Powering Up The Board; Backup Power Supply; Getting Started - Atmel AT91SAM7A3-EK User Manual

2.4 Powering Up the
Board
2.5 Backup Power
Supply
2.6

Getting Started

AT91SAM7A3-EK Evaluation Board User Guide
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
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.
Setting Up the AT91SAM7A3-EK Evaluation Board
™
) which provides an easy way to
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