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Technical Support
On-Line Manuals
MCBSTR9 User's Guide
Introduction
Setup
Theory of Operation
Block Diagram
Schematics
Technical Data
Prototyping Area
Microcontroller
Power Supply
Configuration
JTAG Interface
LCD Panel
LEDs
Push Buttons
Potentiometer
Serial Ports
CAN Interface
USB Interface
Ethernet Interface
SD Connector
Writing Programs
Example Programs
STR91x Software Library
Interrupt Functions
Serial Ports
The MCBSTR9 board connects the two on-chip serial UARTs to the ST3232 (IC7), which converts the logic signals to RS-232 voltage levels.
The serial ports (COM1 and COM2) are configured as a standard 3-wire interface. The DB9 connector is wired to loop the PC's handshaking signals back to the PC. Refer to the figure below for details.
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