MCBSTM32E User's Guide

Push Buttons

The four push buttons on the MCBSTM32E board are:

• The User (S1) push button connects to port pin PG8 of the STM32F103ZE device and is available for general use.
• The Tamper (S2) push button connects to port pin PC13 of the microcontroller controlling the anti-tamper feature of the STM32F103ZE device.
• The Wakeup (S3) push button connects to port pin PA0 of the microcontroller. This wakes up the microcontroller out of sleep mode when R35 is not populated(default). When R35 is populated, PA0 becomes the CTS handshake signal for the on-chip UART, and the Wakeup button does nothing.
• The Reset (S4) push button connects to the voltage monitor and the power-up reset circuit. This resets the microcontroller.