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STMPE821 Datasheet 8-bit Xpander Logic

Manufacturer: STMicroelectronics

Overview: STMPE821 8-bit Xpander Logic™ with touchkey controller Preliminary.

General Description

The STMPE821 is a GPIO (general purpose input/output) port expander able to interface a main digital ASIC via the two-line bidirectional bus (I2C).

A separate GPIO expander is often used in mobile multimedia platforms to solve the problems of the limited amount of GPIOs typically available on the digital engine.

The STMPE821 offers great flexibility, as each I/O can be configured as input, output or specific functions.

Key Features

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  • to 8 GPIOs to 8 touchkey capacitive touch inputs Operating voltage 1.8 - 5.5 V Internal regulator Interrupt output pin I2C interface 8 kV HBM ESD protection 40 fF resolution, 128 steps capacitance measurement (5.0 pF dynamic range) Advanced data filtering (AFS) Environment tracking calibration (ETC) Individually adjustable touch variance (TVR) setting for all channels Adjustable environmental vari.

More Datasheets from STMicroelectronics

Part Number Description
STMPE811 8-bit port expander
STMPE1208S Xpander Logic
STMPE1601 16-bit enhanced port expander
STMPE2401 24-bit Enhanced port expander
STMPE2403 24-bit Enhanced port expander
STMPS2141 Enhanced single channel power switche
STMPS2151 Enhanced single channel power switche
STMPS2161 Enhanced single channel power switche
STMPS2171 Enhanced single channel power switche
STMPS2262 (STMPS2262 / STMPS2272) Enhanced Power Switch

STMPE821 Distributor