STMPE811 pdf(8-bit port expander with advanced touch screen c

The STMPE811 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 IC is often used

in mobile-mulTImedia platforms to solve the

problems of the limited amounts of GPIOs usually

available on the digital engine.