TCA8418 Datasheet - Texas Instruments

TCA8418 - I2C Controlled Keypad Scanner

The TCA8418 is a keypad scan device with integrated ESD protection. It can operate from 1.65 V to 3.6 V and has 18 general purpose inputs/outputs (GPIO) that can be used to support up to 80 keys via the I2C interface. The key controller debounces inputs and maintains a 10 byte FIFO of key-press and .

TCA8418 Features

* 1 Operating Power-Supply Voltage Range of 1.65-V to 3.6-V

* Supports 80 Buttons With Use of 18 GPIOs

* Supports QWERTY Keypad Operation Plus GPIO Expansion

* Low Standby (Idle) Current Consumption: 3 μA

* Supports 1-MHz Fast Mode Plus I2C Bus

* 10 Byt

TCA8418-etcTI.pdf