SC16C550B

更新时间： 2024-10-02 22:50:19

品牌	Logo	应用领域
恩智浦 - NXP		先进先出芯片
页数	文件大小	规格书
47页	222K
描述
5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs

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SC16C550B 数据手册

SC16C550B

5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs

Rev. 02 — 14 December 2004

Product data

1. General description

The SC16C550B is a 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 3 Mbit/s.

The SC16C550B is pin compatible with the ST16C550, TL16C550 and PC16C550,

and it will power-up to be functionally equivalent to the 16C450. The SC16C550B

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 loop-back capability allows on-board

diagnostics.

The SC16C550B operates at 5 V, 3.3 V and 2.5 V, and the Industrial temperature

range, and is available in plastic DIP40, PLCC44 and LQFP48 packages.

2. Features

■ 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 Mbit/s transmit/receive operation at 5 V, 2 Mbit/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 hardware ﬂow control

■ Software selectable Baud Rate Generator

■ Four selectable Receive FIFO interrupt trigger levels

■ Standard modem interface

■ 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:

12 3 4 5 6 7...47

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