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<strong>VIPER</strong> <strong>Technical</strong> <strong>Manual</strong>Detailed hardware descriptionThe general-purpose inputs are 5V tolerant, and the outputs can sink and source up to24mA @ 3.3V.OUT0B is an inverted OUT0 signal, and is driven to 3.3V, which provides compatibilitywith the <strong>VIPER</strong>-UPS.The following general purpose IO lines are used by the <strong>VIPER</strong>-UPS:FunctionExternal Power FailBattery LowUPS Power downIOIN0IN1OUT0B<strong>VIPER</strong>-I/OThe <strong>VIPER</strong>-I/O is a low cost add-on I/O module for the PXA255 board <strong>VIPER</strong>. Theboard provides a variety of I/O features without the additional costs of a full PC/104interface. Please refer to the <strong>VIPER</strong>-I/O <strong>Technical</strong> <strong>Manual</strong> on the Development Kit CD.© 2007 Arcom Issue D 59
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