2-4 AT91SAM9XE-EK Evaluation Board User Guide
6311A–ATARM–04-Feb-08
2.4 Powering Up the Board
The AT91SAM9XE-EK requires 5V DC (±5%). DC power is supplied to the board via the 2.1 mm by 5.5
mm socket J1. Coaxial plug center positive standard.
2.5 Backup Power Supply
The user has the possibility to plug a battery (3V Lithium Battery CR1225 or equivalent) in order to per-
manently power the backup part of the device. In this case, J10 configuration must be set in position 1, 2.
Refer to Section 4.1.
2.6 Getting Started
The AT91SAM9XE-EK evaluation board is delivered with a CD-ROM containing all necessary informa-
tion and step-by-step procedures for working with the most common development toolchains. Please
refer to this CD-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 AT91SAM9XE-EK.