Table of Contents
Section 1
Overview ............................................................................................... 1-1
1.1
1.2
1.3
Scope ........................................................................................................1-1
Deliverables ..............................................................................................1-1
AT91SAM7A2 Evaluation Board ...............................................................1-1
Section 2
Setting Up the AT91SAM7A2-EK Evaluation Board ............................. 2-1
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Requirements............................................................................................2-1
Electrostatic Warning ................................................................................2-1
Layout .......................................................................................................2-1
Voltage ......................................................................................................2-2
Powering Up the Board .............................................................................2-2
Measuring Current Consumption on the AT91SAM7A2 ...........................2-2
AT91SAM7A2-EK Block Diagram .............................................................2-3
Section 3
Board Description ................................................................................. 3-1
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
AT91SAM7A2-EK Top Level.....................................................................3-1
AT91SAM7A2 Processor ..........................................................................3-1
Power Supply Block ..................................................................................3-1
Application Interface .................................................................................3-2
Serial Communication Ports......................................................................3-2
CAN Bus ...................................................................................................3-2
LIN Buses and RS-232 Lines....................................................................3-3
Crystal Oscillators and Clock Distribution .................................................3-5
Memory Organization................................................................................3-5
I/O Expansion ...........................................................................................3-5
External Bus Interface...............................................................................3-5
ICE Interface .............................................................................................3-6
Section 4
Schematics ........................................................................................... 4-1
4.1
Schematics ...............................................................................................4-1
AT91SAM7A2-EK Evaluation Board User Guide
i
6115B–ATARM–10-May-05
Section 1
Overview
1.1
Scope
The AT91SAM7A2-EK Evaluation Board enables real-time code development and evalu-
ation. It supports the AT91SAM7A2 microcontroller.
1.2
Deliverables
The evaluation board is supplied with:
!
an AT91SAM7A2-EK evaluation board featuring an AT91SAM7A2 with an LCD
connected
!
a bare power lead, a fuse, 2 jumpers
!
a 25-pin parallel cable
!
the AT91 CD-ROM including:
– 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
AT91SAM7A2
The board consists of:
Evaluation Board
!
The Atmel AT91SAM7A2 ARM-based microcontroller
!
Memories
– 512 Kbyte 16-bit SRAM
– 2 Mbyte 16-bit Flash
!
Footprint for an 8 Kbyte SPI EEPROM
!
Serial Communication Lines
– 4 CAN ports (3 wired on SubD9 connector and 1 wired on a 10-pin connector)
– 2 LIN ports
– 1 RS232 interface
AT91SAM7A2-EK Evaluation Board User Guide
1-1
6115B–ATARM–10-May-05
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