DESCRIPTION

The Philips Semiconductors SCC2691 Universal Asynchronous Receiver/Transmitter (UART) is a single-chip CMOS-LSI communications device that provides a full- duplex asynchronous receiver/transmitter. It is fabricated with Philips Semiconductors CMOS technology which combines the benefits of high density and low power consumption.

FEATURES

• Full-duplex asynchronous receiver/transmitter
• Quadruple buffered receiver data register
• Programmable data format:
– 5 to 8 data bits plus parity
– Odd, even, no parity or force parity
– 1, 1.5 or 2 stop bits programmable in 1/16-bit increments
• 16-bit programmable Counter/Timer
• Baud rate for the receiver and transmitter selectable from:
– 22 fixed rates: 50 to 115.2K baud
– Non-standard rates to 115.2kb
– Non-standard user-defined rate derived from programmable timer/ counter
– External 1X or 16X clock
• Parity, framing, and overrun detection
• False start bit detection
• Line break detection and generation
• Programmable channel mode
– Normal (full-duplex)
– Automatic echo
– Local loopback
– Remote Loopback
• Multi-function programmable 16-bit counter/timer
• Single interrupt output with seven maskable interrupting conditions
• On-chip crystal oscillator
• Low power mode
• TTL compatible
• Single +5V power supply
• Commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature versions available
• SOL, PLCC and 300 mil wide DIP packages available