4-wire resistive touch screen controller with GPIOs from STMicroelectronics

Image of STMicroelectronics' STMPE811STMicroelectronics' STMPE811 is a 4-wire resistive touch screen controller with a GPIO (general purpose input/output) port expander able to interface a microcontroller or a main digital ASIC via I2C or SPI serial interface. The STMPE811 offers great flexibility, as each I/O can be configured as input, output or specific functions. The touch screen controller is enhanced with a movement tracking algorithm to avoid excessive data, 128 x 32 bit buffer and a programmable active window feature.


  • Small package: QFN16 3 mm x 3 mm
  • 12-bit ADC for high-resolution resistive touch screen
  • 128-depth data buffer
  • Advance movement tracking to reduce CPU/Bus utilization
  • Window-masking function
  • Fast I2C (400 KHz) or SPI (1 MHz) serial interface
  • Up to 8 GPIO
  • 8 addiditional ADC inputs
  • 4 kV HBM ESD protection


  • Portable media players
  • Game consoles
  • Mobile and smart phones


ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
STMPE811QTR datasheet linkIC TSC I/O EXPAND 8B 16QFNSTMPE811QTRIC TSC I/O EXPAND 8B 16QFN18922 - Immediate
STMPE811QTR product page link
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Published: 2013-03-01