STMPE811中文资料S-Touch® advanced resistive touchscreen controller with 8-bit GPIO expander数据手册ST规格书

描述 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 (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 STMPE811 offers great flexibility, as each I/O can be configured as input, output or specific functions. The device has been designed with very low quiescent current and includes a wakeup feature for each I/O, to optimize the power consumption of the device.
A 4-wire touchscreen controller is built into the STMPE811. The touchscreen controller is enhanced with a movement tracking algorithm (to avoid excessive data), a 128 x 32 bit buffer and programmable active window feature.

特性 Features

8 GPIOs
1.8 - 3.3 V operating voltage
Integrated 4-wire touchscreen controller
Interrupt output pin
Wakeup feature on each I/O
SPI and I2C interface
Up to 2 devices sharing the same bus in I2C mode (1 address line)
8-input 12-bit ADC
128-depth buffer touchscreen controller
Touchscreen movement detection algorithm
25 kV air-gap ESD protection (system level)
4 kV HBM ESD protection (device level)

简介

STMPE811属于集成电路（IC）的触摸屏控制器。由制造生产的STMPE811触摸屏控制器触摸屏控制器是一种集成电路，可在触摸屏传感器阵列与屏幕操作的设备之间提供接口。该控制器从传感器阵列（通常是电阻式或电容式）接收位置信息。然后，位置信息又通过串行、并行、USB 或 UART 接口传递给微控制器。