Exar’s I2 C/SPI UARTs can easily be added to an embedded system design using a simple 2-wire (I2 C) or 4-wire (SPI) interface. In addition to the UART ports, the XR20Mxxxx has up to 16 GPIOs that can be used for controlling or monitoring different functions in the embedded system. A custom Linux software driver is available for download from Exar’s website. For further technical assistance, please contact Exar’s UART technical support team.

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