DESCRIPTION

The ST16C2552 is a dual asynchronous receiver and transmitter with 16 byte transmit and receive FIFOs. Independent programmable baud rate generators are provided to select transmit and receive clock rates from 50Hz to 1.5 MHz for each UART.

FEATURES

• Pin to pin and functional compatible to National NS16C552

• 16 byte transmit FIFO

• 16 byte receive FIFO with error flags

• Modem control signals (CTS*, RTS*, DSR*, DTR*, RI*, CD*)

• Programmable character lengths (5, 6, 7, 8) bits

• Even, odd, or no parity bit generation and detection

• Status report register

• TTL compatible inputs, outputs

• Independent transmit and receive control

• Software compatible with INS8250, NS16C550

• 460.8 kHz transmit/receive operation with 7.372 MHz crystal or external clock source