Datasheet4U Logo Datasheet4U.com

STMPE321 - 3-channel capacitive touch key controller

General Description

The STMPE321 is a 3-channel capacitive touch key controller.

Capacitance measurement is implemented in fully optimized hardware.

All 3 I/Os can be configured via an I2C bus to function as either capacitive touch key, or as GPIOs (general purpose I/O).

Mobile phones a

Key Features

  • Up to 3 GPIOs Up to 3 capacitive touch key inputs Operating voltage 1.65 - 1.95 V Internal regulator Interrupt output pin I2C interface (1.8 V operation, 3.3 V tolerant) 8 kV HBM ESD protection 40 fF resolution, 128-step capacitance measurement Advanced data filtering (AFS) Environment tracking calibration (ETC) Individually adjustable touch variance (TVR) settings for all channels Adjustable environmental variance (E.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
STMPE1208S Xpander Logic STMicroelectronics
STMPE1601 16-bit enhanced port expander STMicroelectronics
STMPE2401 24-bit Enhanced port expander STMicroelectronics
STMPE2403 24-bit Enhanced port expander STMicroelectronics
STMPE811 8-bit port expander STMicroelectronics

Other Datasheets by STMicroelectronics

Part Number Description
STMPE610 Touchscreen Controller
STMPE801 8-bit port expander Xpander logic
STMPE812 Enhanced 4-wire resistive touchscreen controller
STMPS2242 Enhanced dual-channel power switche
STMPS2252 Enhanced dual-channel power switche

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
www.DataSheet4U.com STMPE321 3-channel capacitive touch key controller Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Up to 3 GPIOs Up to 3 capacitive touch key inputs Operating voltage 1.65 - 1.95 V Internal regulator Interrupt output pin I2C interface (1.8 V operation, 3.3 V tolerant) 8 kV HBM ESD protection 40 fF resolution, 128-step capacitance measurement Advanced data filtering (AFS) Environment tracking calibration (ETC) Individually adjustable touch variance (TVR) settings for all channels Adjustable environmental variance (EVR) for optimal calibration Capacitive key sensing capability in 27 µA sleep mode QFN12 (2.2 x 1.5 mm) Description The STMPE321 is a 3-channel capacitive touch key controller. Capacitance measurement is implemented in fully optimized hardware.