DESCRIPTION

· The STMPE811 is a GPIO port expander designed to interface with a main digital ASIC via a two-line bidirectional bus (I2C).

· It is commonly used in mobile multimedia platforms to address the limited GPIO availability on digital engines.

· Each I/O can be configured as input, output, or specific functions, offering great flexibility.

· The device features low quiescent current and includes a wakeup feature for each I/O to optimize power consumption.

· It integrates a 4-wire touchscreen controller with a movement tracking algorithm, a 128 x 32-bit buffer, and a programmable active window feature.

FEATURES

· 8 GPIOs with 1.8 - 3.3 V operating voltage.

· Integrated 4-wire touchscreen controller with interrupt output pin.

· Wakeup feature on each I/O for power optimization.

· Supports SPI and I2C interfaces, with up to 2 devices sharing the same bus in I2C mode.

· 8-input 12-bit ADC and 128-depth buffer for touchscreen control.

· Touchscreen movement detection algorithm for efficient data handling.

· 25 kV air-gap ESD protection (system level) and 4 kV HBM ESD protection (device level).p>

APPLICATIONS

· Portable media players and game consoles.

· Mobile devices and smartphones.

· GPS systems.