Table of Contents
Section 1
Overview............................................................................................... 1-1
1.1
1.2
1.3
Scope ........................................................................................................1-1
Deliverables ..............................................................................................1-1
AT91SAM7A1 Evaluation Board ...............................................................1-1
Section 2
Setting Up the AT91SAM7A1-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 AT91SAM7A1 ...........................2-2
AT91SAM7A1-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
AT91SAM7A1-EK Top Level.....................................................................3-1
AT91SAM7A1 Processor ..........................................................................3-1
Power Supply Block ..................................................................................3-1
Application Interface .................................................................................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 ...........................................................................................3-6
External Bus Interface...............................................................................3-6
ICE Interface .............................................................................................3-7
Default Strap Configuration.......................................................................3-7
Section 4
Schematics ........................................................................................... 4-1
4.1
Schematics ...............................................................................................4-1
AT91SAM7A1-EK Evaluation Board User Guide
i
6114A–ATARM–09/04
Section 1
Overview
1.1
Scope
The AT91SAM7A1-EK Evaluation Board enables real-time code development and evalu-
ation. It supports the AT91SAM7A1 microcontroller.
1.2
Deliverables
The evaluation board is supplied with:
an AT91SAM7A1 evaluation board called the AT91SAM7A1-EK
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
The board consists of:
AT91SAM7A1
Evaluation Board
The Atmel AT91SAM7A1 ARM-based microcontroller
Memories
– 512 Kbyte 16-bit/8-bit SRAM
– 2 Mbyte 16-bit Flash
Footprint for an 8 Kbyte SPI EEPROM
Communications interface
– 1 CAN port wired on SubD9 connector
– 2 LIN ports and 1 RS232 interface
– 1 LIN port and 2 RS232 interfaces
– 1 LIN port and 1 RS232 modem-compliant interface
AT91SAM7A1-EK Evaluation Board User Guide
1-1
6114A–ATARM–09/04
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