Description
The STMPE812A 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. CSP 12 (2.17 x 1.67 mm)

Features
■ Integrated 4-wire resistive touchscreen controller, pen-down/real-time mode, fully- autonomous
■ 12-bit ADC for high-resolution touchscreen
■ Operating voltage 1.65 - 3.6 V
■ Low power consumption: – Hibernation mode: 0.5 µA – Active mode: 100 µA
■ Auto-hibernation and hotkey wake-up features
■ Up to 3 GPIOs with alternate functions – 1 PWM controller – 1 general purpose 12-bit ADC input – Optional interrupt output pin
■ Dedicated reset input pin
■ 400 kHz I2C interface
■ 8 kV HBM, 1 kV CDM ESD protection on X+/X-/Y+/Y-
■ 2 kV HBM, 250 V CDM ESD protection on all other pins

Applications
■ Portable media players
■ Game consoles
■ Mobile and smart phones