NXP PC-bus User Manual

1 NXP - I2C-bus solutions

NXP - I2C-bus solutions 2

MasterWrite data Slave

SDA

SCL

transmitter

PWS dataslave address data AA A

receiver

SDA

SCL

transmitter

receiver

Read data

PRS dataslave address data AA A

< n data bytes >

last data byte

S = Start condition R/W = read/write

A = Acknowledge A = Not acknowledge

The master always sends the clock

< n data >
bytes

I2C-bus: The serial revolution

By replacing complex parallel interfaces with a straightforward yet powerful serial
structure, the I2C-bus revolutionized chip-to-chip communications.

Invented by NXP (Philips) more than 20 years ago, the I2C-bus uses a simple two-wire
format to carry data one bit at a time. It performs inter-chip addressing, selection,
control, and data transfer. Speeds are up to 400 kHz, 1 MHz (Fast-mode Plus), or 3.4
MHz (High Speed mode).

The I2C-bus shrinks the IC footprint and leads to lower IC costs. Plus, since far fewer
copper traces are needed, it enables a smaller PCB, reduces design complexity, and
lowers system cost.

Smart, simple solutions for the
10 most common design concerns

NXP I2C-bus solutions

© 2009 NXP B.V.

All rights res erved. Reprodu ction in whole or in pa rt is pr ohibited withou t th e pri or w ritten consen t of the

copyr ight owner. The inform ation pres ented in t his docum ent does n ot form pa rt of any quotation or contr act,

is believed to b e accu rate an d relia ble and may be c hanged without notice. No liability will be ac cepted by

the p ublisher for any c onsequenc e of it s use. Pu blication thereof d oes not convey nor imply a ny license under

patent- o r other indus trial or intell ectual prop erty righ ts.

www.nxp.com

Date of rel ease: Februar y 2009

Docum ent order numb er: 9397 750 166 60

Printe d in the Netherl ands

SDA

SCL

uC

A

0

A

1

1010A2A1A0R/W

A

2

New function address

1010011 R/W

New function address

as assigned

New

function

MCUMCU RTCLCDI/O

A/D
D/A

I2C-bus devices are available in a wide range of functions. Each slave device has its own I2C-bus address, selectable using
address pins set high (1) or low (0). Information is transmitted byte by byte, and each byte is acknowledged by the receiver.
There can be multiple devices on the same bus, and more than one IC can act as master. The master role is typically played by a
microcontroller.

Our I2C-bus website (www.nxp.com/
i2c) is a valuable resource for device
information and training programs.
It gives you direct access to a
comprehensive handbook, application
notes, information about evaluation
kits and training materials, links to
application and design support, and
more.
The I2C 2005-1 evaluation board and
daughter cards make it easy to program
new peripherals and are a quick way to
learn about the I2C-bus protocol.

OM6275 I2C 2005-1 evaluation board with OM62 93

PCA9600 Fm+ 1-MHz bus buffer daughter card

OM6281 PCA9698 Fm+ 40-bit GPIO daughter

card with PCA9530 2-bit LED dimmer

OM6290 LCD driver evaluation board :

PCF8576D, PCF2119, PCF8531, PCA9633

Parallel Inter face I

2

C Serial Interface

4 NXP - I2C-bus solutions

NXP - I2C-bus solutions 5

6 NXP - I2C-bus solutions

NXP’s I2C peripherals portfolio is grouped into ten families, one for each of the most common, everyday design concerns.

General Purpose Input Output

(GPIO) expanders

Add different types

of inputs and outputs

Sensors and voltage
management

Digital temperature information

Clocks / RTCs

Digital time and/or calendar

Blinkers, dimmers, drivers

For complete LED control including
LCD backlighting

I

2

C-controlled Dip Switches

EEROMs / RAM combined with
General Purpose Outputs

Black and white LCD display drivers

Monochrome, character, shapes, dots

Tiny serial ADCs / DACs

Analog control and audio

Bus buffers and

voltage translators

Extenders, hubs, and repeaters

to support extra devices, longer

distances, bus-voltage translation,

or hazardous conditions

Bridge ICs,

bus controllers

Add extra, fully

featured I

2

C masters

More information

www.nxp.com/i2clogic

I2C bus product summary

Hot product

The PCA9574 is a must-have for mobile applications that need
more I/O. It’s an 8-bit GPIO that has two VDDs for level shifting
between 1.1 and 3.6 V, a selectable pull-up/pull-down resistor,
outputs configurable as totem pole or open drain, and inputs
with bus hold.

Hot product

PCF2128 brings you accurate time or timing control
(± 0.3s/day) over a large temperature range (-20 to +70 °C).

Hot products

The PCA9507 translates 5 V to 3.3 V, has a rise-time accelerator
supporting 1500 pF, and is perfect for HDMI DDC connections
on DVDs and STRs. The PCA9665 Fast-mode Plus bus controller
has a 68-byte buffer, so it greatly reduces microcontroller
loading.

Temp sensors

Local

LM75A I

2

C local ± 2 ° C temperature sensor

LM75B I

2

C local ± 2 ° C temperature sensor wit h SMBus time- out

SE95 I

2

C local ± 1 ° C temperature sensor

SE98 I

2

C local ± 2 ° C temperature sensor DIMM (3.0 - 3.6 V)

SE98A I

2

C local ± 1 ° C temperature sensor DIMM (1.7 - 3.6 V )

Local a nd EEPROM SE97

I

2

C local ± 1 ° C temperature sensor + SPD DIMM (3.0

- 3.6 V)

Local a nd remote

NE1 617A I

2

C local ± 2 ° C and remote ± 3 °C temperature sensor

SA56004 I

2

C local ± 2 ° C and remote ± 1 °C temperature sensor

Local, remote, and
voltage monitor

NE1 619

I

2

C local ± 2 ° C and remote ± 3 °C temperature sensor
with
voltage monitor (12, 5, 3.3, and 2.5 V, V

CC P,

and VDD)

LED
controllers

Dimmer
(2 PWM,
25 mA /
5 V)

PCA9530 2-bit I

2

C Fast Mo de ope n-drain LED with di mmer and reset

PCA9531 8-bit I

2

C Fast Mo de ope n-drain LED with di mmer and reset

PCA9532

16-bit I

2

C Fast Mo de ope n-drain LED with di mmer and

reset

PCA9533 4- bit I

2

C Fast Mo de ope n-drain LED with di mmer

Blinker PCA99 01

1-bit 1 LED low power current source bli nker with three
sequential P WM cycles

Blinker
(2 PWM,
25 mA /
5 V)

PCA955 0 2-bit I

2

C Fast Mo de ope n-drain LED with blinker an d reset

PC A9551 8-bit I

2

C Fast Mo de ope n-drain LED with blinker an d reset

PCA9552 16-bit I2C Fast Mo de ope n-drain LED with blinker an d reset

PCA9553 4- bit I2C Fast Mo de ope n-drain LED with blinker

8-segment SA A106 4

16-bit I2C Standard Mod e curr ent source/sink 4x8- segment
LED display

Controller
(PWM / Ch,
25 mA /
5 V)

PCA9632

4-bit I2C Fast-mode Plus low- power totem-pole L ED
controller

PCA9633

4-bit I2C Fast-mode Plus totem -pole LED controller with
output enable

PCA9634

8-bit I2C Fast-mode Plus totem -pole LED controller with
output enable

PCA9635

16-bit I2C Fast-mode Plus totem -pole LED controller with
output enable

PCA9685

16-bit I2C Fast-mode Plus totem -pole LED controller with
12-bit PWMs and out put enable

Controller
(PWM / Ch,
100 mA /
40 V)

PCA9624

8-bit I

2

C Fast-mode Plus totem -pole LED high-voltage/

current cont roller with output e nable

PCA962 2

16-bit I

2

C Fast-mode Plus totem -pole LED high-voltage/

current cont roller with output e nable

PCA9626

24-bit I

2

C Fast-mode Plus totem -pole LED high-voltage/

current cont roller with output e nable

LED Flash

SLL3250AHN 500 mA sink dual LED Flas h with torch mo de

SLL3252UK 500 mA source dual LED Flash with torch mode

Real-time clocks

Low-power

PCA8802 RTC for lowe st power applications, smart c ards

PCF8563 Ultra l ow-p ower clock /calendar

PCF8564 Ultra l ow-p ower clock /calendar, COB

Normal

PCA8565 Automotive cloc k/calendar

PCF8583 Clock/calend ar with 256x8 SR AM

PCF8593 Low-power clock /calen dar

Temp-compensated

PCF2127 High accurac y, low voltage, 512x8 RAM

PCF2128 High accurac y, power management, 512x8 RAM

PCF212 9 High accuracy RTC

Muxes and
switches

2-channel

PCA9540B 2-channel I

2

C mux

PCA9542A 2-channel I

2

C mux wit h inter rupt

PCA9543A 2-channel I

2

C switc h with interr upt and reset

2-to-1 demux

PCA9541/01 2:1 I

2

C demux with interrupt and reset (channel 0 d efault)

PCA9541/03 2:1 I

2

C demux with interrupt and reset

4-channel

PCA9544A 4-channel I

2

C mux wit h inter rupt

PCA9545A 4-channel I

2

C switc h with interr upt and reset

PCA9546A 4-channel I

2

C switc h with reset

8-channel

PCA9547 8-channel I

2

C mux wit h reset (channel 0 default)

PCA9548A 8-channel I

2

C switc h with reset

Cross b us swi tch

PCA9549 8-bit I2C switc h (CBT) w ith reset

Bus buffer s

Hot-sw ap

PC A9510A Fast Mode hot-swap I

2

C/SMBus bus buffer

PC A9 511A Fast Mode hot- swap I

2

C/SMBus bus buffer

PC A9512A Fast Mode shift I

2

C/SMBus bus buffer

PC A9513A Fast Mode hot-swap I

2

C/SMBus bus buffer

PC A9514A Fast Mode hot-swap I

2

C/SMBus bus buffer

Long-dis tance bus

P82 B715 Fast Mode I

2

C bus extender (no static of fset)

P82B845 Fast M ode differential bus buf fer

P82B846 Fast M ode differential bus buf fer and interr upt

P82B96 Fast Mode dual bidirec tional bus buffer

PCA9600 Fast-mo de Plus d ual bidirec tional bus buffer

Static -of fset
(1 side)

PCA9507 Fast Mode shif t DDC bu ffer with acceler ator

PCA9508 Fast Mode shif t hot-s wap I

2

C bus rep eater

PCA9509 Fast Mode shif t bus bu ffer with current source

PC A9517A Fas t Mode shift I

2

C bus rep eater

PC A9519 4-channel version of PCA9509

Static-offset
(All si des)

PC A9515/
15A

Fast Mo de I

2

C bus rep eater

PC A9516/
16A

Fast Mo de 5- channel I

2

C hub

PC A9518A Fast Mode expandab le 5-chann el I

2

C hub

Voltage translator
(doesn’t isolate
capacitance)

GTL2000 Fast-mode Plus 22-bit voltage clamp tr anslator

GTL2002 Fast- mode Plus 2-bit voltage clamp translator

GTL2003 Fast- mode Plus 8- bit vol tage clamp tr anslator

GTL2010 Fast-m ode Plu s 10-bit voltage clamp translato r

PCA9306 Fast-mo de Plus d ual I

2

C/SMBus voltage tra nslator

Bridge
and bus
controllers

Bridge SC16IS740 I2C/SPI-to-UART bridge with IRDA

SC16IS750 I

2

C/SPI-to-UART bridge with IRDA and GPIO

SC16IS752 I

2

C/SPI-to-DUART bridge with IRDA and GPIO

SC16IS760 I

2

C/SPI-to-UART bridge with IRDA and GPIO

SC16IS762 I

2

C/SPI-to-DUART bridge with IRDA and GPIO

SC16IS850 1.8-V I

2

C/SPI-to-UART bridge

SC16IS850L 1.8-V I

2

C/SPI-to-UART bridge

SC16 IS852 1.8-V I

2

C/SPI-to-UART bridge

SC16 IS852 L 1.8-V I

2

C/SPI-to-UART bridge

SC18IM700 UART-to- I

2

C-mas ter br idge with GPIO

SC18IS6 00 SPI-to-I

2

C-mas ter br idge, 4 M / GPIO

SC18IS6 01 SPI-to-I

2

C-mas ter br idge, 4 M / GPIO

SC18IS6 02 I

2

C-slave-to -SPI mas ter br idge

SC18IS6 03 I

2

C-to-SPI bridge, external clock

Controller PCA9665 Fast-mode Plus I

2

C-bus controller wi th 68-byte buffer

PCF8584 100 -kHz I

2

C-bus controller

PCA9564 400- kHz I

2

C-bus controller

EEPROMs

16- kbit PCF 85116 2048x8 EEPROM I2C-bus

1-kb it PCA8581 128x8-bit EEPROM I

2

C-bus

PCA85 81C 128x8-bit EEPROM I

2

C-bus (5-V only)

2-kbit PCF8 5102C 256x8-bit EEPROM I

2

C-bus

PCF85103C 256x8-bit EEPROM I

2

C-bus (ALT address)

PCF8582C 256x8 EEPRO M I

2

C-bus

PCF8570 256x8- bit RAM I

2

C-bus

4-kbit PCF8594C 512x8 EEPROM I

2

C-bus

8-kbit PCA24S0 8

1024x8 EEPROM I2C with access protec tion

PCF8598C 1024x8 EEPROM I2C-bus

Dip switch PCA8550 4-bit 1-of-2 I

2

C mux

PCA9558 5-bit MP/1-bit latch - 6-bit I

2

C EEPROM

PCA9559 5-bit mux/1-bit latch - 6- bit I

2

C EEPROM

PCA9560 2x5-b it mux /1-bit latch - 6-bit I

2

C EEPROM

PC A95 61 4x6- bit mux - 6-bit I

2

C EEPROM

A/D -D/A
converters

8-bit ADC

PCA9691 Fas t-mod e Plus AD C/DAC I

2

C

PCF8591 Fast Mode ADC/DAC I

2

C

Demo bo ards

e-Tools

OM6270 SPI/I

2

C-to- UART bridge demo (SC16IS750 )

OM6271 SPI-to-I

2

C-mas ter br idge demo (SC18IS6 00)

OM6272 UART-t o-I

2

C-mas ter br idge demo (SC18IM700)

OM6273 SPI/I

2

C-to- DUART/IrDA/GPIO (SC16IS752)

OM6274 I

2

C-to-SPI-master bridg e demo (SC18IS602)

OM6275 I2C 2005-1 evaluation b oard

OM6276 PCA9633 demo board

OM6277 PCA9564 evaluation board

OM6278 I2C 2002-1A evaluation board

OM6279 LED dimmer demo board

OM6280 PCA9665 evaluation bo ard (I

2

C Master)

OM6281 PCA9698 daughter card for I2C 2005-1

OM6282 PCA9633 daughter card for I2C 20 05-1

OM6283 SE97 daughter card for I2C 2005 -1

OM6285 I2C 2002-1A evaluation board w ithout PC controlle r board

OM6290

LCD driver evaluation board: PCF8576D, PCF2119, PCF8531, PCA9633

OM6293 PCA960 0 daughter card for I2C 2005 -1

OM6294 PCA950 8 daughter card for I2C 20 05-1

OM6295 PCA9507 daughter card for I2C 2005-1

OM6297 PCF2123 RTC Demoboard

OM6298 Mobile demo daughter card for I2C 2005-1

OM6299 Industrial demo b oard with P82B486

Multiplexers and switches

Add advanced I2C networking
to allow more devices, backup,
hot-swap

LCD drivers

Character d river

PCF2113 2 line 12 char. 120 icons

PCF2116 2 line 24 or 4 line 12

PCF2119 2 line 16 char. 160 icons

Graphic driver

PCF8531 34x128 -pixel

PCF8535 65x133 -pi xel

PCF8578 Dot-matrix LCD driver (row/column)

PCF8579 Dot-matrix LCD driver (column)

PCF8811 80x128-pixel

Segme nt driver

PCF8532 640-segment, COG

PCF8533 320-segment, COG

PCF85133 320 -segment, COG

PCF8534A 240-segment

PCF8576D 160-segment

PCF8562 128-segment

PCF8566 96-segment

PCF8577C 64 -segment

GPIO

4-bit

GPIO

PCA9536 4 -bit I

2

C Fast Mo de totem-pole GPIO with pull-up resistor

PCA9537 4-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and reset

8-bit

GPIO

PC A85 74

8-bit I

2

C Fast Mo de quasi-bidirectional GPIO with interrupt and

pull- up resistor s

PCA8574A

8-bit I

2

C Fast Mo de quasi-bidirectional GPIO with interrupt and

pull- up resistor s (ALT add ress)

PCA9500

8-bit I

2

C Fast Mo de quasi-bidirectional GPIO with pull-up resistors

and 2-K EEPROM

PCA9501

8-bit I

2

C Fast Mo de quasi-bidirectional GPIO with interrupt,

pull- up resistor s and 2-K EEPROM

PCA9502 8 -bit I

2

C /SPI Fast Mode totem-pole GPIO with interr upt and r eset

PCA9534 8 -bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt

PCA9538 8 -bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and reset

PCA9554

8-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and pull-up

resistors

PCA9554A

8-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and pull-up

resis tors ( ALT address)

PCA9557 8-bit I

2

C Fast Mo de totem-pole GPIO with reset

PC A9574

8-bit I

2

C Fast Mo de LV totem-pole/OD GPIO with interru pt, res et,

and pull-up/pull- down resistors

PCA9670

8-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with reset and

pull- up resistor s

PCA9672

8-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with interrupt,

reset, and pull-up resistors

PC A9674

8-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with interrupt

and pull-up resistors

PCA9674A

8-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with interrupt

and pull-up resistors (ALT address)

PC F8574

8-bit I

2

C 100 kHz quasi-bidirectional GPIO with interr upt and

pull- up resistor s

PCF8574A

8-bit I

2

C 100 kHz quasi-bidirectional GPIO with interr upt and

pull- up resistor s (ALT add ress)

PCA9702 8 -bit SPI GPI interrupt with 18-V input ( AEC-Q100)

16-bit

GPIO

PCA8575

16-bit I

2

C Fast Mo de quasi-bidirectional GPIO with interrupt and

pull- up resistor s

PCA9535 16-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt

PCA9535C 16-bit I

2

C Fast Mo de ope n-drain GPI O with interr upt

PCA9539 16-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and reset

PCA9555

16-bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt and pull-up

resistors

PCA9575

16-bit I

2

C Fast Mo de LV totem-pole/OD GPIO with interru pt, res et,

and pull-up/pull- down resistors

PCA9671

16-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with reset and

pull- up resistor s

PCA9673

16-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with interrupt,

reset, and pull-up resistors

PCA9675

16-bit I

2

C Fast-mode Plus quasi-bidirec tional GPIO with interrupt

and pull-up resistors

PCF8575

16-bit I

2

C Fast Mo de quasi-bidirectional GPIO with interrupt and

pull- up resistor s

PCF8575C 16-bit I

2

C Fast Mo de ope n-drain GPI O with interr upt

PCA9701 16-bit SPI GPI inter rupt w ith 18-V input (AEC-Q100)

PCA9703 16-bit SPI GPI maskable interr upt with 18-V inp ut (AEC-Q100)

40- bit

GPIO

PCA9505

40- bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt, reset, pull -up

resis tors and output enable

PCA9506

40- bit I

2

C Fast Mo de totem-pole GPIO with inte rrupt, reset, and

output enable

PCA969 8

40- bit I

2

C Fast-mode Plus totem -pole GPIO with inter rupt, reset,

pull- up resistor s and ou tput enable