- Single 3.3V and 5V power supply
- Eight Philips industry standard full duplex UART channels
- Sixteen byte receiver FIFOs for each UART
- Sixteen byte transmit FIFOs for each UART
- In band flow control using programmable Xon/Xoff characters
- Flow control using CTSN RTSN hardware handshaking
- Automatic address detection in multi-drop mode
- Three byte general purpose character recognition
- Fast data bus, 30 ns data bus release time, 125 ns bus cycle time
- Programmable interrupt priorities
- Automatic identification of highest priority interrupt pending
- Global interrupt and control registers ease setup and interrupt handling
- Vectored interrupts with programmable interrupt vector formats
- Interrupt vector modified with channel number
- Interrupt vector modified with channel number and channel type
- Interrupt vector not modified - IACKN and DACKN signal pins
- Watch dog timer for each receiver (64 receive clock counts)
- Programmable Data Formats:
- 5 to 8 data bits plus parity
- Odd, even force or no parity
- 1, 1.5 or 2 stop bits - Flexible baud rate selection for receivers and transmitters:
- 22 fixed rates; 50 - 230.4K baud or 100 to 460.8K baud
- Additional non–standard rates to 500K baud with internal generators
- Two reload-counters provide additional programmable baud rate generation
- External 1x or 16x clock inputs
- Simplified baud rate selection - 1 MHz 1x and 16x data rates full duplex all channels.
- Parity, framing and overrun error detection
- False start bit detection
- Line break detection and generation
- Programmable channel mode
- Normal(full duplex)
- Diagnostic modes
automatic echo
local loop back
emote loop back - Four I/O ports per UART for modem controls, clocks, RTSN, I/O etc.
- All I/O ports equipped with ”Change of State Detectors” - Two global inputs and two global outputs for general purpose I/O
- Power down mode
- On chip crystal oscillator, 2–8 MHz
- TTL input levels. Outputs switch between full VCCand VSS
- High speed CMOS technology
- 84 pin PLCC
- 100 pin LQFP
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