Digital I/O Wildcard User Guide

Introduction

digital I/O expansion module

This document describes how to use the Digital I/O Wildcard, providing an overview of the hardware and software and a schematic.

This tiny 2" by 2.5" module is a member of the Wildcard™ series that connects directly to Mosaic embedded controllers.

The Digital I/O Wildcard allows you to easily add up to 20 lines of digital I/O to your system. It can be used to expand the I/O of any of Mosaic�s controller products. The following sections guide you through the Digital I/O Wildcard�s hardware and software.

Table 1-1 Digital I/O Wildcard Specifications

Channels
Configurable Channels:	16, configurable as input or output in groups of 4
Fixed Input Channels:	4
Inputs
Input Voltage Range:	0 - 5 V ( -0.5 to 5.5 absolute max)
Input Low Voltage:	< 0.80 V
Input High Voltage:	> 2.0 V
Input Leakage Current:	± 10 uA
Outputs
Output Voltage Range:	0 - 5 V ( -0.5 to 5.5 absolute max)
Output Low Voltage:	< 0.5 V at 24 mA
Output High Voltage:	> 3.5 V typ., 5.0 V pulled up, > 2.4 V at -4.0 mA
Output Current:	24 mA sink, 4 mA source
Pull up/down
Optional Pull-up/down:	10 KOhm, jumper selectable pull up/down

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Table of Contents

Digital I/O Wildcard User Guide

Introduction