Key-Scan Controller 24-Pin QFN T/R

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 x 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 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 x 4mm QFN-24 package.

• 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 x 4mm QFN-24 package