SC16IS752/SC16IS762

General description

The SC16IS752/SC16IS762 is an I²C-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 conversion from I²C-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/SC16IS762'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 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.

Features

General features

• Dual full-duplex UART
• I²C-bus or SPI interface selectable
• 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
• RS-485 driver direction control via RTS signal
• RS-485 driver direction control inversion
• Built-in IrDA encoder and decoder supporting IrDA SIR with speeds up to 115.2 kbit/s
• SC16IS762 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
• 5 V tolerant inputs
• Available in HVQFN32 and TSSOP28 packages

I²C-bus features

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

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

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

Quality/reliability/chemical content

Quality and reliability disclaimer

Pricing/ordering/availability

Applications

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

Block diagrams/pinning

Design support

Application Notes

AN10486_1; Automatic RS-485 address detection (2006-06-02)

AN10587_1; Interfacing NXP bridge IC with NXP ARM microcontroller (2007-02-26)

AN10417_1; SC16IS760/762 Fast IrDA mode (2006-06-08)

AN10485_1; SDA pin connection in SPI mode (2006-06-02)

AN10462_1; SPI programming for Philips Bridge ICs (2006-06-01)

AN10571_1; Sleep programming for NXP bridge ICs (2007-01-08)

AN10428_1; UART-SPI Gateway for Philips SPI slave bridges (2006-03-06)

Support Documents

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

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

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Disclaimers

• General product disclaimer
• Quality and reliability disclaimer