SC28C94

• New low overhead interrupt control
• All commercial parts meet industrial timing and temperatureparameters
• Four Philips Semiconductors industry-standard UARTs
• Eight byte receive FIFO and eight byte transmit FIFO for eachUART
• 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
• Baud rate for the receiver and transmitter selectable from: 23 fixed rates: 50 to 230.4K baud Non-standard rates to 1.0Mbaud User-definedratesfromthe programmable counter/timerassociated with each of two blocks External 1x or 16x clock
• Parity, framing, and overrun error detection
• False start bit detection
• Line break detection and generation
• Programmable channel mode Normal (full-duplex), automatic echo, local loop back, remoteloopback
• Programmable interrupt priorities
• Identification of highest priority interrupt
• Global interrupt register set provides data from interruptingchannel
• Vectored interrupts with programmable vector format
• IACKN and programmable DTACKN signals
• Built-in baud rate generator with choice of 18 rates
• Four I/O pins per UART for modem controls, clocks, etc.
• Power down mode
• High-speed CMOS technology
• 52-pin PLCC and 48-pin DIP
• Commercial and industrial temperature ranges available
• On-chip crystal oscillator
• TTL compatible
• Single +5V power supply with low power mode
• Two multifunction programmable 16-bit counter/timers
• 1MHz 16x mode operation
• 10ns data bus release time
• "Watch Dog" timer for each receiver