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Serial Port

The MCBSTM32C board connects the on-chip serial UART to the ST3232 (IC7), which converts the logic signals to RS-232 voltage levels.

MCBSTM32C Board Serial Port

The serial port (COM) is configured as a standard 5-wire interface. The DB9 connector is wired directly to the ST3232 serial UART. Refer to the figure below for details.

Serial Port DB9 Diagram

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