I2C
IC serial bus protocol speed grades; standard mode: 0.1 / 0.4, fast mode: 1.0 / 3.4 / 5.0 Mbit/s are maximum ratings. Also known as: Inter-Integrated Circuit
See Also: Serial, Serial Communications, LIN, Can bus, ExpressCard, Fieldbus, FireWire, RS-232, RS-485, PCI Express, Serial ATA, Serial Peripheral Interface, SMBus
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Product
SparkFun Digital Temperature Sensor Breakout
AS6212 (Qwiic)
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This SparkFun Qwiic Digital Temperature Sensor Breakout provides a combination of high temperature accuracy with excellent low power consumption using the AS6212 digital temperature sensor from ams AG. The sensor measures temperature data up to ±0.2°C; accuracy over a wide range (-40°C; to +125°C;) and consumes an average of 6µA in normal operation (0.1µA in standby). The AS6212 communicates via I2C and has eight available I2C addresses selected by a pair of solder jumpers on the board. The breakout routes the I2C interface to a pair of Qwiic connectors to work with our plug-and-play Qwiic Ecosystem but also routes the bus and other pins to a standard 0.1"-spaced PTH header for users who prefer a soldered connection.
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Product
SparkFun GPS Breakout
ZOE-M8Q (Qwiic)
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The SparkFun ZOE-M8Q GPS Breakout is a high accuracy, miniaturized, GPS board that is perfect for applications that don't possess a lot of space. The on-board ZOE-M8Q is a 72-channel GNSS receiver, meaning it can receive signals from the GPS, GLONASS, BeiDou, and Galileo constellations. This increases precision and decreases lock time and thanks to the onboard rechargable battery you'll have backup power enabling the GPS to get a hot lock within seconds! Additionally, this u-blox receiver supports I2C (u-blox calls this Display Data Channel) which made it perfect for the Qwiic compatibility so we don't have to use up our precious UART ports. Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.
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Product
SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)
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Do you have too many sensors with the same I2C address? Put them on the SparkFun Qwiic Mux Breakout to get them all talking on the same bus! The Qwiic Mux Breakout enables communication with multiple I2C devices that have the same address that makes it simple to interface with. The Qwiic Mux also has eight configurable addresses of its own, allowing for up to 64 I2C buses on a connection. To make it even easier to use this multiplexer, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system.
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Product
Accelerometor, Gyro, Magnetometer Breakout Board
SEN-38001
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The LSM9DS1 is a highly configurable, flexible and precise motion sensing solution from ST Microelectronics - the latest in a wide-ranging inertial product line. It integrates a 3-axis accelerometer, 3-axis gyroscope and 3-axis magnetometer into a single IC , giving you a full nine degrees of freedom (9-DOF) in a tiny 3mm x 3.5mm package. Even with support components, square mounting pattern and connection breakouts for both SPI and I2C, this board is barely the size of a quarter.
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Product
SparkFun IR Array Breakout
55 Degree FOV, MLX90640 (Qwiic)
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It's time to say hip hip array for this IR Breakout! The MLX90640 SparkFun IR Array Breakout is equipped with a 32x24 array of thermopile sensors creating, in essence, a low resolution thermal imaging camera. With this breakout you can detect surface temperatures from many feet away with an accuracy of ±1.5°C (best case). To make it even easier to get your infrared image, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.
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Product
1Gsps, 9 Channel, Logic Analyzer with Protocol Analyzer plugins and Hardware Compression
DigiView™ DV509
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- Physical Channels: 9- Sample rate: 4ch@1 Gsps or 9ch@500Msps (4 ch. are sampled every 1ns or 9 ch. are sampled every 2ns)- Typical capture: 100M transitions (> 1B samples)- Hardware based triggers with 8 universal match circuits, and partitionable 16 stage sequencer- Adjustable Threshold (± 4V)- Real-time, Hardware-based, Adaptive Compression- Channels protected to ± 20V- Ground leads protected to ± 12V- High-quality test leads: 66 strand soft copper wires, flexible insulation, and gold plated connectors. Fit .025 square posts as well as the included clips.- Extra ESD protection- Streaming storage with auto fall-back to Store & Forward mode ensures large storage and reliability.- USB 3.0 (SS) or USB 2.0 (High Speed)- USB powered- Each DigiVIew includes all avialable Protocol Analyzer plugins (including: I2C, SPI, CAN, Async, Sync, 1-wire, I2S, TDM)- Free Plugin Developers' Kit- Requires Windows 7 or greater OS (32bit or 64bit)- Free Lifetime sofware updates.- 1 year warranty
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Product
SIMRC - 8 x Reed Relay Module, SPST
1010-R-8-1-5/1D
Reed Relay
Our small format embedded switching (SIM relay) cards offer a choice of switching configurations using low cost industry standard SIM connectors. They free the designer from the detail of routing complex switching circuits, you may select from a wide range of cards using the built in RS-232 and I2C interfaces. These low-cost embedded switching cards are intended to be mounted on to a simple motherboard. They may be used to construct very high density switching networks. SIM based switching cards also allow for very simple in-field maintenance.
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Product
SIMRC - SMB RF Adapter PCB
1092-001
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Our small format embedded switching (SIM relay) cards offer a choice of switching configurations using low cost industry standard SIM connectors. They free the designer from the detail of routing complex switching circuits, you may select from a wide range of cards using the built in RS-232 and I2C interfaces. These low-cost embedded switching cards are intended to be mounted on to a simple motherboard. They may be used to construct very high density switching networks. SIM based switching cards also allow for very simple in-field maintenance.
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Product
SparkFun Qwiic MicroPressure Sensor
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The SparkFun Qwiic MicroPressure Sensor is a miniature breakout equipped with Honeywell's 25psi piezoresistive silicon pressure sensor. This MicroPressure Sensor offers a calibrated and compensated pressure sensing range of 60mbar to 2.5bar, easy to read 24 bit digital I2C output, and can be calibrated and compensated over a specific temperature range for sensor offset, sensitivity, temperature effects, and non-linearity using an on-board Application Specific Integrated Circuit (ASIC). With its ultra-low power consumption and Qwiic ports, you've got yourself a power packed little sensor!
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Product
QSeven
ROM-7510
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*TI Sitara AM5728 Dual core cortex-A15 1.5GHz high performance processor*Onboard DDR3 memory 2 GB and eMMC Flash 8 GB*Support 1 LVDS, 1 HDMI, 1 USB2.0 OTG, 4 USB2.0 HOST, 1 USB3.0,2 UART, 1 CAN, 1 SATA, 2 I2C, 1 I2S, 2 PCIE 1 lane,*Operating temperature 0 ~ 60 °C / -40 ~ 85 °C*Supports Linux Yocto
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Product
Negative Tester
I2C
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telos EDV Systementwicklung GmbH
The most common use of an I2C interface is to send and receive data in compliance with the I2C specification. This implies that the device we are talking to is known to conform to the I2C standard, as well.
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Product
Smart Card Testers
CT1000
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The CT1000 testers are open and configurable to test any kind of communication protocols used on smart cards, and to be updated for new technologies. The systems can test devices that use common standard protocols (as ISO 18000, EPC Global Gen 2, ISO 14443, ISO 15693, MIFARE™, DESFIRE™, FeliCa™, ISO 11784/85, ICode™, Hitag™, ISO 7816, ISO 7813), and are ready to test also the next generation of cards protocols, such as: USB-Keys, MMC, Micro-SD (with and without CPU inside), M-SIM, HD-SIM, SIM-WAVE, and I2C.
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Product
Open Standard Module (OSM)
ROM-2620
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Advantech ROM-2620 OSM 1.1 Computer-on-Module is powered by NXP i.MX 8ULP SoC which includes up to 2 Arm Cortex-A35 cores in combination with one Cortex-M33 real timeprocessor and Vivante GC7000 nanoULTRA/GC328 graphics engine. It provides USB2.0, Fast Ethernet, MIPI-CSI, I2C, SPI, GPIO, PWM and MIPI DSI display for embedded applications
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Product
SparkFun Breakout
HMC6343
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The HMC6343 is a fully integrated high end electronic compass module that can compute and give you a heading direction that’s accurate within a couple degrees. It is tilt compensated and is calibrated to handle magnetic distortions. This breakout board allows for easy use of the HMC6343. All that is required is power and I2C connections to a microcontroller so that the module can receive commands and send data back to the user.
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Product
SparkFun GPS Breakout
Chip Antenna, SAM-M8Q (Qwiic)
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The SparkFun SAM-M8Q GPS Breakout is a high quality GPS board with equally impressive configuration options. The SAM-M8Q is a 72-channel GNSS receiver, meaning it can receive signals from the GPS, GLONASS, and Galileo constellations. This increases precision and decreases lock time and thanks to the onboard rechargable battery, you'll have backup power enabling the GPS to get a hot lock within seconds! Additionally, this u-blox receiver supports I2C (u-blox calls this Display Data Channel) which made it perfect for the Qwiic compatibility so we don't have to use up our precious UART ports. Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.
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Product
Ambient Light Sensors
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Renesas' ambient light sensors optimize display backlighting, enhance energy efficiency, and improve user experience with ultra-low light sensitivity, low power consumption, and precise spectral response. Our offerings include light-to-digital sensors with IR blocking filters and I2C interfaces, and light-to-analog solutions integrating photodiodes and amplifiers. Designed for automotive, industrial, and medical applications, these sensors deliver reliable performance even in demanding environments.
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Product
SparkFun Distance Sensor Breakout
4 Meter, VL53L1X (Qwiic)
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This SparkFun Distance Sensor Breakout utilizes the VL53L1X next generation ToF (Time of Flight) sensor module to give you the highly accurate measurements at long ranges for its size. The VL53L1X from STMicroelectronics uses a VCSEL (Vertical Cavity Surface Emitting Laser) to emit an Infrared laser to time the reflection to the target. That means that you will be able to measure the distance to an object from 40mm to 4m away with millimeter resolution! To make it even easier to get your readings, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system so no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1”-spaced pins in case you prefer to use a breadboard.
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Product
Interface
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Renesas offers industry-leading devices to enable efficient and reliable communication for industrial control, networking and computing applications. Dual protocol transceivers, voltage level translators, I2C Buffers, wide operating voltage range RS-232 transceivers, and RS-485/422 devices with the highest noise immunity and ESD protection in small packages are available to support high-speed data transfer and a variety of configurations to fit your applications.
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Product
64 Channel 12C GPIO Expansion
FXA-102 I2C Expander
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The FXA-102 provides 64bit of General-Purpose Input / Output (GPIO) which are controlled via I2C. It is 3,3V and 5V compatible and based on four 16bit I2C Port Expander (PCA9535). To simplify debugging each channel is equipped with a status led. Using the optional Phoenix Contact UMK housing, the FXA-102 can be installed on a DIN rail. The dual row 2,54mm pin headers allow usage with IDC20 connectors or wire wrap cables.
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Product
Mission Processor
58U91-03
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- +28 VDC input- 9 DC outputs at 600 Watts- Provides system EMI per MIL-STD-461- Continuous Background Built-In-Test (BIT)- Temperature monitoring- I2C communication
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Product
Smart Card Reader
UTC-300P-S
Card Reader
Dual color LED indicator. Memory Card: Synchronous 2-line, 3-line and I2C interface. CPU Card: Comply with ISO7816-1,2,3,T=1 and T=0 protocol. USB connection to UTC.
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Product
USB-8451, 250 kHz I2C, 12 MHz SPI I2C/SPI Interface Device
779553-01
Interface Module
The NI USB‑8451 is a master interface for connecting to and communicating with inter-integrated circuit (I2C), System Management Bus (SMBus), and serial peripheral interface (SPI) devices. With plug‑and‑play USB connectivity, the USB‑8451 is a portable solution to communicate with consumer electronics and integrated circuits. It also includes eight general-purpose digital I/O lines for a variety of applications, such as configuring the address of I2C devices or toggling LEDs. The USB‑8451 can be physically located more closely to I2C/SPI devices than PCI interfaces, reducing I2C bus length and minimizing noise problems. Additionally, the interface provides +5 V and GND to power circuits with no external power supply.
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Product
Multi Interface USB Adapter
SUB-20
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SUB-20 is a versatile and efficient bridge device providing simple interconnect between PC (USB host) and different HW devices and systems via popular interfaces such as I2C, SPI, MDIO, RS232, RS485, SMBus, ModBus, IR and others. It is also a full "any to any" converter between all supported interfaces and I/O features. SUB-20 is a powerful I/O controller with 32 GPIO, 8 Analog Inputs, PWM Outputs, Edge DEtectors, LCD, Leds and push buttons.SUB-20 system includes SW package containing driver, API Library, GUI and Command Line based applications, C,C++,C#,VB.net, MATLAB, LabView sample code and documentation. SUB-20 can be used with PC 64/32 bit running Windows 2000/XP/Vista/Win7/Win8, MacOS, Unix/Linux and DOS.Working with SUB-20 does not require deep knowledge of low layers of the specific interface. All you need to do is to call right API function at the right place. And this is really very easy as API functions are well documented and "exampled". API set is relatively small but comprehensive.SUB-20 is equipped with status Leds, optional LCD and buttons. All this guarantee fast and comfortable development, field debugging and maintenance of applications including option of standalone operation.
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Product
Lightning "Emulator" Shield
SEN-39002
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Arduino shield, ideal for AS3935 lightning sensor development. The lightning "emulator" generates a RF signal that mimics lightning strikes. This board is in an Arduino Uno form factor, and only uses GPIO and I2C, so can be stacked on many form factors (developed on an Uno and Mega).
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Product
Pico-ITX SBC With Intel® Atom® X5-E3940 Processor, DisplayPort, LVDS, 2 GbE LAN And Audio
PICO319
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The PICO319 is powered by the onboard Intel® Atom® x5-E3940 quad-core processor. The noise-free pico-ITX motherboard offers combinations of ruggedness, high computing capabilities and enhanced graphics capability in an extremely compact size of only 100 x 72 mm. Moreover, the board features 12V DC power supply input with AT Auto Power On function. A dual-display capability is available through DisplayPort and 18/24-bit single/dual channel LVDS ports. For extensive storage needs, this compact embedded motherboard has one M.2 Key B slot (22 x 42 mm or 30 x 42 mm) for SATA or PCIe x2 SSD card and one half-size PCI Express Mini Card slot in support of mSATA. The Intel® Atom®-based pico-ITX board comes with rich I/O connectors, including two USB 2.0 ports, two USB 3.0 (USB 3.1 Gen1) ports, one RS-232/422/485 port, one RS-232 port, one HD Codec audio, and 4-channel digital I/O. It also supports SMBus that is compatible with I2C for smart battery support. The PICO319 offers watchdog timer and hardware monitoring function for reliable operation.
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Product
1584W to 2500W - Single Output
HFE Series
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*1U rackmount containing up to 5 units*Up to 29.2W/in³ power density*Internal ORing MOSFET & Current Share*High Efficiency*Up to 9,500W in 1U rack*PMBus™(I2C) and LAN options
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Product
Digital Demultiplexers
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Advanced Science and Novel Technology, Co., Inc.
24:48 digital demultiplexer (DMUX) with SSTL1.5 input and output interfaces.Supports data rates from 1.0Mbps to 2.0Gbps.User-controllable independent internal delays for data and clock signals.1.5V I2C control interface with a user-defined 3-bit chip address.Preset function for synchronization of multiple parallel devices.Full-rate output copy of external high-speed clock input signal.Two pairs of clock divided-by-2 and synchronous clock enable outputs for supporting the tree-type demultiplexation structure.Additional synchronous clock divided-by-4 output.Dual power supply of +3.0V and +1.5V.Industrial temperature range.Low power consumption of 2.1W at 2.0Gbps.Available in custom 256-pin BGA package (13mm x 13mm x 2.5mm).
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Product
ContactLAB Spy
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Laboratory class spy and protocol analyzer for easy, non-intrusive capture and analysis of communication between contact cards and readers using SWP, ISO 7816, SPI and I2C protocols.
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Product
Electrical Interface
QSFP-DD 200G
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Eoptolink Technology Inc., Ltd.
QSFP-DD 200G Eoptolink’s EOLD-162HG-E-10-1 QSFP-DD CWDM4, 8x25G Optical transceiver module are designed for use in 200 Gigabit links over 10km singlemode fiber. They are compliant with the QSFP-DD MSA. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP-DD MSA.
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Product
USB Protocol Analyzers
Beagle Series
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Our line of Beagle Protocol Analyzers provide real-time visibility into I2C, SPI, and USB systems making them ideal tools for embedded engineers.The Beagle analyzers provide high-performance bus monitoring in a small, portable package that includes cross-platform software support making it perfect for engineers in the field and in the lab.





























