SC16IS752 SC16IS762 2 Dual UART with I C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support Rev. 9 22 March 2012 Product data sheet 1. General description 2 The SC16IS752/SC16IS762 is an I C-bus/SPI bus interface to a dual-channel high performance UART offering data rates up to 5 Mbit/s, low operating and sleeping current it also provides the application with 8 additional programmable I/O pins. The device comes in very small HVQFN32 and TSSOP28 packages, which makes it ideally suitable for hand-held, battery-operated applications. This chip enables seamless protocol 2 conversion from I C-bus/SPI to RS-232/RS-485 and is fully bidirectional. The SC16IS762 differs from the SC16IS752 in that it supports SPI clock speeds up to 15 Mbit/s instead of the 4 Mbit/s supported by the SC16IS752, and in that it supports IrDA SIR up to 1.152 Mbit/s. In all other aspects, the SC16IS762 is functionally and electrically the same as the SC16IS752. The SC16IS752/SC16IS762s 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 SC16IS752/SC16IS762 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 and benefits 2.1 General features Dual full-duplex UART 2 I C-bus or SPI interface selectable 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) Up to eight programmable I/O pins RS-485 driver direction control via RTS signalSC16IS752 SC16IS762 NXP Semiconductors 2 Dual UART with I C-bus/SPI interface, 64-byte FIFOs, IrDA SIR RS-485 driver direction control inversion Built-in IrDA encoder and decoder supporting IrDA SIR with speeds up to 115.2 kbit/s 1 SC16IS762 supports IrDA SIR with speeds up to 1.152 Mbit/s 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, 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 5 V tolerant inputs Available in HVQFN32 and TSSOP28 packages 2 2.2 I C-bus features Noise filter on SCL/SDA inputs 400 kbit/s (maximum) 2 Compliant with I C-bus Fast mode Slave mode only 2.3 SPI features SC16IS752 supports 4 Mbit/s maximum SPI clock speed SC16IS762 supports 15 Mbit/s maximum SPI clock speed Slave mode only SPI Mode 0 3. Applications Factory automation and process control Portable and battery operated devices Cellular data devices 1. Please note that IrDA SIR at 1.152 Mbit/s is not compatible with IrDA MIR at that speed. Please refer to application notes for usage of IrDA SIR at 1.152 Mbit/s. SC16IS752 SC16IS762 All information provided in this document is subject to legal disclaimers. NXP B.V. 2012. All rights reserved. Product data sheet Rev. 9 22 March 2012 2 of 60