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Setting Up the AT91SAM7A3-EK Evaluation Board
2.4
2.5
2.6
Powering Up the
Board
Backup Power
Supply
Getting Started
AT91SAM7A3 is self-powered by the USB port or by a USB power adapter.
The user may add a battery (SAFT LS14250 3.6V or equivalent) in order to permanently
power the backup part of the device. In this case, the configuration of J16, S6 and S7
must be changed.
Refer to Table 4-1 .
The AT91SAM7A3-EK evaluation board is delivered with a DVD-ROM containing all
necessary information and step-by-step procedures for working with the most common
development tool chains. Please refer to this DVD-ROM, or to the Atmel web site,
http://www.atmel.com/products/AT91/ , for the most up-to-date information on getting
started with the AT91SAM7A3-EK.
Note that the AT91SAM7A3 microcontroller fitted on the evaluation board has been pro-
grammed with the SAM Boot Assistant (SAM-BA ? ) which provides an easy way to
program the embedded Flash memory through the USB or DBGU communication
channel.
Programming through DBGU requires that the evaluation kit is powered using a Power
Supply USB Adapter
Note: The SAM-BA Boot Assistant resides in the embedded Flash memory and will be
deleted when programming the Flash. A JTAG/ICE interface is required to recover
SAM-BA Boot Assistant.
AT91SAM7A3-EK Evaluation Board User Guide
2-3
6165C–ATARM–26-Jun-06
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