SC16IS740/750/760

General description

The SC16IS740/750/760 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 SC16IS750 and SC16IS760 also provide the application with 8 additional programmable I/O pins. The device comes in very small HVQFN24, TSSOP24 (SC16IS750/760) and TSSOP16 (SC16IS740) packages, which makes it ideally suitable for handheld, battery operated applications. This family of products enables seamless protocol conversion from I²C-bus or SPI to and RS-232/RS-485 and are fully bidirectional.

The SC16IS760 differs from the SC16IS750 in that it supports SPI clock speeds up to 15 Mbit/s instead of the 4 Mbit/s supported by the SC16IS750, and in that it supports IrDA SIR up to 1.152 Mbit/s. In all other aspects, the SC16IS760 is functionally and electrically the same as the SC16IS750. The SC16IS740 is functionally and electrically identical to the SC16IS750, with the exception of the programmable I/O pins which are only present on the SC16IS750.

The SC16IS740/750/760'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 SC16IS740/750/760 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

General features

• Single full-duplex UART
• Selectable I²C-bus or SPI interface
• 3.3 V or 2.5 V operation
• Industrial temperature range: -40 Cel to +95 Cel
• 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)
• Up to eight programmable I/O pins (SC16IS750 and SC16IS760 only)
• RS-485 driver direction control via RTS signal
• RS-485 driver direction control inversion
• Built-in IrDA encoder and decoder interface
• SC16IS750 supports IrDA SIR with speeds up to 115.2 kbit/s
• SC16IS760 supports IrDA SIR with speeds up to 1.152 Mbit/s¹
• 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 1/2, or 2 stop bits
• Line break generation and detection
• Internal Loopback mode
• Sleep current less than 30 uA at 3.3 V
• Industrial and commercial temperature ranges
• Available in HVQFN24, TSSOP24 (SC16IS750/760) and TSSOP16 (SC16IS740) packages

I²C-bus features

• Noise filter on SCL/SDA inputs
• 400 kbit/s maximum speed
• Compliant with I²C-bus fast speed
• Slave mode only

SPI features

• SC16IS750 supports 4 Mbit/s maximum SPI clock speed
• SC16IS760 supports 15 Mbit/s maximum SPI clock speed
• Slave mode only
• SPI Mode 0

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.

Products/packages

Pricing/ordering/availability

Applications

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

Block diagrams/pinning

Technical documents

Application Notes

AN10417_1; SC16IS760/762 Fast IrDA mode (08-Jun-06)

AN10428_1; UART-SPI Gateway for Philips SPI slave bridges (06-Mar-06)

AN10452_1; Interfacing Philips Bridge IC with Philips microcontroller (17-May-06)

AN10462_1; SPI programming for Philips Bridge ICs (01-Jun-06)

AN10485_1; SDA pin connection in SPI mode (02-Jun-06)

AN10486_1; Automatic RS-485 address detection (02-Jun-06)

AN10571_1; Sleep programming for NXP bridge ICs (08-Jan-07)

AN10587_1; Interfacing NXP bridge IC with NXP ARM microcontroller (26-Feb-07)

Support Documents

75016189; NXP I (2008-06-01)

web; NXP SC16IS7xx I2C/SPI-to-UART demo board kits ()

75015676; NXP low-power bridges SC16IS750/52/60/62 (2006-09-01)

75014352; new multimarket products (2005-11-04)

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