DESCRIPTION

The Ei16C552 is an enhanced dual channel version of the Ei16C550 Universal Asynchronous Receiver Transmitter (UART). The device serves two serial input/output interfaces simultaneously in microcomputer or microprocessor based systems. Each channel performs a serial-to-parallel conversion on data characters received from peripheral devices or modems, and a parallel-to-serial conversion on data characters transmitted by the CPU.

FEATURES

• IBM PC AT™ and PS/2™ compatible

• Dual channel version of Ei16C550 with Centronics printer interface

• Independent control of transmit, receive, line status and data set interrupts on each channel

• Programmable serial interface characteristics for each channel:

-5, 6, 7 or 8 bit characters

-Even, odd or no parity bit generation and dectection

-1, 1.5 or 2 stop bit generation

• Programmable baud rate generator divides CLK input by a divisor between 1 and (216 -1)

• Tri-State® TTL drive capability for bidirectional data bus and control bus on each channel

• 16 byte FIFO for receiver as well as for trans mitter.

• Advanced CMOS low power technology with single 5 volt supply