The XR20M1280 is a single-channel I2C/SPI Universal Asynchronous Receiver and Transmitter.
Integrated Level Shifters on CPU interface,
UART and GPIO signals
(UART) with integrated level shifters and 128 bytes of transmit and receive FIFOs. For flexibility in a mixed voltage environment, the XR20M1280 has 4 VCC pins. There is a VCC pin for.
Selectable I2C/SPI bus interface.
26MHz maximum SPI clock.
24Mbps maximum UART data rate
the core, a VCC pin for the UART signals,.
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