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IS31IO7326 - DEBOUNCED 8 X 8 KEY-SCAN CONTROLLER

Datasheet Summary

Description

The IS31IO7326 is a 64 key, key-scan controller.

It offloads the burden of keyboard scanning from the host processor.

The IS31IO7326 supports keypad matrix of up to 8×8.

Features

  • 2.4V to 5.5V operation 400kHz I2C serial interface Available for multi-key press detect Low 0.3μA (typ. ) standby current Operate in -40°C to +125°C Pb-free 4mm × 4mm QFN-24 package.

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Datasheet preview – IS31IO7326

Datasheet Details

Part number IS31IO7326
Manufacturer ISSI
File Size 444.12 KB
Description DEBOUNCED 8 X 8 KEY-SCAN CONTROLLER
Datasheet download datasheet IS31IO7326 Datasheet
Additional preview pages of the IS31IO7326 datasheet.

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Full PDF Text Transcription

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IS31IO7326 DEBOUNCED 8×8 KEY-SCAN CONTROLLER January 2012 GENERAL DESCRIPTION The IS31IO7326 is a 64 key, key-scan controller. It offloads the burden of keyboard scanning from the host processor. The IS31IO7326 supports keypad matrix of up to 8×8. Key press and release events are encoded into a byte format and loaded into a key event register for retrieval by the host processor. The IS31IO7326 integrates a debounce function which rejects false or transient key switch activities. The interrupt output (INT) is used to signify if there are any keypad activities. To minimize power, the IS31IO7326 automatically enters a low power standby mode when there is no keypad, I/O, or host activity. The IS31IO7326 is available in a Pb-free 4mm × 4mm QFN-24 package.
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