Links

Source GitHub repository:

https://github.com/electronicayciencia/EasyMCP2221

[Spanish] Blog post about the MCP2221A. Description of the chip and interface project with schematics.

https://www.electronicayciencia.com/2023/09/integrado-mcp2221.html

MCP2221 and MCP2221A - USB 2.0 to I2C/UART Protocol Converter with GPIO - Microchip Inc.

https://www.microchip.com/en-us/product/MCP2221

https://www.microchip.com/en-us/product/MCP2221A

24LC128 - 128Kb I2C compatible 2-wire Serial EEPROM - Microchip Inc.

https://www.microchip.com/en-us/product/24LC128

CircuitPython Libraries on any Computer with MCP2221.

A similar project but using Adafruit’s MCP2221A breakout board instead of a bare chip.

https://learn.adafruit.com/circuitpython-libraries-on-any-computer-with-mcp2221

https://github.com/adafruit/Adafruit_Blinka/blob/main/src/adafruit_blinka/microcontroller/mcp2221/mcp2221.py

Another breakout board: Artekit AK-MCP2221

https://www.artekit.eu/doc/guides/ak-mcp2221/