Smart, simple solutions for the 12 most common design concerns NXP I2C-bus solutions 2H 2011 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. SDA SCL uC Invented by NXP (Philips) more than 30 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 (Fast-mode), 1 MHz (Fast-mode Plus), 3.4 MHz (High Speed-mode), or 5 MHz (Ultra Fast-mode). Parallel Interface I2C Serial Interface 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. MCU A/D D/A I/O LCD RTC 1010A2A1A0R/W New function address MCU A0 A1 A2 New function 1010011 R/W New function address as assigned 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. Write data S Master slave address W A data < A data A n data bytes P SDA transmitter receiver SCL > Read data S Slave SDA slave address R A data A < n data > bytes S = Start condition R/W = read/write A = Acknowledge A = Not acknowledge data A P last data byte P = Stop condition receiver transmitter SCL The master always sends the clock NXP’s I2C peripherals portfolio is grouped into twelve families, one for each of the most common, everyday design concerns. Sensors and voltage management Digital temperature information General Purpose Input Output (GPIO) expanders Add different types of inputs and outputs Black-and-white LCD display drivers Monochrome, character, shapes, dots Clocks / RTCs Digital time and/or calendar Multiplexers and switches Add advanced I2C networking to allow more devices, backup, hot-swap Tiny serial ADCs / DACs Analog control and audio I2C-controlled DIP switches EEROMs / RAM combined with general-purpose outputs Bus buffers and voltage translators Extenders, hubs, and repeaters to support extra devices, longer distances, bus-voltage translation, or hazardous conditions Intelligent Stepper Motor Controllers Easy and versatile control Capacitive Sensor Switch action without contact Bridge ICs, bus controllers Add extra, fully featured I2C masters Blinkers, dimmers, drivers For complete LED control, including LCD backlighting More information www.nxp.com/interface I2C-bus product summary GPIO Expander 4-bit 8-bit 16-bit 40-bit Stepper Motor Controller PCA9536 4-bit I2C Fm TP GPIO with PU PCA9537 4-bit I2C Fm TP GPIO with INT and RST PCA8574 8-bit I2C Fm QB GPIO with INT and PU PCA8574A 8-bit I2C Fm QB GPIO with INT and PU (Alternate address) PCA9500 8-bit I2C Fm QB GPIO with PU and 2-K EEPROM PCA9501 8-bit I2C Fm QB GPIO with INT, PU and 2-K EEPROM PCA9502 8-bit I2C Fm/SPI TP GPIO with INT and RST PCA9534 8-bit I2C Fm TP GPIO with INT + PCA9538 8-bit I2C Fm TP GPIO with INT and RST + PCA9554 8-bit I2C Fm TP GPIO with INT and PU PCA9554A 8-bit I2C Fm TP GPIO with INT and PU (Alternate address) PCA9557 8-bit I2C Fm TP GPIO with RST PCA9574 8-bit I2C Fm LV VLT TP/OD GPIO with INT, RST, latch and PU/PD PCA9621 8-bit I2C Fm+ 65 mA OD GPO with RST PCA9670 8-bit I C Fm+ QB GPIO with RST and PU PCA9672 8-bit I C Fm+ QB GPIO with INT, RST and PU PCA9674 8-bit I2C Fm+ QB GPIO with INT and PU PCA9674A 8-bit I2C Fm+ QB GPIO with INT and PU (Alternate address) PCF8574 8-bit I2C Sm QB GPIO with INT and PU PCF8574A 8-bit I2C Sm QB GPIO with INT and PU (Alternate address) PCA6416A 16-bit I2C Fm LV VLT TP GPIO with INT and RST 1 motor controller PCA9629 I2C Fm+ Stepper Motor Controller with TP GPIO with INT and RST Capacitive Sensor 8-channel touch switch + PCA/PCF8885 I2C FM Touch / Proximity Sensor for up to 28 keys Temp sensors LM75A I2C Fm TS local with ± 2 °C accuracy LM75B I2C Fm TS local with ± 2 °C accuracy and SMBus time-out SE95 I2C Fm TS local with ± 1 °C accuracy SE98A I2C Fm DDR TS local with ± 1 °C accuracy and SMBus time-out SE97B I2C Fm DDR TS local with ± 1 °C accuracy, 2K SPD and SMBus time-out NE1617A I2C Fm TS local with ± 2 °C accuracy and remote with ± 3 °C accuracy SA56004 I2C Fm TS local with ± 2 °C accuracy and remote with ± 1 °C accuracy NE1619 I2C 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, VCCP, and VDD) PCA9530 2-channel I2C Fm OD LED dimmer with RST PCA9531 8-channel I2C Fm OD LED dimmer with RST PCA9532 16-channel I2C Fm OD LED dimmer with RST PCA9533 4-channel I2C Fm OD LED dimmer PCA9550 2-channel I2C Fm OD LED blinker with RST PCA9551 8-channel I2C Fm OD LED blinker with RST PCA9552 16-channel I2C Fm OD LED blinker with RST PCA9553 4-channel I2C Fm OD LED blinker SAA1064 16-channel I2C Sm current source/sink 4x8segment LED display PCA9632 4-channel I2C Fm+ low-power TP LED controller PCA9633 4-channel I2C Fm+ TP LED controller with OE PCA9634 8-channel I2C Fm+ TP LED controller with OE + PCA9635 16-channel I2C Fm+ TP LED controller with OE + PCA9685 16-channel I2C Fm+ TP LED controller with 12-bit PWMs and OE PCA9952 16-channel I2C Fm+ HV CS LED controller with OE PCA9955 16-channel I2C Fm+ HV CS LED controller 16-bit I2C Fm LV TP/OD GPIO with INT, latch and PU/PD PCU9955 16-channel I2C UFm HV CS LED controller 16-bit I C Fm LV TP/OD GPIO with INT, RST, latch and PU/PD 16-bit I2C Fm LV TP/OD GPIO with INT, latch and PU/PD (PU default) PCA9624 8-channel I2C Fm+ HV OD LED controller with OE PCA9622 16-channel I2C Fm+ HV OD LED controller with OE PCA9626 24-channel I2C Fm+ HV OD LED controller with OE PCU9654 8-channel I2C UFm HV OD LED controller with OE PCU9655 16-channel I2C UFm HV OD LED controller PCU9656 24-channel I2C UFm HV OD LED controller with OE SSL3250A I2C Fm 500 mA sink dual LED flash with torch mode SSL3252 I2C Fm 500 mA source dual LED flash with torch mode 2 Local Local and EEPROM Local and remote 2 PCA8575 16-bit I2C Fm QB GPIO with INT and PU PCA9535 16-bit I2C Fm TP GPIO with INT PCA9535A 16-bit I2C Fm LV TP GPIO with INT PCA9535C 16-bit I2C Fm OD GPIO with INT + PCA9539 16-bit I2C Fm TP GPIO with INT and RST PCA9539A 16-bit I C Fm LV TP GPIO with INT and RST PCA9539R 16-bit I2C Fm TP GPIO with INT and RST (state machine only) PCA9555 16-bit I2C Fm TP GPIO with INT and PU PCA9555A 16-bit I2C Fm LV TP GPIO with INT and PU PCA9575 16-bit I2C Fm LV VLT TP/OD GPIO with INT, RST, latch and PU/PD PCA9671 16-bit I2C Fm+ QB GPIO with RST and PU PCA9673 16-bit I2C Fm+ QB GPIO with INT, RST and PU PCA9675 16-bit I2C Fm+ QB GPIO with INT and PU PCAL6416A PCAL9535A PCAL9539A PCAL9555A 16-bit I2C Fm LV VLT TP/OD GPIO with INT, RST, latch and PU/PD PCF8575 16-bit I2C Fm QB GPIO with INT and PU PCF8575C 16-bit I2C Fm OD GPIO with INT PCA9505 40-bit I2C Fm TP GPIO with INT, RST, OE and PU PCA9506 40-bit I2C Fm TP GPIO with INT, RST and OE PCA9698 40-bit I C Fm+ TP/OD GPIO with INT, RST, OE and PU Local, remote, and voltage monitor LED controllers Dimmer (2 PWM, 25 mA / 5 V) Blinker (2 PWM, 25 mA / 5 V) 2 8-segment Controller (PWM / Ch, 25 mA / 5 V) Controller (PWM / Ch, 57 mA / 40 V) 2 2 Controller (PWM / Ch, 100 mA / 40 V) LED flash Real-time clocks Bus buffers PCA8802 I2C Fm RTC for One Time Password generation and smart cards PCA9510A I2C Fm Incremental Offset hot-swap bus buffer (no RTA) PCA9511A I2C Fm Incremental Offset hot swap-bus buffer I2C Fm Incremental Offset VLT hot swap bus buffer PCF8523 I C Fm+ Ultra low-power RTC with loss of main power detect and auto battery switch over PCA9512B PCA9513A I2C Fm Incremental Offset hot-swap bus buffer (92 µA CS) 2 Low-power Normal Temp-compensated Incremental Offset PCF8563 I2C Fm Ultra low-power clock/calendar PCA9514A I2C Fm Incremental Offset hot-swap bus buffer (0.8 V offset) PCF8564A I2C Fm Ultra low-power clock/calendar and COB PCA9521 I2C Fm (1 MHz) HV Incremental Offset bus buffer PCA9522 I2C Fm (1 MHz) HV Incremental Offset hot-swap bus buffer + PCA8565 I2C Fm High temperature clock/calendar -40°C…+125°C P82B715 I2C Fm HV bus extender PCA9525 I2C Fm (1 MHz) No Offset bus repeater PCA9605 I2C Fm+ No Offset bus repeater P82B96 I2C Fm HV bus buffer PCA9507 I2C Fm VLT DDC buffer with accelerator PCA9508 I2C Fm VLT hot-swap bus repeater PCA9509 I2C Fm 1.0V LV VLT bus buffer with current source PCA9509A I2C Fm 0.8V LV VLT bus buffer with current source PCA9509P I2C Fm 0.8V LV VLT bus buffer PCA9517A I2C Fm 0.9V LV VLT bus repeater PCA9519 4-channel version of PCA9509 PCA9527 I2C Fm DDC VLT buffer with accelerator and CEC PCA9600 I2C Fm+ HV bus buffer PCA9601 I2C Fm+ HV bus buffer with stronger 15 mA local side drive to support multiple Fm+ slaves PCA9515A I2C Fm bus repeater PCA9516A I2C Fm 5-channel hub PCA9518A I2C Fm expandable 5-channel hub I2C Sm Clock/calendar resolution: 0.01 s, with 256x8 SRAM PCF8583 PCF8593 I2C Sm Low-power clock/calendar resolution: 0.01 s PCF2127A I2C Fm High-accuracy, low-voltage RTC with 512x8 RAM + PCA/PCF2129(A) I2C Fm High-accuracy RTC Amplifier No Offset Static Offset (1 side) Muxes and switches 2-channel PCA9540B 2-channel I2C Fm mux PCA9542A 2-channel I2C Fm mux with INT PCA9543A/B/C 2-channel I2C Fm switch with INT and RST (B and C Alternate address) PCA9541A/01 Static Offset (All sides) 2 to 1 I2C Fm demux with INT and RST (channel 0 default) 2-to-1 demux PCA9541A/03 2 to 1 I2C Fm demux with INT and RST (no channel default) PCA9544A 4-channel I2C Fm mux with INT PCA9545A/B/C 4-channel I2C Fm switch with INT and RST (B and C Alternate address) 4-channel PCA9546A 4-channel I2C Fm switch with RST PCA9646 4-channel I2C Fm+ No Offset buffer/switch with RST PCA9547 8-channel I2C Fm mux with RST (channel 0 default) PCA9548A 8-channel I2C Fm switch with RST Voltage translator (doesn’t isolate capacitance) 8-channel GTL2000 22-bit I2C Fm+ VLT GTL2002 2-bit I2C Fm+ VLT GTL2003 8-bit I2C Fm+ VLT GTL2010 10-bit I2C Fm+ VLT PCA9306 Dual I2C/SMBus Fm+ VLT NVT2001 1-bit I2C Fm+ VLT NVT2002 2-bit I2C Fm+ VLT for I2C/SMBus applications NVT2003 3-bit I2C Fm+ VLT for two power supply applications NVT2004 4-bit I2C Fm+ VLT for SPI applications NVT2006 6-bit I2C Fm+ VLT NVT2008 8-bit I2C Fm+ VLT NVT2010 10-bit I2C Fm+ VLT Decode table Bus Speed Features Sm 100 kHz Standard-mode I C-bus LV Supply voltage <2.3 V Fm 400 kHz Fast-mode I2C-bus TP Totem-pole (push-pull) Fm+ 1 MHz Fast-mode Plus I2C-bus QB Quasi-bidirectional HSm 3.4 MHz High Speed-mode I C-bus OD Open drain UFm 5 MHz Ultra Fast-mode I C-bus CS Current source INT Interrupt 2 2 2 + 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 – 2 Supplies COG Chip on Glass Bridge and bus controllers LCD drivers Character driver Graphic driver PCF2113 I2C Fm 1/2-line, 12-character, 120-icon LCD driver PCF2116 I2C Sm 1/2-line, 24 characters per line, or 2/4 line, 12 characters per line PCF2119 I2C Fm 1/2-line, 16-character, 160-icon LCD driver PCF8531 I2C Fm 34 x 128-pixel LCD driver PCF8578 I2C Sm Dot-matrix LCD driver (row/column) PCF8579 I2C Sm Dot-matrix LCD driver (column) PCF8811 I2C Hsm 80 x 128-pixel LCD driver PCF8577C I2C Sm 64-segment LCD driver PCF8566 I2C Sm 96-segment LCD driver Bridge + PCA/PCF85162 I2C Fm 128-segment LCD driver + PCA/PCF85176 I2C Fm 160-segment LCD driver + PCA/PCF85133 I2C Fm 320-segment, COG LCD driver + PCA/PCF8536 I2C Fm 320-segment plus LED backlight control PCF8578 I2C Sm 384-segment LCD driver + PCA9620 I2C Fm 480-segment LCD driver + PCA/PCF85132 I2C Fm 640-segment COG LCD driver + PCA85232 I2C Fm 640-segment COG LCD driver A/D-D/A converters 8-bit ADC PCF8591 I2C Sm 4-channel ADC and 1-channel DAC PCF85102C I2C Sm 256 x 8-bit EEPROM (No programming time control output) PCF85103C I2C Sm 256 x 8-bit EEPROM (No programming time control output with ALT address) PCF8582C I2C Sm 256 x 8 EEPROM PCF8570 I2C Sm 256 x 8-bit RAM PCF8594C I2C Sm 1024 x 8-bit EEPROM EEPROMs 2-kbit 4-kbit 8-kbit DIP switch SL3S4001 PCA24S08A I2C Fm 3.6K bit EEPROM with dual Gen2 RFID interface I2C Fm 1024 x 8-bit EEPROM with access protection PCF8598C I2C Sm 1024 x 8-bit EEPROM PCA8550 I2C Fm 4-bit 1-of-2 mux & 5-bit EEPROM PCA9558 I2C 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 I2C Fm 2 x 5-bit mux/1-bit latch & 6-bit EEPROM PCA9561 I2C Fm 4 x 6-bit mux & 6-bit EEPROM I2C Fm/SPI-to-UART bridge with IrDA SC16lS741 I2C Fm/SPI-to-UART bridge with IrDA SC16IS750 I2C Fm/SPI-to-UART bridge with IrDA and GPIO SC16IS752 I2C Fm/SPI-to-DUART bridge with IrDA and GPIO SC16IS760 I2C Fm/SPI-to-UART bridge with IrDA and GPIO SC16IS762 I2C Fm/SPI-to-DUART bridge with IrDA and GPIO SC18IM700 UART-to-I2C Fm master bridge with GPIO SC18IS600 SPI-to-I2C Fm master bridge, 4 M with GPIO SC18IS602 I2C Fm slave-to-SPI master bridge PCF8584 I2C Sm bus controller with bus snoop PCA9564 I2C Fm bus controller PCA9661 + PCA/PCF85134 I2C Fm 240-segment LCD driver Segment driver SC16IS740 PCA9663 Controller 1-channel I2C Fm+ bus controller with 4 K-byte buffer 3-channel I2C Fm+ bus controller with 4 K-byte buffer per channel PCA9665 I2C Fm+ bus controller with 68-byte buffer PCA9665A I2C Fm+ bus controller with 68-byte buffer and restart condition fix 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 Demo boards e-Tools OM6275 I²C 2005-1 evaluation board OM6270 SPI/I2C-to-UART bridge demo (SC16IS750) OM6271 SPI-to-I2C-master bridge demo (SC18IS600) OM6272 UART-to-I2C-master bridge demo (SC18IM700) OM6273 SPI/I2C-to-DUART/IrDA/GPIO demo (SC16IS752) OM6274 I2C-to-SPI-master bridge demo (SC18IS602) OM6275 I2C 2005-1 evaluation board OM6276 PCA9633 demo board OM6277 PCA9564 evaluation board OM6278 I2C 2002-1A evaluation board OM6281 PCA9698 daughter card for I2C 2005-1 OM6282 PCA9633 daughter card for I2C 2005-1 OM6285 I2C 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 I2C 2005-1 OM6297 PCF2123, PCF8562 demoboard OM11051 PCF2127A demo board OM11057 PCF8885/86 capacitive sensor and PCF8536 LCD/LED driver OM13260 I2C Fm+ development board (RoHS) OM13243 PCA9555 daughter card (RoHS) OM13243 GPIO target board (RoHS) OM13257 LM75B daughter card (RoHS) OM13285 PCA9629 demo board OM13320 I2C Fm+ development kit (RoHS) OM6278 I²C 2002-1A evaluation board OM6277 PCA9564 evaluation board OM6293 PCA9600 daughter card for I²C 2005-1 OM6276 PCA9633 demo board Our I2C-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 I2C Fm+ development board and daughter cards make it easy to program new peripherals and are a quick way to learn about the I2C-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 OM13285 PCA9629 stepper motor demonstration board OM11057 PCF8885/86 touch switch with PCF8536 LCD/LED driver www.nxp.com/interface © 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. Date of release: August 2011 Document order number: 9397 750 17144 Printed in the Netherlands