Datasheet Summary
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APRIL 2002
3.3V AND 5V DUART WITH 128-BYTE FIFO
REV. 2.0.0
GENERAL DESCRIPTION
The XR16C28521 (2852) is a dual universal asynchronous receiver and transmitter (UART). The device operates at 3.3V and 5V and is pin-to-pin patible to Exar’s ST16C2552 and XR16L2752. The 2852 register set is patible to the ST16C2552 and the XR16C2752 enhanced Features
. It supports the Exar’s enhanced Features of 128 bytes of TX and RX FIFOs, programmable FIFO trigger level and FIFO level counters, automatic hardware (RTS/CTS) and software flow control, automatic RS-485 half duplex direction control output and a plete modem interface. Onboard registers provide the user with operational...