I2C-bus Protocol & Applications pp SASE, March 2010
Contents
1.2. 83 Interface Products Internet Support General http www nxp com support IC Control http www nxp com i2c I2C Support nxp com E mail Support http forums nxp com forums Forum All other Interface Products http www ics nxp com interface Interface Support nxp com 84 Questions
3. DDRII EOS 16 bit GPIO to turn on off 16 hard disks LEDs Y Y HDO HD7 4006 4006 Y Y HD8 HD15 400G 400G NorthBridge NB CK009 clockgen PCle PCIx Hub 24 Redundant BMC Implementation E NXP FC Solution PCA9541 selects between a primary and redundant BMC masters PCA9541 BMC PCA9508 is hot swap bus buffer without offset on A side enables each BMC card to hot swap without data corruption BMC Backup Buffer s A side Buffer s B side 25 Temperature and Fan Control in IPMI PCA9511A 14A PCA95083 3551 NXP FC Solution PCA9540B Hot swap Butter Fan trays with Identical PUAJIJI IZ IC address Eu Management Control Voltage Hot swap ETs Eloa PME PM Buffer EEE E IC SI LM75A GPIO SE98 SA56004 NE1617A PCA8574 PCF8574 NE1619 PCA953x PCAY55Xx 26 Internal Power Supply Problem Power supply requires 1 5 kV isolation on PMBus Solution Opto coupler is required and P82B96 or PCA9600 bus extender converts opto coupler electrical transmit receive signals to IC and PMBUS Internal Power Supply PMBus AEW 00 is 1 MHz With improved voltage T Opto coupler p PMU pair threshold on Sx Sy side over P82B96 1k Ohm AUL Digital POT y PCF8591 27 Hot Swap External Power Suppl
4. equivalent 5 V alternative for the ST2221A and STPO8CDC596 Br NX 62 LED Controllers Example Applications LED Application Mobile LED Blinking Dimming Fun lighting Color mixing Part Type PCA9632 Flash LED Success Story in Mobile SSL3250A LED Application Consumer Mouse amp Pointing Devices Part Type PCA9633 4 5 LED Controller Success Story in JVC Application JVC LCD Backlight for Car Audio Part Type PCA9624PW Description 8 channel LED controller 40 V 100 mA EAU 1 M pcs LED Controller PCA9633 Application Mouse Headset Keyboard BATTLELIGHT LED Application Automotive Backlight Application PCA9626 Based Single Chip Automotive Cluster Lighting Customer Continental EAU 12V 3 LEDs in series per color SS RGB Current G i limiting moo series ES i o n resistors I I i 3 Output i Channels i used for each 3 dotted line LED Controller PCA962x Application Pachinko and Slot Machines Party Type PCA9622DR S900 PCA9624DR S900 PCA9626DR S900 Description 40 V 100 mV 8 16 and 24 channel LED controllers Which tools to help you win EC Demoboards Demo and Evaluation Boards Evaluation Demo Board List OM OM6270 OM6271 OM6272 OM6273 OM6274 OM6275 OM6276 OM6277 OM6278 OM6279 OM6281 OM
5. I2C bus Protocol amp Applications SASE March 2010 Alix Maldonado Technical Marketing Manager Product Line System Management Business Line Interface Products Agenda 1 C bus Protocol Applications Support resources Questions I2C Protocol Logic er gt This means e Decreased number of wires reduced PCB area Reduced number of chip pins Remove glue logic e Clip many devices on to the bus Modular design Time to Market 12C bus developed in the late 1970 s for Philips consumer products e g TVs gt Worldwide industry standard and used by all major IC manufacturers I2C Protocol SDA SCL 2 2 wire bus SDA Serial Data Line SCL Serial Clock Line Open drain or open collector output stages wired AND function Re I2C Protocol Vop I SDA SCL Multiple master Multiple slave Bi directional Master transmitter Master receiver Slave transmitter Slave receiver Data collision is taken care off I2C Protocol Each device is addressed individually by software New devices or functions can be easily clipped on to an existing bus 112 different addresses max with the 7 bit format others reserved additional 1024 with 10 bit format Address allocation coordinated by the I C bus committee Programmable pins means that several of the same devices can share the sam
6. PCF85116 3 SA56004 Add Extra I O Ports Temperature Sensors LED Drivers Real time Clock 12C Bus Switching USB Connection to trial version only devices on board and that fixed address is operational Graphics Interface for Windows PC Laptop www ics nxo com support boards i2c20051 Target Board amp USB based GUI 400 kHz OM6275 a a A 8 4 4 Re ee E FA E 4 1 P T HAE cm a T a ha E 4 a Pot ES Eu 5 Ei Get the color right with the single chip four color LED driver RGB E Individual and Global PWM to set your perfect color and brightness or blink EC interface for easy connection to Micro or Baseband IC Demo board with on board micro LPC900 and FETs OM6276 Stand alone demo Board OM6282 www ics nxp com support boards pca9633 Blink an LED without bit banging Dim and LED without burning a PWM on the MCU Two PWMs to map across 2 4 8 16 outputs 25 mA per pin 2C interface for easy connection to Micro or Baseband IC Demo Board with on board micro OM6279 PCA9533 PCA9531 On board NXP MCU demonstrates capabilities www ics nxp com support boards leddemo LED Control Card 8 RGB LEDs Easily Test and Demonstrate the PCA9698 40 Bit GPIO Demonstrates a wide range of functions 1MHz Fast mode Plus C bus serial interface with 30mA drive 2 3 to 5 5V operation with 5 5V tol
7. 4x 1 25 Gbps OPTIC XCVR Ethernet 12C slave slave for Mgmt ATMEL 64kbit DDR EEPROM NES7811 Memory 2 POWER Es PC 4x 1 25 Gbps OPTIC XCVR 2 PONASIC Fast Ethernet for System Mgmt ASIC NE IFC ATMEL 64kbit 1 GE 1GE 1GE 1GE DDR EEPROM NO i EC Buffer for Box to Box Communication Problem Box to box uses more expensive connectivity solution Solution FC buffer PCA951 7A is a cost effective solution and operate up to 400kHz 5521 NXP PC Solution A side 2 meter cable Sa eS aS D a F3 ais Ss e de de e de TT u S SR 1 34 Advanced TCA Basic PICMG PCI Industrial Computer Manufacturers Group Specifications body 700 members us Cala AdvancedTCA is the name for PICMGSSeeStanG aras ang joes Nijvanced TON LAT 0008 m tr cote hehe A END 6 oonan 222 1 0100000 ata NIT RN WOOO AARC a A pone er 0 y La ts y naa ES PAD PC is used for Management in Zone 1 35 ATCA Shelf Manager IPMB 0 Hot swa Hot swa Buffer Buffer Buffered 12C bus ENS OS 12C bus lines SCL and SDA signals SCL and SDA renamed LCL and LDA because large capacitance FO en is allowed on
8. them Repeat for up to 24 lines Repeat for up Z E AA Note Sx means SDA and SCL Lx means LDA and LCL 36 Voltage Translator with Hot Swap for Modular Systems with FC at Card Edge gt PCA95124 integrated rise time accelerator gt PCA9508A No rise time accelerator and no offset Features Integrated IDLE STOP for hotswap HC master or slave devices su ppo rt e ed Integrated rise time accelerator no e Voltage translation support N NUN EEE QN PCA9512A New Product Connectors WMEICPCI or ATCA Tranceivers 3 Hot swap for Modular Systems with I C at Card Edge gt PCA9511A 0 6 V threshold gt PCA9514A 0 8 V threshold Features Integrated IDLE STOP for hotswap NC master or slave devices support dj pr e Integrated rise time accelerator 2 V 5 5 V 0 9V 5 5V NN un Connectors bo i WME CPCI or ATCA Tranceivers A Master PCA9665 Application Industrial Bus Buffers Bridges GPIO 39 Industrial Application using I2C bus Extender 3 3 5V 12V 12V Twisted pair telephone wires u i USB or flat ribbon cables Up to 15V logic levels Include Vec amp GND SCL 3 3 NO LIMIT to the number of connected bus devices E 3 3V SDA SCL SDA SDA SCL SDA SCL SDA SCL alo Link parking meters Link ven
9. 34 PCA9635 lO Expanders PWM Control and Color Mixing for LCD Backlighting PCA9537 PCA9534 PCA9535 PCA9530 33 LED Dimmers PCA9550 53 PCA9901 1 Wire LED Blinkers NO Application Gaming LED Sign LED Controllers LED Controllers For Architectural And Accent Lighting mN i UR N L Ek E 3 L A t cu SE a E sl LED Controllers For Architectural And Accent Lighting Features Needed e Drive Medium to High Power Multiple Color LEDs e Provide Flexible PWM Control e Provide Simple Interface To Master Controller Micro e Provide Simple Command Sequences To Control Brightness And Color Mixing e Offload Micro For Repetitive Sequences Patterns Reduce Micro Firmware Overhead e Provide Solution To Drive LEDs on Long Cables LED Drivers Blinkers and Dimmers E ON ed Voltage on RED LED driver E BE me ON Voltage on GREEN LED driver river E Voltage u E E ONbiue Voltage on BLUE LED driver 2 lt lbue gt Ss os t wu Frequency gt 80 100 Hz o o To perform color mixing Frequency high enough so the human eye does not see the ON OFF phases Brightness for each primary color desired amount of each primary color is controlled with the duty cycle Human eye sees the sum of primary colors average brightness X Red Y Green Z Blue ae IC Color Mixing LED PCA9
10. 6276 OM6285 OM6290 OM10088 More information Description SPI I C to UART Bridge Demoboard SC161S750 SPI to I C Master Bridge Demoboard SC181S600 UART to I C Master Bridge Demoboard SC181M700 SPI I C to Dual UART IRDA GPIO Demoboard SC161S752 LC to SPI Master Bridge Demoboard SC181S602 C 2005 1 Demo Board 15 I C devices w USB control amp GUI PCA9633 Demo Board Four Color PWM LED Control with Microcontroller PCA9564 Eval Board IC Master 2002 1A Eval Board 11 I2C devices w printer port control amp GUI LED Dimmer Demo Board PCA9698 Demo Board Advanced 40 bit GPIO with PCA9530 LED blinker PCA9633 Demo Board Four Color PWM LED Control I lt C 2002 1A Eval Board without printer port control amp GUI IC bus LCD driver evaluation board PCF8562 LCD Segment Display NXP Bridge IC Demo Board Kits SPI to I2C master SC1815600 707 22 AR lude its inc K a o 2 O o SPI Sample code ICes and NXP 12C dev User Manual Le ES 4 X _ o Key Benef a a _ interface to SPI host Easy ious I2C and GPIO and var On board I2C EEPROM and I2C LED devices O o a o _ Experience the variety of I C peripherals with the latest PC Training Board Fifteen different IC devices on one board allows easy experimentation and training PCA9536 PCA9538 PCA9540B PCA9541 PCA9543A PCA9551 PCF 8563 PCF8574
11. 633 Individual Global PWM 1 MHz 12 Bus OE Sub1 addr Sub2 addr HW Addr pin addr Sub3 addr Group addr 58 LED Architectural Lighting 12V 3 3 5 V Twisted pair telephone wires N g USB or flat ribbon cables St Up to 15V logic levels Include V amp GND 3 a NO LIMIT to the number of connected bus devices 3 3V S Ne LED Controllers For Signage And Large Displays 60 LED Controllers For Signage And Large Displays Features Needed e Drive Low To Medium Power Color LEDs e Constant Current Drive For Predictable Brightness e Serial Shift Data Mode e LED Output Error Detection PCA9922 Serial Interface LED Controller Constant Current Output LED Driver for large LED signs Features e 25 MHZ serial interface e 3 3 V to 5 5 V operation E UMSS e 8 LED low side constant current outputs ji mr Som T e Global control for the 8 LED outputs a ee variable between 15 mA to 60 mA q nn 5 mA to 60 mA maximum current for all 8 E y Y output channels set by an external resistor PA e Constant current matching at 25 C auro pea Vop 5 0 V R EXT 1 Bit to bit 6 Er a e Chip to chip 10 pi e Gradual turn on turn off output to limit EMI Lico p Error detection mode for line open output short to ground LED open and LED short 40 C to 85 C operation es IT TI TI The PCA9922 is a pin to pin functionally E 7 fe
12. SYSTEM 3 a e g alarm system 5 Drive alarm pins D Von 24 LED MATRIX 7 Read out keys position yS p C ALPHANUMERIC 6 Make even LED displays KEYPAD AX r Application Mobile GPIO LED control 49 Ultra Low Voltage GPIOs Make Design Easier Benefits New Dual Rail Easy to add I O x8 x16 via 12C Avoid Costly Congested PCB Level Shifting PCA9575 7 2 Combat Feature Creep by expanding l O port Fir Deus Pont Integrated Functionality LCD or Camera control signals Pr ble On Off C RESET amp INT Frogrammapie On ontro Monitor Input State Change Blinking Dimming Keypad Control eypa on ro Voltage Translation 1 1 3 6V Seamless migration to newer Baseband ICs gt Optimized for Mobile 1 Low Power Consumption Low Vcc and bus voltage 1 1V 3 6V Hardware RESET pin Programmable Pull up Pull Down Bus Hold Feature Small amp Thin HWQFN package 3x3x0 8mm Zoom in view 50 PCA953x 5x for key pad control e Can be placed anywhere only 2 wires pass through congested routing area DC L INT output Lid open Enable Disable Shutdown Standby Reset INT INT2 INT3 XG XEG6V d LED Controls via I2C Old Design New Design new problems EC Solves the problem Aux Keypad Y g LED eb LED array ALL EEN 52 LED Control and IO Expansion via I2C PCA9633 PCA96
13. aster that lost the arbitration must stop sending data Re I C bus Building Blocks Functions with 12C I2C Bus Architecture Devices Custom I2C hardware or software emulated Other hardware 20 Market Application Segments Computing gt Communication Industrial Mobile gt Gaming LED Sign Application Computing Server IPMI p b b 22 Server IPMI SC1815600 601 SC18IM700 om mmm me SC161S650B 652B External N SC16C750B 752B 8 bit Parallel Memory Bus Switch SA56004 LM75A PWM PCA9509 17 Soe EC Bus mm E E mm EU EU ll Power S B PCA9540 PCA9534 85 DCA9542 9548 PCA9554 55 PCA9536 7 8 9 lt GPIO PCA9698 PCI X SC1618740 750 760 nn 505 Fr A Remote control 1011A 1012 PCA9510A CBTUOSOS Warning LED control PCA9514A IP PCA9633 4 5 PCA9508 PMB BUFFER PCA9530 31 32 33 PCA9519 m TT PCA9550 51 52 53 NE Storage Server Block Diagram PCA9519 performs level translation for BMC s I C ports PCA9552 collects hard drive interrupts and turns on off LEDs SouthBridge SB FRONT SIDE BUS CPU Board Mgmt Control BMC
14. ding machines and pay stations to save cell phone links Warehouse pick pack systems Factory automation e Access alarm systems e Video LCD amp LED display signs Hotel motel management systems un E Monitor emergency liahtinda exit sian 40 Long Distance IC Communication in Noisy Environment single ended IC Capacitance noise isolation TTL compatible I O 12 V high drive offset free on T R side New PCA9601 3 3V 5 5V Sampling gt y 42 Seamless interface to opto coupler Differential IC New Sample 3 3V 5 5V Sept 10 55V gt Convert single ended FC to Differential 12C gt Low common mode noise voltage Termination resistors are not shown Bridge Application example SPI CPU interface with the I2C devices SC1815600 601 IFC Master I2C Master IC Bus 42 u Brid Bridge Application example I2C CPU interface with Modem and IrDA SC161S752 762 m Phone Jack CPU Modem INT 0 TXB RXB NO IrDA TRANSCEIVER HE s Bridge Application example 49 SPI CPU interface with the I2C devices SC1815600 601 6 Master IC Bus 44 Bus Buffering for Complex Systems amp Out of the Box Short Cable 5m Connectivity Problem For redundant server system management through the use of other kind of connectivity is more costly and often unnec
15. e bus Unique address per device fully fixed or with a programmable part through hardware pin s gt 10 bit format use a 2 byte message 1111 OA AgR W AAA A AAA Vop SDA SCL 5 44 43 A2 Fixed Hardware Oo Programmable AX I2C Protocol Master Communication must start with START condition Start bit is always followed by slave address YE Master or Slave Slave address is followed by a READ or NOT WRITE bit The receiving device either master or slave must send an ACKNOWLEDGE bit gt Communication must start with STOP condition Example Transmit 0 Write Receive 1 Read ES oam ET EEE NO I2C Protocol Start condition a HIGH to LOW transition on the SDA line while SCL is HIGH Stop condition a LOW to HIGH transition on the SDA line while SCL is HIGH SDA SCL SCL P START condition STOP condition I2C Protocol During data transfer SDA must be stable when SCL is High data line change stable of data data valid allowed I2C Protocol Each byte has to be followed by an acknowledge bit Number of data bytes transmitted per transfer is unrestricted If a slave cant receive or transmit another complete byte of data it can hold the clock line SCL LOW clock stretching to force the master into a wait state MSB acknowledgement acknowledgem
16. ent Sr signal from slave signal from receiver byte complete interrupt within slave clock line held low while interrupts are serviced scL or 1 2 f 8 q gt 3 8 g or S P L Sr ACK ACK LP START or STOP or repeated START repeated START condition condition I2C Protocol a DATA OUTPUT T BY TRANSMITTER not acknowledge DATA OUTPUT E gt BY RECEIVER acknowledge SCL FROM S LS clock pulse for START acknowledgement condition C specification Data transfer with acknowledge is obligatory The receiver must pull down the SDA line during the acknowledge clock pulse so that it remains stable LOW during the HIGH period of this clock pulse Scenarios with a NOT acknowledge NACK SDA staying HIGH 1 A receiver with the address is not present in the IC bus 2 The receiver is performing real time tasks and it cannot process the received IC information 3 The receiver is the master and wants to take control of SDA line again in order to generate a STOP command The slave transmitter MUST then release the SDA line when it sees the NACK so the master can send the STOP command AK k I2C Protocol 00 Two or more masters may generate a START condition at the same time Arbitration is done on SDA while SCL is HIGH Slaves are not involved SDA Master 1 Master 2 TTF mast
17. er 1 loses arbitration DATA17SDA Summary The master that first sends a 1 while the other sends a 0 loses control arbitration I2C Protocol Wired AND SCL connection T shortest T min Ty Tyo Ty Internal counters of masters count the LOW and HIGH times T and Tiz Tho start counting wait HIGH period 2 state vi TTnn Ti Tan counter CLK a reset TL A Tia SCL PC Protocol Modes Fast Mode Plus FM High Speed Mode Bitrate kBit s 0 1700 0 3400 Address bits 7 10 7 10 Capacitive Bus Load pF 400 100 3 Sink current mA 3 Fast mode Plus FM Increased bandwidth Increased transmission distance at reduced bandwidth gt gt 550 pF bus load 15 I2C Protocol Modes Electrical specification Bitrate kBit s 0 100 0 400 0 1000 0 1700 0 3400 Address bits 7 10 7 10 7 10 7 10 7 10 Fast Mode Plus FM High Speed Mode Capacitive Bus Load pF 400 400 4000 400 100 Sink current mA 3 3 20 3 3 Trise Rise time ns 1000 300 120 160 80 Lise Vin A A APA E a aa S 0 7 Vo Vous V a A A E 0 3 Von VoL dde e NENNEN a gnd t t 0 4 V 3 mA sink current ts gt 0 4 V 20 mA sink current FM I2C Protocol Vopvoltage can be chosen freely Pull up resistor value Minimum resistor value e Dete
18. erant I O 40 configurable I O pins that default to inputs at power up Designed for live insertion in PICMG applications Onboard PCA9530 LED dimmer blinker for LED applications Low standby current a E on a t ok L or Demo board 0M6281 a o NOS ua WWW ics nxp com support boards pca9698 Ta An WE i Tag Train on many FC peripherals using parallel prinos port to PC Eleven different 1 C devices on one board allows easy experimentation and training LM75A P82B96 PCA9600 PCA9501 PCA9515 P A9 43 PCA9550 PCA9551 CA9554 PCA9555 PCA9561 PCF8582C 2 Add Extra I O Ports Temperature Sensors LED Drivers PC Bus Switching 12C Bus adapter uses Whiter printer port for connection to full version all devices and addresses operational of Graphics Interface for Windows PC Laptop Wwww ics nxp com support boards i2c20021 Target Board plus parallel printer port control 100 kHz amp GUI OM6278 Target Board only OM6285 PC Wint2GNT PCAS551 G bit LED Driver Dinkar E Fle Deven Options Window Hels LED Mocha Salso NXP I C bus LCD driver evaluation board OM6290 The NXP 12C bus LCD has three displays each controlled by an 6 0 5 LCD driver The segment display has a backlight driven by LED driver PCA9633 The board includes an NXP ARM7 microcontroller LPC2148 Demo board OM6290 1 TH 1 em I ATEN a ui Easily drive a LCD Segment Display wi
19. essary Solution IEC bus is a cost effective solution and allows bidirectional communication from 100kHz to 400 kHz and with PCA9517A bus buffer it is cheap and reliable 2 7V 5 5 V 0 9V 5 5V 0 9 V 5 5 V 2 7V 5 5 V Bus Buffering for Complex Systems amp Out of the Box Long Cable gt 1 km Connectivity Problem Driving gt 1 km typically requires very expensive discrete components Solution l C bus is a reliable cost effective solution that allows bidirectional communication up to 100kHz P82B96 PCA9600 PCA9601 3 3 5 5 V 3 3V 12 3 3 12 3 3 55 I2C bus GPIO Advantages Applications e Resolves 20 address conflicts e C bus isolation e Processor pin savings e LED control e Improved board routing e Temperature sensing e Reduced board space e Fan control T Va Temperature Sensor spa 0 E Battery Voltage SCL o2 Y Reset Signal INT RESET 03 Status Information OE 014 Push AO S Button A1 05 A 06 ne Ea LEDs 0 47 PC GPIOs General Purpose I O Expanders 1 a ad 1 LED driver Voo Ne PCAS9698 an 2 Read interrupts e g temp sensor INT SCL 100 0 DA IO0 1 RESET 00 2 INTISMBALERT 100 3 RESET 100 4 SUBSYSTEM2 100 5 g counter 3 Give subsystem resets controlled switch 2 g CBT device D gt 4 Control devices enable ALARM SUB
20. rmined by the I C spec limit of 3 mA sinking current e R V Dpmax Voimax 0 003A e Example using a Vpp 5 0 5 V Rurup 5 5 V 0 4 0 003 A 1 7 KQ Maximum resistor value e Determined by the I C bus rise time requirements V t 0 3 Vbp Von 1 1 e RC then t 0 3566749 RC V t 0 7 Vop Von 1 1 et2 R6 then t 1 2039729 RC t t t 0 8472979 RC e For standard mode 2C bus t 1000 ns 1 us so RC 1180 2 ns e Example at a bus load of 400 pF R 2 95 KO e For Fast Mode PC bus rise time 300 ns 400 pF Ray 885 O I2C Protocol START HIGH to LOW transition on SDA while SCL is HIGH STOP LOW to HIGH transition on SDA while SCL is HIGH 8 bit word MSB first Address Control Data Must be stable when SCL is HIGH Can change only when SCL is LOW Number of bytes transmitted is unrestricted DATA Done on each 9th clock pulse during the HIGH period ACKNOWLEDGE The transmitter releases the bus SDA goes HIGH The receiver pulls DOWN the bus line SDA goes LOW Generated by the Master s Maximum speed 100 400 1000 3400 kHz but NO min OS A receiver can hold SCL low when performing another function transmitter in a Wait state A master can slow down the clock for slow devices Master can start a transfer only if the bus is free ARBITRATION Several masters can start a transfer at the same time Arbitration is done on SDA line M
21. th a very small MCU and PCF8562 Good for a User Interface at the front panel of a system Scalable to match the complexity of the LCD display Simple code using industry standard 8051 core Easily reprogram micro via USB adapter OM10083 http www teamfdi com products Icddemo Icddemo shtml er Demo Board with on board micro OM10088 RE EEE CEE CEE EE EEE EEE CEE EE COG is an option Easy Access to IC Technical Help Three easy ways to ask technical questions and obtain answers I7C discussion Forum Coto page 1 2 3 4 5 6 7 Next En E newtopic Forum Index gt 12 discussion Forum Mark all topics read Fri Jul 28 2006 9 40 am Paul Brady 0 Fri Jul 21 2006 5 47 pm Paul Shubel E I2C and SCCE O Paul Brady 651 LPCZ1 Slave Port a Paul Shubel 565 Access I2C Discussion Forum from gt www nxnD com i2c Product families amp functions CONTACT link ON every E Literature brochures leaflets Product Information Page A Support manuals models FAG software demoboard WWW NXP CO m su ppo rt E Packaging specs amp SOT 3 E Quality handbook markings E Contact sales distributors Send e mail directly to I2C Support nxp com Ne lt Device Data Sheets IBIS models Application Notes and Other Information Se l i ome DSO erne piore 5 File Edit Wem Favorites Tools Help ae Back gt x ia Die Search ste Fa
22. vorites LI E 3 Address http han np comjizclogic be Doe Links u ig PD rod U ct fa m ly Select site English descriptions gt ee line cards cross reference data sheets Ics Pe Seareh 4 nz Logic Microcortrollers Introduction E A Analog Products Interface El RF Applications Product families amp functions E Literature brochures leafletz NOT CCC ON presentations Support manuals models FAG software demoboards tools training E Packaging specs amp SOT s E Quality handbook markings E Contact sales distributors As the inventor and world leader in fc devices we have a vast portfolio of products with fc interfaces We have dedicated proc Used to expand and interconnect Lem jale TH Pil pose expanders repeaters hubs extenders and LED drivers Our logic products are ideal for many using SMBus AdvancedTCA ATZE IPM and PMBus Link to app notes El improved PCA245084 C EEPROM PCA95154 IBIS model mo d e Interface marketing solutions PC49519 IBIS model PCF85644 RTC with fC interface user guides TE E TET PLL desi n Portfolio oo a l ais LE g Em JC General RE LED j N f g PR l y Da A D or DIA Purpose NO J a la a a software Converse Expanders Sortrotor Co reta datasheets BR LI ll ll no i E D
23. y External Power Supply 2kbit EEPROM Power Supply Unit He 1k Ohm Digital POT EXE NXP I2C Solution Hot swap Buffer PCA9508 PCA9512A I O Expander PCA8574 PCF8574 PCA953x PCA955x Temp Sensor LM75A SE97 SA56004 NE1617A 28 I2C busVoltage Translator 2 7V 5 5 0 9 V 5 5 V Features Capacitance noise isolation cM Voltage Translation A side 0 9 V to 5 5 V B side 2 7 V to 5 5 V gt TTL compatible I O High drive offset free A side 6mA Applications Telecom 2 7V 5 5 V 0 9V 5 5V Storage Computing Switching Power Supply NI Voltage Translation for Low Voltage Master or Slave 1 Low Voltage Master A 1 1Vupto VB 1V a 3 0V 5 5 V Static Level Normal I O Level Offset E 2 Low Voltage Slave stan Level Normal I O Level Ne Application Communications Networking Line Card ke 31 Networking Line Card LE RS232 Ethernet Alarm Interface Status Monitor Memory Module Module 1 Module O 2 Transceiver SC Glue Logic Microcontroller Serial Transmit Clock Distribution Main Clock System Clock NE GigE over Passive Optical Network GPON PCA9543A allows easy plug in for 2 line cards having the same I2C address without address conflict PON ASIC
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