This application note provides detailed instructions on the hardware and software configuration of the STMPE812A touchscreen controller.
The document serves as a comprehensive guide for operating the STMPE812A device in various applications. It complements the datasheet by detailing necessary hardware configurations, including external components, PCB layout considerations, and power supply requirements to ensure optimal performance.
The second part of the note focuses on software implementation, providing programming reference codes and instructions for initializing the touchscreen controller, handling interrupts, and configuring GPIOs, ADCs, and PWM modules.
| Operating Voltage Range | 1.65 V to 3.6 V |
|---|---|
| Power Consumption Minimum | at Voc = 1.8 V |
| ADC Resolution | 12-bit |
The device operates with a Vcc voltage between 1.65 V and 3.6 V.
A pull-up resistor between 2.2k and 10kQ must be connected at RESET.
The device enters Hibernation mode when there is no transaction, PWM activity, ADC activity, GPIO transition, or touch interrupt for 10 ms.