3.4.13.1 Push Button Switches

The SAM9X75 Curiosity Pro 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 start push button (SW2) connected to the MCP16502 nSTRT pin. When pressed, the PMIC start-up sequence is initiated if the buck converters are off. Pressing the Start button also asserts the WKUP signal to wake up the MPU from a Low-Power state.
  • One user push button (SW3) connected to a PIO. This button is available for user-defined applications.
  • One board reset push button (SW4). When pressed, the processor is reset.
Figure 3-42. Push Buttons