STMPE812 Datasheet - ST Microelectronics

STMPE812 Enhanced 4-wire resistive touchscreen controller

The STMPE812 is a 4-wire resistive touchscreen controller with 4-bit port expander integrated. The touchscreen controller is designed to be fully autonomous, requiring only minimal CPU intervention for sampling, filtering and preprocessing operations. Table 1. Device summary Order code STMPE812BJR .

STMPE812 Features

* 4 GPIOs (8 mA drive, 12 mA sink at 3.3 V)

* 1 additional, general purpose 12-bit ADC

* Operating voltage 1.65 - 3.6 V t(s)

* Integrated 4-wire touchscreen controller, pendown/real-time mode, fully-autonomous uc

* 1 PWM controller d

* Auto-hibernation and low power ro

STMPE812_STMicroelectronics.pdf