SC16IS741 2 Single UART with I C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support Rev. 01 29 April 2010 Product data sheet 1. General description 2 The SC16IS741 is a slave I C-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 2 conversion from I C-bus or SPI to and RS-232/RS-485 and are fully bidirectional. The SC16IS741s 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 SC16IS741 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. 2. Features 2.1 General features Single full-duplex UART 2 Selectable I C-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 detectionSC16IS741 NXP Semiconductors 2 Single UART with I C-bus/SPI interface, 64-byte FIFOs, IrDA SIR Fully programmable character formatting 5-bit, 6-bit, 7-bit or 8-bit character Even, odd, or no parity 1 1, 1 , or 2 stop bits 2 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 2.2 I C-bus features Noise filter on SCL/SDA inputs 400 kbit/s maximum speed 2 Compliant with I C-bus fast speed Slave mode only 2.3 SPI features Slave mode only SPI Mode 0 3. Applications Factory automation and process control Portable and battery operated devices Cellular data devices 4. Ordering information Table 1. Ordering information Type number Package Name Description Version SC16IS741IPW TSSOP16 plastic thin shrink small outline package 16 leads body width 4.4 mm SOT403-1 SC16IS741 1 NXP B.V. 2010. All rights reserved. Product data sheet Rev. 01 29 April 2010 2 of 52