- 5 V, 3.3 V and 2.5 V operation
- Industrial temperature range
- After reset, all registers are identical to the typical 16C450 register set
- Capable of running with all existing generic 16C450 software
- Pin compatibility with the industry-standard ST16C450/550, TL16C450/550, PC16C450/550
- Up to 3 Mbits/s transmit/receive operation at 5 V, 2 Mbits/s at 3.3 V, and 1 Mbit/s at 2.5 V
- 16 byte transmit FIFO
- 16 byte receive FIFO with error flags
- Programmable auto-RTS and auto-CTS
- In auto-CTS mode, CTS controls transmitter
- In auto-RTS mode, RxFIFO contents and threshold control RTS
- Automatic software/hardware flow control
- Programmable Xon/Xoff characters
- Software selectable Baud Rate Generator
- Four selectable Receive FIFO interrupt trigger levels
- Standard modem interface or infrared IrDA encoder/decoder interface
- Sleep mode
- Standard asynchronous error and framing bits (Start, Stop, and Parity Overrun Break)
- Independent receiver clock input
- Transmit, Receive, Line Status, and Data Set interrupts independently controlled
- Fully programmable character formatting:
- 5-, 6-, 7-, or 8-bit characters
- Even-, Odd-, or No-Parity formats
- 1-, 1 1/2 -, or 2-stop bit
- Baud generation (DC to 3 Mbit/s)
- False start-bit detection
- Complete status reporting capabilities
- 3-State output TTL drive capabilities for bi-directional data bus and control bus
- Line Break generation and detection
- Internal diagnostic capabilities:
- Loop-back controls for communications link fault isolation
- Prioritized interrupt system controls
- Modem control functions (CTS, RTS, DSR, DTR, RI, DCD).
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