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ISG4100x - Mobile Key Scan I/O companion

Datasheet Summary

Description

The ISG4100x Mobile Key Scan I/O companion is a dedicated device to unburden a host processor from scanning a matrix-addressed keypad.

It communicates with the host through an I2Ccompatible or SPI-compatible access bus interface.

An interrupt output is available for signaling key-press events.

Features

  • 1.2.1. z z z z z z z z z z z z Features Supports keypad matrices of up to 8 x 8 keys (Max 64 keys) Supports multiple-key detection Supports long key-press detection Key-Scan Event storage in a FIFO buffer for up to 16 events Hardware Interrupt at the FIFO Level Auto-Sleep and Auto-WakeUp to minimize current consumption 8000V ESD protected I/O Supports I2C-compatible access bus interface in slave mode up to 400kbps (Fast mode). (ISG4100I only) Supports SPI-compatible access bus interface in slav.

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Datasheet Details

Part number ISG4100x
Manufacturer Imagis Semiconductor
File Size 113.50 KB
Description Mobile Key Scan I/O companion
Datasheet download datasheet ISG4100x Datasheet
Additional preview pages of the ISG4100x datasheet.

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    Full PDF Text Transcription

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    Imagis Co., Ltd. ISG4100x Preliminary Datasheet 1. Overview 1.1. Description The ISG4100x Mobile Key Scan I/O companion is a dedicated device to unburden a host processor from scanning a matrix-addressed keypad. It communicates with the host through an I2Ccompatible or SPI-compatible access bus interface. An interrupt output is available for signaling key-press events. In the I2C communication, frequencies up to 400KHz bus speed are supported. In the SPI communication, frequencies up to 10MHz bus speed are supported. ISG4100x supports a predefined set of commands. These commands enable a host device to keep control over all functions. 1.1.1. Block Diagram of ISG4100I www.DataSheet.net/ Figure 1 Block Diagram of ISG4100I CONFIDENTIAL - 1/7 - 2009-02-05 Datasheet pdf - http://www.
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