STMicroelectronics STMPE811
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). 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.| Part No. | STMPE811 |
|---|---|
| Datasheet | STMPE811 Download |
| Manufacturer |  STMicroelectronics |
| Description | 8-bit port expander |
| Buy | Stock & Price |
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) QFN16
DESCRIPTION
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. A 4-wire touchscreen controller is built into the STMPE811. The touchscreen controller is enhanced with a movement tracking algorithm to avoid excessive data, 128 x 32 bit buffer and a programmable active window feature.APPLICATIONS
●●
● Portable media players Game consoles Mobile and smart phones Table 1. Device summary Order code STMPE811QTR Package QFN16 Packaging Tape and reel June 2008 Rev 1 1/54 54 This is preliminary information on a new product now in development or undergoing evaluation.
