General description

The SC16IS741A1 is a slave I2C-bus/SPI interface to a single-channel high performance

UART. It offers data rates up to 5 Mbit/s and guarantees low operating and sleeping

current. The device comes in the TSSOP16 package, which makes it ideally suitable for

handheld, battery operated applications. This device enables seamless protocol

conversion from I2C-bus or SPI to and RS-232/RS-485 and are fully bidirectional.

The SC16IS741A’s internal register set is backward-compatible with the widely used and

widely popular 16C450. This allows the software to be easily written or ported from

another platform.

The SC16IS741A also provides additional advanced features such as auto hardware and

software flow control, automatic RS-485 support, and software reset. This allows the

software to reset the UART at any moment, independent of the hardware reset signal.

Features and benefits

2.1 General features

 Single full-duplex UART

 Selectable I2C-bus or SPI interface

 3.3 V or 2.5 V operation

 Industrial temperature range: 40 C to +95 C

 64 bytes FIFO (transmitter and receiver)

 Fully compatible with industrial standard 16C450 and equivalent

 Baud rates up to 5 Mbit/s in 16 clock mode

 Auto hardware flow control using RTS/CTS

 Auto software flow control with programmable Xon/Xoff characters

 Single or double Xon/Xoff characters

 Automatic RS-485 support (automatic slave address detection)

 RS-485 driver direction control via RTS signal

 RS-485 driver direction control inversion

 Built-in IrDA encoder and decoder interface

 Software reset

 Transmitter and receiver can be enabled/disabled independent of each other

 Receive and Transmit FIFO levels

 Programmable special character detection

 Fully programmable character formatting

 5-bit, 6-bit, 7-bit or 8-bit character

 Even, odd, or no parity

 1, 11⁄2, or 2 stop bits

 Line break generation and detection

 Internal Loopback mode

 Sleep current less than 30 A at 3.3 V

 Industrial and commercial temperature ranges

 Available in the TSSOP16 package

2.2 I2C-bus features

 Noise filter on SCL/SDA inputs

 400 kbit/s maximum speed

 Compliant with I2C-bus fast speed

 Slave mode only

2.3 SPI features

 Slave mode only

SPI Mode 0

SC16IS741AIPWJ属于集成电路（IC） > UART（通用异步接收器发送器）。恩智浦半导体公司制造生产的SC16IS741AIPWJUART（通用异步接收器发送器）UART（通用异步接收器/发射器）接口是将来自微控制器或 CPU 的并行位转换为串行位以便进行传输，或将接收到的串行位转换为并行位以供其他微控制器或 CPU 使用的物理电路。UART 可以使用 RS232、RS422 或 RS485 协议进行数据传输，并根据通道数、数据速率和其他特性（例如内部振荡器、定时器、计数器、GPIO 和打印机端口）来选择。