The document provides preliminary information on the STMPE811, an 8-bit port expander with an advanced touchscreen controller.
It features 8 GPIOs, 1.8 - 3.3 V operating voltage, integrated 4-wire touchscreen controller, interrupt output pin, SPI and I2C interface, 8-input 12-bit ADC, and 128-depth buffer touchscreen controller.
The device is designed for use in portable media players, game consoles, and mobile and smart phones.
It also includes a GPIO expander to interface with a main digital ASIC via a two-line bidirectional bus.
The document also provides details on the pin configuration and functions, I2C and SPI interface, I2C features, and timing diagrams.