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LM8322 Datasheet Mobile I/o Companion Supporting Key-scan

Manufacturer: National Semiconductor Corporation

Overview: LM8322 Mobile I/O panion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface May 2007 LM8322 Mobile I/O panion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface 1.

General Description

The LM8322 Mobile I/O panion is a dedicated device to unburden a host processor from scanning a matrix-addressed keypad.

In addition, the LM8322 provides general-purpose I/O expansion, and PWM outputs useful for dynamic LED brightness modulation.

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Key Features

  • Key Features.
  • Supports keypad matrices of up to 8 × 12 keys plus 8 special-function (SF) keys for a total of 104 keys. SF keys pull keypad scan inputs directly to ground, rather than connecting to a keypad scan output.
  • Supports I2C-compatible ACCESS. bus interface in slave mode up to 400 kHz (Fast-mode). 3.0.

More Datasheets from National Semiconductor Corporation

Part Number Description

LM8322 Distributor