I2C-RS232C Converter

Feature

• This adapter converts the I2C port of a microcontroller into an RS232C communication port.
• It can be controlled as an I2C device from a microcontroller, and can set the UART baud rate, send, and receive.
• It is equipped with the I2C/UART protocol bridge SC16IS750 and the RS232C conversion IC ADM3202.
• The I2C connector is Grove compatible and supports 3.3V/5V power supplies.
• The RS232C port is equipped with a D-sub9 male connector.
• The I2C/UART protocol bridge SC16IS750 has a built-in 64-byte buffer.
• It is equipped with a 7.3728MHz crystal oscillator, and the UART baud rate can be set independently of the microcontroller's main clock.
• The default I2C address is 8bit:0x9A (7bit:0x4D).

Note

• The only signals that are converted to RS232C levels are the 2nd pin of the D-sub9 receiving pin and the 3rd pin of the transmitting pin.
• If you are using a device other than the Arduino Uno, please change the Wire definition near line 29 of the sample code SC16IS750.cpp as necessary.

Details

Sample Code & Details