smart, simple solutions for the 12 most common design concerns nxp i 2 c-bus solutions 2h 2011
i 2 c-bus: the serial revolution by replacing complex parallel interfaces with a straightforward yet powerful serial structure, the i 2 c-bus revolutionized chip-to-chip communications. invented by nxp (philips) more than 30 years ago, the i 2 c-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 (fast-mode), 1 mhz (fast-mode plus), 3.4 mhz (high speed-mode), or 5 mhz (ultra fast-mode). the i 2 c-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. sda scl uc a 0 a 1 1010a 2 a 1 a 0 r/w a 2 new function address 1010011 r/w new function address as assigned new function mcu mcu rtc lcd i/o a/d d/a i 2 c-bus devices are available in a wide range of functions. each slave device has its own i 2 c-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. parallel interface i 2 c serial interface master write data slave sda scl transmitter p w s data slave address data a a a receiver sda scl transmitter receiver read data p r s data slave address data a a a < n data bytes > last data byte s = start condition r/w = read/write a = acknowledge a = not acknowledge p = stop condition the master always sends the clock < n data > bytes
nxps i 2 c peripherals portfolio is grouped into twelve 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 intelligent stepper motor controllers easy and versatile control capacitive sensor switch action without contact 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/interface multiplexers and switches add advanced i 2 c networking to allow more devices, backup, hot-swap
gpio expander 4-bit pca9536 4-bit i 2 c fm tp gpio with pu pca9537 4-bit i 2 c fm tp gpio with int and rst 8-bit pca8574 8-bit i 2 c fm qb gpio with int and pu pca8574a 8-bit i 2 c fm qb gpio with int and pu (alternate address) pca9500 8-bit i 2 c fm qb gpio with pu and 2-k eeprom pca9501 8-bit i 2 c fm qb gpio with int, pu and 2-k eeprom pca9502 8-bit i 2 c fm/spi tp gpio with int and rst pca9534 8-bit i 2 c fm tp gpio with int + pca9538 8-bit i 2 c fm tp gpio with int and rst + pca9554 8-bit i 2 c fm tp gpio with int and pu pca9554a 8-bit i 2 c fm tp gpio with int and pu (alternate address) pca9557 8-bit i 2 c fm tp gpio with rst pca9574 8-bit i 2 c fm lv vlt tp/od gpio with int, rst, latch and pu/pd pca9621 8-bit i 2 c fm+ 65 ma od gpo with rst pca9670 8-bit i 2 c fm+ qb gpio with rst and pu pca9672 8-bit i 2 c fm+ qb gpio with int, rst and pu pca9674 8-bit i 2 c fm+ qb gpio with int and pu pca9674a 8-bit i 2 c fm+ qb gpio with int and pu (alternate address) pcf8574 8-bit i 2 c sm qb gpio with int and pu pcf8574a 8-bit i 2 c sm qb gpio with int and pu (alternate address) 16-bit pca6416a 16-bit i 2 c fm lv vlt tp gpio with int and rst pca8575 16-bit i 2 c fm qb gpio with int and pu pca9535 16-bit i 2 c fm tp gpio with int pca9535a 16-bit i 2 c fm lv tp gpio with int pca9535c 16-bit i 2 c fm od gpio with int + pca9539 16-bit i 2 c fm tp gpio with int and rst pca9539a 16-bit i 2 c fm lv tp gpio with int and rst pca9539r 16-bit i 2 c fm tp gpio with int and rst (state machine only) pca9555 16-bit i 2 c fm tp gpio with int and pu pca9555a 16-bit i 2 c fm lv tp gpio with int and pu pca9575 16-bit i 2 c fm lv vlt tp/od gpio with int, rst, latch and pu/pd pca9671 16-bit i 2 c fm+ qb gpio with rst and pu pca9673 16-bit i 2 c fm+ qb gpio with int, rst and pu pca9675 16-bit i 2 c fm+ qb gpio with int and pu pca- l6416a 16-bit i 2 c fm lv vlt tp/od gpio with int, rst, latch and pu/pd pca- l9535a 16-bit i 2 c fm lv tp/od gpio with int, latch and pu/pd pca- l9539a 16-bit i 2 c fm lv tp/od gpio with int, rst, latch and pu/pd pca- l9555a 16-bit i 2 c fm lv tp/od gpio with int, latch and pu/pd (pu default) pcf8575 16-bit i 2 c fm qb gpio with int and pu pcf8575c 16-bit i 2 c fm od gpio with int 40-bit pca9505 40-bit i 2 c fm tp gpio with int, rst, oe and pu pca9506 40-bit i 2 c fm tp gpio with int, rst and oe pca9698 40-bit i 2 c fm+ tp/od gpio with int, rst, oe and pu i 2 c-bus product summary capacitive sensor 8-channel touch switch + pca/pcf8885 i 2 c fm touch / proximity sensor for up to 28 keys stepper motor controller 1 motor controller pca9629 i 2 c fm+ stepper motor controller with tp gpio with int and rst temp sensors local lm75a i 2 c fm ts local with 2 c accuracy lm75b i 2 c fm ts local with 2 c accuracy and smbus time-out se95 i 2 c fm ts local with 1 c accuracy se98a i 2 c fm ddr ts local with 1 c accuracy and smbus time-out local and eep- rom se97b i 2 c fm ddr ts local with 1 c accuracy, 2k spd and smbus time-out local and remote ne1617a i 2 c fm ts local with 2 c accuracy and remote with 3 c accuracy sa56004 i 2 c fm ts local with 2 c accuracy and remote with 1 c accuracy local, remote, and voltage monitor ne1619 i 2 c fm ts local with 2 c accuracy and remote with 3 c accuracy with voltage monitor w(12, 5, 3.3, and 2.5 v, v ccp , and v dd ) led controllers dimmer (2 pwm, 25 ma / 5 v) pca9530 2-channel i 2 c fm od led dimmer with rst pca9531 8-channel i 2 c fm od led dimmer with rst pca9532 16-channel i 2 c fm od led dimmer with rst pca9533 4-channel i 2 c fm od led dimmer blinker (2 pwm, 25 ma / 5 v) pca9550 2-channel i 2 c fm od led blinker with rst pca9551 8-channel i 2 c fm od led blinker with rst pca9552 16-channel i 2 c fm od led blinker with rst pca9553 4-channel i 2 c fm od led blinker 8-segment SAA1064 16-channel i 2 c sm current source/sink 4x8- segment led display controller (pwm / ch, 25 ma / 5 v) pca9632 4-channel i 2 c fm+ low-power tp led controller pca9633 4-channel i 2 c fm+ tp led controller with oe pca9634 8-channel i 2 c fm+ tp led controller with oe + pca9635 16-channel i 2 c fm+ tp led controller with oe + pca9685 16-channel i 2 c fm+ tp led controller with 12-bit pwms and oe controller (pwm / ch, 57 ma / 40 v) pca9952 16-channel i 2 c fm+ hv cs led controller with oe pca9955 16-channel i 2 c fm+ hv cs led controller pcu9955 16-channel i 2 c ufm hv cs led controller controller (pwm / ch, 100 ma / 40 v) pca9624 8-channel i 2 c fm+ hv od led controller with oe pca9622 16-channel i 2 c fm+ hv od led controller with oe pca9626 24-channel i 2 c fm+ hv od led controller with oe pcu9654 8-channel i 2 c ufm hv od led controller with oe pcu9655 16-channel i 2 c ufm hv od led controller pcu9656 24-channel i 2 c ufm hv od led controller with oe led fash ssl3250a i 2 c fm 500 ma sink dual led fash with torch mode ssl3252 i 2 c fm 500 ma source dual led fash with torch mode
real-time clocks low-power pca8802 i 2 c fm rtc for one time password genera - tion and smart cards pcf8523 i 2 c fm+ ultra low-power rtc with loss of main power detect and auto battery switch over pcf8563 i 2 c fm ultra low-power clock/calendar pcf8564a i 2 c fm ultra low-power clock/calendar and cob normal + pca8565 i 2 c fm high temperature clock/calendar -40c+125c pcf8583 i 2 c sm clock/calendar resolution: 0.01 s, with 256x8 sram pcf8593 i 2 c sm low-power clock/calendar resolution: 0.01 s temp-compen - sated pcf2127a i 2 c fm high-accuracy, low-voltage rtc with 512x8 ram + pca/pcf2129(a) i 2 c fm high-accuracy rtc decode table bus speed features sm 100 khz standard-mode i 2 c-bus lv supply voltage <2.3 v fm 400 khz fast-mode i 2 c-bus tp totem-pole (push-pull) fm+ 1 mhz fast-mode plus i 2 c-bus qb quasi-bidirectional hsm 3.4 mhz high speed-mode i 2 c-bus od open drain ufm 5 mhz ultra fast-mode i 2 c-bus cs current source int interrupt + aec-q100 compliance rst reset gpio general purpose i/o expander oe output enable ts thermal sensor latch input latch rtc real time clock pu pull-up resistors lcd liquid crystal display pu/pd pull-up/pull-down resistors dac digital analog converter hv outputs >10 v adc analog digital converter vlt voltage level translator C 2 supplies cog chip on glass muxes and switches 2-channel pca9540b 2-channel i 2 c fm mux pca9542a 2-channel i 2 c fm mux with int pca9543a/b/c 2-channel i 2 c fm switch with int and rst (b and c alternate address) 2-to-1 demux pca9541a/01 ?? 2 to 1 i 2 c fm demux with int and rst (channel 0 default) pca9541a/03 ?? 2 to 1 i 2 c fm demux with int and rst (no channel default) 4-channel pca9544a 4-channel i 2 c fm mux with int pca9545a/b/c 4-channel i 2 c fm switch with int and rst (b and c alternate address) pca9546a 4-channel i2c fm switch with rst pca9646 4-channel i 2 c fm+ no offset buffer/switch with rst 8-channel pca9547 8-channel i 2 c fm mux with rst (channel 0 default) pca9548a 8-channel i 2 c fm switch with rst bus buffers incremental offset pca9510a i 2 c fm incremental offset hot-swap bus buffer (no rta) pca9511a i 2 c fm incremental offset hot swap-bus buffer pca9512b i 2 c fm incremental offset vlt hot swap bus buffer pca9513a i 2 c fm incremental offset hot-swap bus buffer (92 a cs) pca9514a i 2 c fm incremental offset hot-swap bus buffer (0.8 v offset) pca9521 i 2 c fm (1 mhz) hv incremental offset bus buffer pca9522 i 2 c fm (1 mhz) hv incremental offset hot-swap bus buffer amplifer p82b715 i 2 c fm hv bus extender no offset pca9525 i 2 c fm (1 mhz) no offset bus repeater pca9605 i 2 c fm+ no offset bus repeater static offset (1 side) p82b96 i 2 c fm hv bus buffer pca9507 i 2 c fm vlt ddc buffer with accelerator pca9508 i 2 c fm vlt hot-swap bus repeater pca9509 i 2 c fm 1.0v lv vlt bus buffer with current source pca9509a i 2 c fm 0.8v lv vlt bus buffer with current source pca9509p i 2 c fm 0.8v lv vlt bus buffer pca9517a i 2 c fm 0.9v lv vlt bus repeater pca9519 4-channel version of pca9509 pca9527 i 2 c fm ddc vlt buffer with accelerator and cec pca9600 i 2 c fm+ hv bus buffer pca9601 i 2 c fm+ hv bus buffer with stronger 15 ma local side drive to support multiple fm+ slaves static offset (all sides) pca9515a i 2 c fm bus repeater pca9516a i 2 c fm 5-channel hub pca9518a i 2 c fm expandable 5-channel hub voltage translator (doesnt isolate capacitance) gtl2000 22-bit i 2 c fm+ vlt gtl2002 2-bit i 2 c fm+ vlt gtl2003 8-bit i 2 c fm+ vlt gtl2010 10-bit i 2 c fm+ vlt pca9306 dual i 2 c/smbus fm+ vlt nvt2001 1-bit i 2 c fm+ vlt nvt2002 2-bit i 2 c fm+ vlt for i 2 c/smbus applications nvt2003 3-bit i 2 c fm+ vlt for two power supply applications nvt2004 4-bit i 2 c fm+ vlt for spi applications nvt2006 6-bit i 2 c fm+ vlt nvt2008 8-bit i 2 c fm+ vlt nvt2010 10-bit i 2 c fm+ vlt
lcd drivers character driver pcf2113 i 2 c fm 1/2-line, 12-character, 120-icon lcd driver pcf2116 i 2 c sm 1/2-line, 24 characters per line, or 2/4 line, 12 characters per line pcf2119 i 2 c fm 1/2-line, 16-character, 160-icon lcd driver graphic driver pcf8531 i 2 c fm 34 x 128-pixel lcd driver pcf8578 i 2 c sm dot-matrix lcd driver (row/column) pcf8579 i 2 c sm dot-matrix lcd driver (column) pcf8811 i 2 c hsm 80 x 128-pixel lcd driver segment driver pcf8577c i 2 c sm 64-segment lcd driver pcf8566 i 2 c sm 96-segment lcd driver + pca/pcf85162 ?? i 2 c fm 128-segment lcd driver + pca/pcf85176? ? i 2 c fm 160-segment lcd driver + pca/pcf85134 ?? i 2 c fm 240-segment lcd driver + pca/pcf85133 ?? i 2 c fm 320-segment, cog lcd driver + pca/pcf8536 ??? i 2 c fm 320-segment plus led backlight control pcf8578 i 2 c sm 384-segment lcd driver + pca9620 i 2 c fm 480-segment lcd driver + pca/pcf85132 ?? i 2 c fm 640-segment cog lcd driver + pca85232 ??????? i 2 c fm 640-segment cog lcd driver a/d-d/a converters 8-bit adc pcf8591 i 2 c sm 4-channel adc and 1-channel dac eeproms 2-kbit pcf85102c i 2 c sm 256 x 8-bit eeprom (no programming time control output) pcf85103c i 2 c sm 256 x 8-bit eeprom (no programming time control output with alt address) pcf8582c i 2 c sm 256 x 8 eeprom pcf8570 i 2 c sm 256 x 8-bit ram 4-kbit pcf8594c i 2 c sm 1024 x 8-bit eeprom sl3s4001 i 2 c fm 3.6k bit eeprom with dual gen2 rfid interface 8-kbit pca24s08a i 2 c fm 1024 x 8-bit eeprom with access protec - tion pcf8598c i 2 c sm 1024 x 8-bit eeprom dip switch pca8550 i 2 c fm 4-bit 1-of-2 mux & 5-bit eeprom pca9558 i 2 c fm 5-bit mp/1-bit latch & 6-bit eeprom with 2k eeprom and 8-bit gpio pca9559 i2c fm 5-bit mux/1-bit latch & 6-bit eeprom pca9560 i 2 c fm 2 x 5-bit mux/1-bit latch & 6-bit eeprom pca9561 i 2 c fm 4 x 6-bit mux & 6-bit eeprom bridge and bus controllers bridge sc16is740 i 2 c fm/spi-to-uart bridge with irda sc16ls741 i 2 c fm/spi-to-uart bridge with irda sc16is750 i 2 c fm/spi-to-uart bridge with irda and gpio sc16is752 i 2 c fm/spi-to-duart bridge with irda and gpio sc16is760 i 2 c fm/spi-to-uart bridge with irda and gpio sc16is762 i 2 c fm/spi-to-duart bridge with irda and gpio sc18im700 uart-to-i 2 c fm master bridge with gpio sc18is600 spi-to-i 2 c fm master bridge, 4 m with gpio sc18is602 i 2 c fm slave-to-spi master bridge controller pcf8584 i 2 c sm bus controller with bus snoop pca9564 i 2 c fm bus controller pca9661 1-channel i 2 c fm+ bus controller with 4 k-byte buffer pca9663 3-channel i 2 c fm+ bus controller with 4 k-byte buffer per channel pca9665 i 2 c fm+ bus controller with 68-byte buffer pca9665a i 2 c fm+ bus controller with 68-byte buffer and restart condition fx pcu9661 1-channel ufm bus controller with 4 k-byte buffer pcu9669 1-channel fm+ and 2 -channel ufm bus controller with 4 k-byte buffer per channel
our i 2 c-bus website (www.nxp.com/interface) 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 i 2 c fm+ development board and daughter cards make it easy to program new peripherals and are a quick way to learn about the i 2 c-bus protocol. om13320 fm+ demonstration kit which includes the om13260 fm+ development board with two om13303 gpio target boards and one each of the om13243 pca9555 gpio 16-bit and om13257 lm75b thermal sensor daughter boards om6275 i2c 2005-1 evaluation board om6277 pca9564 evaluation board om6293 pca9600 daughter card for i2c 2005-1 om6276 pca9633 demo board om13285 pca9629 stepper motor demonstration board om11057 pcf8885/86 touch switch with pcf8536 lcd/led driver demo boards e-tools om6270 spi/i 2 c-to-uart bridge demo (sc16is750) om6271 spi-to-i 2 c-master bridge demo (sc18is600) om6272 uart-to-i 2 c-master bridge demo (sc18im700) om6273 spi/i 2 c-to-duart/irda/gpio demo (sc16is752) om6274 i 2 c-to-spi-master bridge demo (sc18is602) om6275 i 2 c 2005-1 evaluation board om6276 pca9633 demo board om6277 pca9564 evaluation board om6278 i 2 c 2002-1a evaluation board om6281 pca9698 daughter card for i 2 c 2005-1 om6282 pca9633 daughter card for i 2 c 2005-1 om6285 i 2 c 2002-1a evaluation board without pc controller board om6290 lcd driver evaluation board: pcf8576d, pcf2119, pcf8531, pca9633 om6292 pca21125, pcf8562 demoboard om6293 pca9600 daughter card for i 2 c 2005-1 om6297 pcf2123, pcf8562 demoboard om11051 pcf2127a demo board om11057 pcf8885/86 capacitive sensor and pcf8536 lcd/led driver? om13260 i 2 c fm+ development board (rohs) om13243 pca9555 daughter card (rohs) om13243 gpio target board (rohs) om13257 lm75b daughter card (rohs) om13285 ? pca9629 demo board om13320 i 2 c fm+ development kit (rohs) om6278 i2c 2002-1a evaluation board
? 2011 nxp semiconductors n.v. all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. www.nxp.com/interface date of release: august 2011 document order number: 9397 750 17144 printed in the netherlands
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