SC16C550BIA44

5 V ， 3.3 V和2.5 V UART，具有16字节FIFO 5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs

The is an Universal Asynchronous Receiver and Transmitter UART used for serial data communications. Its principal function is to convert parallel data into serial data and vice versa. The UART can handle serial data rates up to 3Mbps. The SC16C550B is pin compatible with the ST16C550, TL16C550 and PC16C550 and it will power-up to be functionally equivalent to the 16C450. It also provides DMA mode data transfers through FIFO trigger levels and the TXRDY and RXRDY signals. On-board status registers provide the user with error indications, operational status and modem interface control. System interrupts may be tailored to meet user requirements. An internal loopback capability allows on-board diagnostics.

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Capable of running with all existing generic 16C450 software

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Industrial temperature range operation

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16-byte Transmit FIFO

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16-byte receive FIFO with error flags

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Programmable Auto-RTS\ and Auto-CTS\

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Auto-CTS\ mode, CTS\ controls transmitter

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Auto-RTS mode, RX FIFO contents and threshold control RTS

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Automatic hardware flow control

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Software selectable baud rate generator

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Four selectable receive FIFO interrupt trigger levels

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Standard modem interface

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Standard asynchronous error and framing bits

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Independent Receiver Clock Input

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Transmit, receive, line status and data set interrupts independently controlled

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False start-bit detection

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Complete status reporting capabilities

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3-state Output TTL drive capabilities for bidirectional data bus and control bus

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Line break detection and generation

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Loopback controls for communications link fault isolation

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Prioritized interrupt system controls