Low-power bridges for I C or SPI to NXP low-power bridges

NXP low-power bridges
SC16IS750/52/60/62
Low-power bridges for I2C or SPI to
UART or IrDA or GPIO
These compact protocol converters create seamless, low-power, low-voltage connections for the
most widely used interfaces (I2C, GPIO, IrDA, SPI, UART), making it easy to add multiple devices
to any application with I2C or SPI bus interfaces. The result is increased design flexibility with
reduced complexity, lower software overhead, and faster time-to-market.
Features
4 2.5- or 3.3-V operation with inputs
tolerant to 5 V
4 Low power consumption (<30 µA
sleep mode, <6 mA operating)
4 Selectable I2C or SPI bus interface
4 Eight GPIO pins (also configurable as
modem control)
4 High-speed (5 Mbps) 16C-corebased single/dual UARTs
4 64-byte UART FIFO depth (Tx/Rx)
4 Automatic hardware and software
UART flow controls
4 Automatic RS-485 support on each
UART port
4 Industrial temperature range (-40 to +85°C)
4 TSSOP or HVQFN package
Applications
4 Systems that need asynchronous
serial ports
4 IrDA remote controls
4 T V tuners, IP set-top boxes, PDAs,
media PCs
4 Mobile TVs and smartphones
4 Bluetooth interfaces, GPS navigation
4 Wireless LAN radios, barcode
scanners
4 Portable medical equipment
4 Industrial control, power-metering
equipment
4 E xtra serial ports for software debug
4 Switches, hubs, routers
4 Car infotainment
The NXP low-power bridges
SC16IS750/52/60/62 simplify design and
reduce system cost by making it easy to
add devices to an application.
Each IC is equipped with up to eight
GPIO, supports IrDA, and offers automatic RS-485 slave detection. A host
interface can be reduced from 15 wires
to 2 or 4, so the PCB layout is smaller
and less expensive.
When used with a microcontroller or a
CPU, the bridges provide simple, effective expansion with minimum overhead.
Functional overview
For designs using RS-485 communication, the UART features automatic
slave address detection. The RTS pin is
automatically inverted during transmission, enabling
auto-direction functions. The UART also features automatic hardware and software control, so the data
flow can be regulated to prevent data overflow or
lost data. Automatic hardware control uses RTS/CTS
pins; automatic software flow control uses programmable XON/XOFF characters (single or double).
Also, to provide maximum firmware compatibility
and reduce design time, each UART is register-compatible with industry-standard UARTs, so software
from previous designs can be ported quickly.
System
SC16IS752/762
Bridge
Remote System
UART
/
IrDA
Host
Processor
I2C
/
SPI
Master
RS232/485
Modem
Handheld
Cradle
Remote Control
I2C
/
SPI
Slave
I2C / SPI
Transceiver
(optional)
UART
/
IrDA
PDA
Cell Phone
Fan Control
Keypad
GPIOs
The IrDA interface makes wireless connectivity
possible, so the system can communicate with
PDAs, consumer remote controls, and other wireless
devices.
LEDs
SC16IS7xx usage scenarios
To increase design flexibility, each bridge offers
up to eight extra GPIO, which can be used for such
functions as controlling LEDs or fans, or detecting
push-buttons/keypads.
VDD
VDD
SC16IS750/52/60/62
SC16IS750/52/60/62
RESET
SCL
UART
Compatible
Registers
SDA
A0
Operating characteristics
Each bridge supports 2.5- to 3.3-V operation with
5-V tolerant inputs. All consume less than 30 µA in
sleep mode and less than 6 mA in operating mode.
The UART baud rate is up to 5 Mbps with a 16x
clock, and each UART has a FIFO depth of 64 bytes
(transmitter and receiver). The bridges operate at a
maximum clock frequency of 48 MHz (2.5 V) or 80
MHz (3.3-V) and throughout the industrial temperature range (-40 to +85 °C)
A1
TX
RESET
RX
SCLK
RTS
CS
CTS
SO
TX
UART
Compatible
Registers
RX
RTS
CTS
SI
I2C
SPI
GPIO [3:0]
IRQ
GPIO
Registers
VDD
GPIO [3:0]
IRQ
GPIO4/DSR
GPIO
Registers
GPIO5/DTR
GPIO6/CD
GPIO7/RI
I2C/SPI
GPIO4/DSR
GPIO5/DTR
GPIO6/CD
I2C/SPI
GPIO7/RI
VSS
XTAL1
XTAL2
VSS
XTAL1
XTAL2
SC16IS7xx block diagram
SC16IS7xx block diagram
(I2C-to-UART interface)
(SPI-to-UART interface)
VSS
Ordering information
Host interface
When operating as an I2C slave, the bridges operate
at up to 400 kbps with a choice of 16 hardware-selectable addresses. When operating as an SPI slave,
the bridges can operate at up to 15 Mbps.
Type number
SC16IS750IBS
SC16IS752IBS
For more information, please visit:
www.nxp.com/interface
For technical support, please send questions to:
[email protected]
www.nxp.com
SC16IS760IBS
SC16IS762IBS
UART
IrDA SIR
channels speed
SPI
speed up Package
to
Package dimensions
1
115 Kbps
4 Mbps
HVQFN24 4.1 x 4.1 x 1.0 mm
1
115 Kbps
4 Mbps
TSSOP24
2
115 Kbps
4 Mbps
HVQFN32 5.1 x 5.1 x 1.0 mm
2
115 Kbps
4 Mbps
TSSOP28
1
1.152
Mbps
15 Mbps
HVQFN24 4.1 x 4.1 x 1.0 mm
1
1.152
Mbps
15 Mbps
TSSOP24
2
1.152
Mbps
15 Mbps
HVQFN32 5.1 x 5.1 x 1.0 mm
7.9 x 4.5 x 1.1 mm
9.8 x 4.5 x 1.1 mm
7.9 x 4.5 x 1.1 mm
NXP Semiconductors is in the process of being established as a separate legal entity in various countries worldwide. This process will be finalized in the course of 2006.
© 2006 Koninklijke Philips Electronics N.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The
Date of release: September 2006
information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and
Document order number: 9397 750 15676
may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof
Printed in the USA
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