The XR21B1411 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) with a USB interface. The USB interface is fully compliant to Full Speed USB 2.0 specification that supports 12Mbps USB data transfer rate. The USB interface also supports USB suspend, resume and remote wakeup operations.
±15kV HBM ESD on USBD+/USBD- USB 2.0 Compliant, Full-Speed (12Mbps) Supports USB suspend, resume and remote wakeup operations Unique pre-programmed USB serial number Enhanced UART Features Fractional Baud Rate Generator 128byte TX FIFO 384byte RX FIFO 7, 8 or 9 data bits 1 or 2 stop bits Odd, even, mark, space or no parity Automatic Hardware (RTS/CTS or DTR/DSR) Flow Control Automatic Software (Xon/Xoff) Flow Control Multidrop mode Auto Transceiver Control Half-Duplex mode Selectable GPIO or Modem I/O Internal 48MHz clock with clock divisors programmable down to 6MHz Single +5V power supply 5V tolerant inputs
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