC
PDC
SPI1
EF100
SAM-BA
ROM
VDDFLASH

Board Description
AT91SAM7X-EK Evaluation Board User Guide 3-5
6195E–ATARM–22-Mar-07
3.3 AT91SAM7XC
Microcontroller
!Incorporates the ARM7TDMI®ARM®Thumb®Processor
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– EmbeddedICE™, Debug Communication Channel Support
!Internal High-speed Flash
– 256 Kbytes (AT91SAM7XC256) Organized in 1024 Pages of 256 Bytes
– 128 Kbytes (AT91SAM7XC128) Organized in 512 Pages of 256 Bytes
– 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 Write Cycles, 10-year Data Retention Capability,
Sector Lock Capabilities, Flash Security Bit
– Fast Flash Programming Interface for High Volume Production
!Internal High-speed SRAM, Single-cycle Access at Maximum Speed
– 64 Kbytes (AT91SAM7XC256)
– 32 Kbytes (AT91SAM7XC128)
!Memory Controller (MC)
– Embedded Flash Controller, 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
– Four 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)
– 2-wire UART and Support for Debug Communication Channel interrupt,
Programmable ICE Access Prevention
!Periodic Interval Timer (PIT)
– 20-bit Programmable Counter plus 12-bit Interval Counter
!Windowed Watchdog (WDT)

Board Description
3-6 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
– 12-bit key-protected Programmable Counter
– 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
!Two Parallel Input/Output Controllers (PIO)
– Sixty-two 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
!Seventeen Peripheral DMA Controller (PDC) Channels
!One Advanced Encryption System (AES)
– 128-bit Key Algorithm, Compliant with FIPS PUB 197 Specifications
– Buffer Encryption/Decryption Capabilities with PDC
!One Triple Data Encryption System (TDES)
– Two-key or Three-key Algorithms, Compliant with FIPS PUB 46-3
Specifications
– Optimized for Triple Data Encryption Capability
!One USB 2.0 Full Speed (12 Mbits per second) Device Port
– On-chip Transceiver, 1352-byte Configurable Integrated FIFOs
!One Ethernet MAC 10/100 base-T
– Media Independent Interface (MII) or Reduced Media Independent Interface
(RMII)
– Integrated 28-byte FIFOs and Dedicated DMA Channels for Transmit and
Receive
!One Part 2.0A and Part 2.0B Compliant CAN Controller
– Eight Fully-programmable Message Object Mailboxes, 16-bit Time Stamp
Counter
!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
!Two Master/Slave Serial Peripheral Interfaces (SPI)

Board Description
AT91SAM7X-EK Evaluation Board User Guide 3-7
6195E–ATARM–22-Mar-07
– 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 Power Width Modulation Controller (PWMC)
!One Two-wire Interface (TWI)
– Master Mode Support Only, All Two-wire Atmel EEPROMs Supported
!One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with
Digital I/Os
!SAM-BA™Boot Assistance
– Default Boot program
– Interface with SAM-BA Graphic User Interface
!IEEE®1149.1 JTAG Boundary Scan on All Digital Pins
!5V-tolerant I/Os, Including 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
– 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 1.65V and 85°C Worst Case Conditions
!Available in a 100-lead LQFP Green Package
3.4 AT91SAM7XC
Export
Regulations
Statement
These commodities, technology or software will be exported from France and the appli-
cable Export Administration Regulations will apply. French, United States and other
relevant laws, regulations and requirements regarding the export of products may
restrict sale, export and re-export of these products; please assure you conduct your
activities in accordance with the applicable relevant export regulations.

Board Description
3-8 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
3.5 AT91SAM7XC
Block Diagram
Figure 3-2. Block Diagram
TDI
TDO
TMS
TCK
NRST
FIQ
IRQ0-IRQ1
PCK0-PCK3
PMC
Peripheral Bridge
Peripheral DMA
Controller
AIC
PLL
RCOSC
SRAM
64/32 Kbytes
ARM7TDMI
Processor
ICE
JTAG
SCAN
JTAGSEL
PIOA
USART0
SSC
Timer Counter
RXD0
TXD0
SCK0
RTS0
CTS0
SPI0_NPCS0
SPI0_NPCS1
SPI0_NPCS2
SPI0_NPCS3
SPI0_MISO
SPI0_MOSI
SPI0_SPCK
Flash
256/128 Kbytes
Reset
Controller
DRXD
DTXD
TF
TK
TD
RD
RK
RF
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
Memory Controller
Abort
Status
Address
Decoder
Misalignment
Detection
PIO
PIO
APB
POR
Embedded
Flash
Controller
AD0
AD1
AD2
AD3
ADTRG
PLLRC
17 Channels
PDC
PDC
USART1
RXD1
TXD1
SCK1
RTS1
CTS1
DCD1
DSR1
DTR1
RI1
PDC
PDC
PDC
PDC
SPI0
PDC
ADC
ADVREF
PDC
PDC
TC0
TC1
TC2
TWD
TWCK
TWI
OSC
XIN
XOUT
VDDIN
PWMC
PWM0
PWM1
PWM2
PWM3
1.8 V
Voltage
Regulator
USB Device
FIFO DDM
DDP
Transceiver
GND
VDDOUT
BOD
VDDCORE
VDDCORE
VDDFLASH
AD4
AD5
AD6
AD7
VDDFLASH
Fast Flash
Programming
Interface
ERASE
PIO
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN1
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
VDDIO
TST
DBGU PDC
PDC
PIT
WDT
RTT
System Controller
VDDCORE
CAN CANRX
CANTX
PIO
Ethernet MAC 10/100
ETXCK-ERXCK-EREFCK
ETXEN-ETXER
ECRS-ECOL, ECRSDV
ERXER-ERXDV
ERX0-ERX3
ETX0-ETX3
EMDC
EMDIO
DMA
FIFO
PIOB
SPI1_NPCS0
SPI1_NPCS1
SPI1_NPCS2
SPI1_NPCS3
SPI1_MISO
SPI1_MOSI
SPI1_SPCK
PDC
PDC
SPI1
AES 128
PDC
PDC
EF100
SAM-BA
TDES
PDC
PDC
ROM
VDDFLASH

Board Description
AT91SAM7X-EK Evaluation Board User Guide 3-9
6195E–ATARM–22-Mar-07
3.6 Memory !256 Kbytes of Internal High-speed Flash
!64 Kbytes of Internal High-speed SRAM
!Atmel serial DataFlash®
!One footprint for Atmel Serial EEPROM memory. The user can fit an AT24C128AN or
AT24C256AN or AT24C512AN in 8S1 package as well as a cryptomemory
AT88C25616C-SI
3.7 Clock Circuitry !18.432 MHz standard crystal for the embedded oscillator
!32 KHz internal RC oscillator
3.8 Reset Circuitry !Internal reset controller with a bidirectional reset pin
!External reset pushbutton
3.9 Power Supply
Circuitry
!USB powered, the dynamic power consumption on VDDCORE is less than 90 mA at
full speed when running out of the Flash. The total current at power-up is less than
100 mA.
!External power can be applied via USB Power adapter 5V 0.5A with USB A/B cable
!On-chip embedded VDDCORE 1.8V regulator
!On-board 3.3V 400 mA linear regulator
3.10 Remote
Communication
!One Serial interface (DBGU COM Port) via RS-232 DB9 male socket
!One Serial interface (RS232 COM Port) via RS-232 DB9 male socket
!USB V2.0 Full-speed compliant, 12 Mbits per second (UDP)
!One CAN 2.0B communication port via the 3-position printed circuit terminal block
!One MII Ethernet 100-base TX (auto MDI/MDI-X crossover cable)
3.11 Analog Interface !One selectable 0.2% 3.00V Vref or 3.3V ANA
!One 3-position printed circuit terminal block
!Two analog up to Vref inputs. One external user input and one back-looped with
buffered PWM3 output.
!One buffered PWM3 analog output (up to Vref)
3.12 User Interface !One 5-way joystick (4 directions and push for confirmation)
!Four general-purpose buffered green user LEDs (PWM controlled)

Board Description
3-10 AT91SAM7X-EK Evaluation Board User Guide
6195E–ATARM–22-Mar-07
!One yellow power LED (can also be software controlled)
3.13 Debug Interface !20-pin JTAG/ICE interface connector
!DBGU serial RS232 COM Port
3.14 Expansion Slot !One DataFlash card slot
!All I/Os of the AT91SAM7X and the AT91SAM7XC are routed to peripheral extension
connectors (J16). This allows the developer to check the integrity of the components
and to extend the features of the board by adding external hardware components or
boards.