Data Brief

For further information contact your local STMicroelectronics sales office.

July 2007

Rev 1

1/3

3

STMPE811

8-bit port expander with advanced touch screen controller

Features

mode (1 address line)

avoid excessive data

Description

The STMPE811 is a GPIO (General Purpose

Input/Output) port expander able to interface a

main digital ASIC via the two-line bidirectional bus

in mobile-multimedia platforms to solve the

problems of the limited amounts of GPIOs usually

available on the digital engine.

The STMPE811 offers great flexibility as each

I/Os can be configured as input, output or specific

functions. The device has been designed with

very low quiescent current and includes a wake-

up feature for each I/O, to optimize the power

consumption of the IC.

A 4-wire touch screen controller is built into the

STMPE811. The touch screen controller is

enhanced with movement tracking algorithm, 128-

depth buffer and a programmable active window

feature.

QFN16

TSSOP16

www.st.com

Table 1. Device summary

Order code

Package

Packaging

STMPE811QTR

QFN16

Tape and reel

STMPE811TTR

TSSOP16

Tape and reel