STMPE821 Datasheet (STMicroelectronics)

STMPE821, 8-bit Xpander Logic

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 di

STMPE821 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 mea