描述 Description

The SC16IS741A is a slave I2C-bus/SPI interface to a single-channel high performanceUART. It offers data rates up to 5 Mbit/s and guarantees low operating and sleepingcurrent. The device comes in the TSSOP16 package, which makes it ideally suitable forhandheld, battery operated applications. This device enables seamless protocolconversion 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 andwidely popular 16C450. This allows the software to be easily written or ported fromanother platform.
The SC16IS741A also provides additional advanced features such as auto hardware andsoftware flow control, automatic RS-485 support, and software reset. This allows thesoftware to reset the UART at any moment, independent of the hardware reset signal.

特性 Features

General featuresSingle 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 16x 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, 1?, or 2 stop bits
Line break generation and detection
Internal Loopback mode
Sleep current less than 30 μA at 3.3 V
Industrial and commercial temperature ranges
Available in the TSSOP16 package
I2C-bus featuresNoise filter on SCL/SDA inputs
400 kbit/s maximum speed
Compliant with I2C-bus fast speed
Slave mode only
SPI featuresSlave mode only
SPI Mode 0

應(yīng)用 Application

Factory automation and process control
Portable and battery operated devices
Cellular data devices