XR68C192

The XR68C192 is a Dual Universal Asynchronous Receiver and Transmitter with 8 (XR68C92) or 16 (XR68C192)bytes of transmit and receive FIFOs. The XR68C92/192 is pin-to-pin and functionally compatible to the XR68C681and Philips SCC68681 UART with additional features. The operating speed of the receiver and transmitter can beselectedindependently from a table of twenty four fixed baud rates, a 16X clock derived fromaprogrammablecounter/ timer, or an external 1X or 16X clock. The baud rate generator and counter/timer canoperate directly from a crystalor from external clock input. The XR68C92/192 provides a power down mode inwhich the oscillator is stopped butthe register contents are retained. The XR68C92/192 is fabricated in an advanced CMOSprocess to achieve low powerand high speed requirements.