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On-Line Manuals
MCBSTM32F200/400 User's Guide
Introduction Setup 
Theory of Operation 
Block Diagram Schematics Technical Data Prototyping Area Microcontroller Power Supply Configuration JTAG Interface ETM Interface LCD Panel w/Touch Screen Camera LEDs Push Buttons Joystick Potentiometer Speaker/Headphone Microphone Serial Port CAN Interface USB Interface Ethernet Interface MicroSD Connector Accelerometer External Memory Writing Programs Example ProgramsSerial Port
The MCBSTM32F200 board connects the on-chip serial UART to the ST3232C (IC17), which converts the logic signals to RS-232 voltage levels.
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.
Jumpers J13 and J14 allow you to connect transmit data (TXD) and receive data (RXD) signals from the ST3232C to USART3/UART4 or USART1 on the MCU.
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