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XR88C681
CMOS Dual Channel UART (DUART)
FEATURES
D Two Full Duplex, Independent Channels D Asynchronous Receiver and Transmitter D Quadruple-Buffered Receivers and Dual Buffered
Transmitters D Programmable Stop Bits in 1/16 Bit Increments D Internal Bit Rate Generators with More than 23 Bit
Rates D Independent Bit Rate Selection for Each Transmitter
and Receiver D External Clock Capability D Maximum Bit Rate: 1X Clock - 1Mb/s, 16X Clock -
125kb/s D Normal, AUTOECHO, Local LOOPBACK and
Remote LOOPBACK Modes D Multi-function 16 Bit Counter/Timer D Interrupt Output with Eight Maskable Interrupt
Conditions D Interrupt Vector Output on Acknowledge (40 Pin DIP
and 44 Pin PLCC Packages Only)
June 2006
D Programmable Interrupt Daisy Chain D 8 General Purpose Outputs (40 Pin DIP and 44 Pin
PLCC P
XR88C681 Datasheet
