MICROCHIP COM78C802P

The COM78C802 Two-channel Asynchronous Receiver/ Transmitter (Dual UART) is a VLSI device for new generations of asynchronous serial communication designs and for microcomputer systems. This device performs the basic operations necessary for simultaneous reception and transmission of asynchronous messages on two independent lines.

• Two independent full duplex serial data lines
• Programmable baud rates individually selectable for each line's transmitter/receiver (50 to 19,200 baud)
• Summary registers that allow a single read to detect a data set change or to determine the cause of an interrupt on any line
• Triple buffers for each receiver
• Device scanner mechanism that reports interrupt request due to transmitter/receiver interrupts
• Independently programmable lines for interrupt-driven operation
• Modem status change detection for Data Set Ready (DSR) and Data Carrier Detect (DCD) signals
• Programmable interrupts for modem status changes
• Synchronizes critical read-only registers
• Single 5V Power Supply
• TTL Compatible
• Compatible with SMC COM78C808 OCTAL UART and COM78C804 QUART