Keil Logo

Serial Port

The MCBSTM32F200 board connects the on-chip serial UART to the ST3232C (IC17), which converts the logic signals to RS-232 voltage levels.

MCBSTM32F200 Board Serial Port

Jumpers J13 and J14 allow you to connect transmit data (TXD) and receive data (RXD) signals from the ST3232C to UART1 or UART3/UART4 on the MCU.

Note

  • For V1.1 boards only, the RX3/4-RX1 label printed at J13, and the TX3/4-TX1 label printed at J14 are incorrect. For this version of the board, they should be labeled:
    J13 TX1-TX3/4
    J14 RX1-RX3/4
    as shown in the above picture.

The serial port (UART1/3/4) is configured as a standard 3-wire interface. The DB9 connector is wired directly to the ST3232C serial interface. Refer to the figure below for details.

Serial Port DB9 Diagram

  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.