LM8333 Datasheet - Texas Instruments

LM8333 Mobile I/O Companion Supporting Key-Scan

The LM8333 Mobile I/O Companion offloads the burden of keyboard scanning from the host, while providing extremely low power consumption in both operational and standby modes. It supports keypad matrices up to 8 × 8 in size (plus another 8 specialfunction keys), for portable applications such as cell.

LM8333 Features

* 1

* 2 8 × 8 Standard Keys

* 8 Special Function Keys (SF Keys) Providing a Total of 72 Keys for the Maximum Keyboard Matrix

* ACCESS.Bus (I2C-compatible) Communication Interface to the Host

* Four General Purpose Host Programmable I/O Pins with Two Optional (Slow) Exter

LM8333-etcTI.pdf