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STMPE812 - Enhanced 4-wire resistive touchscreen controller

Description

The STMPE812 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.

Table 1.

Features

  • 4 GPIOs (8 mA drive, 12 mA sink at 3.3 V).
  • 1 additional, general purpose 12-bit ADC.
  • Operating voltage 1.65 - 3.6 V t(s).
  • Integrated 4-wire touchscreen controller, pendown/real-time mode, fully-autonomous uc.
  • 1 PWM controller d.
  • Auto-hibernation and low power ro.
  • Typ 0.5 µA in Hibernation mode P.
  • Typ 100 µA in Active mode te.
  • Interrupt output pin (optional) le.
  • Reset input pin (optional) so.
  • Wake-up feature on each port configure.

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Full PDF Text Transcription

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STMPE812 S-Touch® enhanced 4-wire resistive touchscreen controller with PWM Features ■ 4 GPIOs (8 mA drive, 12 mA sink at 3.3 V) ■ 1 additional, general purpose 12-bit ADC ■ Operating voltage 1.65 - 3.6 V t(s) ■ Integrated 4-wire touchscreen controller, pendown/real-time mode, fully-autonomous uc ■ 1 PWM controller d ■ Auto-hibernation and low power ro – Typ 0.
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