Datasheet4U Logo Datasheet4U.com

LM8333 Datasheet Mobile I/o Companion Supporting Key-scan

Manufacturer: Texas Instruments

Overview: LM8333 www.ti.com SNLS246K – SEPTEMBER 2006 – REVISED MAY 2013 LM8333 Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.

General Description

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 cellphones, PDAs, games, and other handheld applications.

Key press and release events are encoded into a byte format and loaded into a FIFO buffer for retrieval by the host processor.

Key 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) External Interrupts.
  • 15-byte FIFO Buffer to Store Key Pressed and Key Released Events.
  • Error Control with Error Reports on (FIFO Overrun, Keypad Overrun, Invalid Command).
  • Host P.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
National Semiconductor Logo LM8333 Keypad Controller National Semiconductor

More Datasheets from Texas Instruments

Part Number Description
LM833 Dual High-Speed Audio Operational Amplifier
LM833-N Dual Audio Operational Amplifier
LM8330 Keypad Controller
LM8335 General Purpose Output Expander
LM8300 Four Wire Resistive Touchscreen Controller
LM8323 key-scan controller
LM8325-1 GenI/O - Expander and Keypad Controller
LM8327 GenI/O - Expander and Keypad Controller
LM8328 GenI/O - Expander and Keypad Controller
LM8342 Programmable TFT Calibrator

LM8333 Distributor