10 External Interfaces

The ATWINC3400-MR210CA external interfaces include:

I²C for debugging
SPI for control and data transfer
UART for debugging
General Purpose Input/Output pins⁽¹⁾

Note:

Usage of the GPIO functionality is not supported by the ATWINC3400 firmware. The data sheet will be
updated once the support for this feature is added.

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.