3.4.11.1 Push Button Switches

The board features four push buttons:

  • One Board Wake-up push button (SW1) connected to the WKUP signal. It is used to wake up the MPU from a Low-Power state.
  • One User push button (SW2) connected to PIO PC10. This is for user usage.
  • One Start push button (SW3) connected to the MCP16502 pin. When pressed, the PMIC start-up sequence is initiated if the buck converters are off. Pressing the Start button will also assert the WKUP signal to wake up the MPU from a Low-Power state.
  • One Board Reset push button (SW4). When pressed, the processor is reset.
Figure 3-45. Push Button Schematics