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Serial communication bus
I2C (Inter-Integrated Circuit; pronounced as "eye-squared-see" or "eye-two-see"), alternatively known as I2C and IIC, is a synchronous, multi-master/multi-slave
I2C
Microcontroller peripheral interface
I2C or UART protocol. With I2C it is possible to use a 4-pin connector. Alternatively the pins 1 to 4 can be used as simple digital I/O pins. I2C/UART/SPI:
Pmod_Interface
Human Y-chromosome DNA haplogroup
developed into several main subgroups: I2-M438*, I2a-L460, I2b-L415 and I2c-L596. The haplogroup can be found all over Europe and reaches its maximum
Haplogroup_I-M438
Serial bus specification
Carter (2024-04-01). "Working with I2C Devices: Clock Stretching". Adafruit Industries. "3.1.9 Clock Stretching". I2C-bus specification (PDF) (User Manual)
I3C_(bus)
connector layout which includes power and three serial buses: Asynchronous, I2C, and SPI separately over 10 pins in a 2×5 layout. The connector layout was
UEXT
Standard for miniature computer expansion cards
0, I2C and DP ×4 1630, 2230, 3030 Wi-Fi, WWAN, GPS, Bluetooth, NFC B (Socket 2) 12–19 SATA, PCIe ×2, USB 2.0 and 3.0, audio, UIM, HSIC, SSIC, I2C and
M.2
Standard for computer bootstrap code
identifying slave I2C devices like temperature sensors for hardware monitoring, whereas the alternative solution of performing a blind probe of the I2C bus, as
Open_Firmware
Software tool
GitHub Constantine A. Murenin; Raouf Boutaba (17 March 2009). "5.2. I2C bus scan through i2c_scan.c; 7.2. lm_sensors". OpenBSD Hardware Sensors Framework (PDF)
Lm_sensors
Wireless communication technology
LoRa SX1278, a LoRa module Developed by Cycleo, Semtech Connector type SPI/I2C Compatible hardware SX1261, SX1262, SX1268, SX1272, SX1276, SX1278 330 kilometres
LoRa
Digital audiovisual data interface
the E-DDC implement I2C standard mode speed (100 kbit/s) and allows it to optionally implement fast mode speed (400 kbit/s). I2C address 0x74 on the DDC
HDMI
bidirectional protected data communication with protocols such as Ethernet, SPI, and I2C, and includes 8 audio channels. APIX was developed by INOVA Semiconductors
Automotive_pixel_link
Serial port
supports one of are two widely used protocols Inter-Integrated circuit (I2C) and the Serial Peripheral Interface (SPI). Serial Peripheral Interface Bus
Synchronous_Serial_Port
Relationship between devices in which one controls the other
interface (SPI) bus typically has a single master controlling multiple slaves. I2C and I3C may even have multiple masters on a bus. Modbus also uses a master
Master–slave_(technology)
digital, these could be Serial Peripheral Interface, SMBus/I2C or 1-Wire. In OpenBSD, many of the I2C temperature sensors from the below list have been supported
List_of_temperature_sensors
Video interface protocol
I2C). The I2C master can read and write to all the slaves on the other side of the FPD-Link III chipset, which is effectively transparent to the I2C master
FPD-Link
Type of integrated circuit
(route any function to any pin), a serial communication block (for SPI, UART, I2C), a timer/counter/PWM block and more. PSoC is used in devices as simple as
Cypress_PSoC
Devices that measure magnetic field strength using the Hall effect
2015. Retrieved 26 May 2015. "I2C Board Mount Hall Effect/Magnetic Sensors (or any other part distributor search for "I2C" and "Hall sensor")". www.mouser
Hall_effect_sensor
Standardized way to automatically access information about a memory module
intervention. The SPD EEPROM firmware is accessed using SMBus, a variant of the I2C protocol. This reduces the number of communication pins on the module to
Serial_presence_detect
3.0, eMMC 4.51, and SDXC Serial I/O supporting SPI, UART (serial port), I2C or PWM Type 3 SoC: DDR3L/L-RS single-channel memory controller supporting
List_of_Intel_Atom_processors
Standard for computer data connections
board area compared to USB 2.0. It is an alternative standard to SPI and I2C. USB-C (officially USB Type-C) is a standard that defines a new connector
USB
Type of standardized secure cryptoprocessors
version 1.2 revision 116 and offered with several interfaces (LPC, SPI, and I2C), modes (FIPS 140-2 certified and standard mode), temperature grades (commercial
Trusted_Platform_Module
Device communications bus system
supply voltage over a single conductor. 1-Wire is similar in concept to I2C, but with lower data rates and longer range. It is typically used to communicate
1-Wire
Family of integrated circuits
Stop mode includes analog comparators, watchdog timers, pulse counters, I2C links, and external interrupts. In Shutoff mode, with 20–100 nA current consumption
EFM32
SDIO 3.01 and eMMC 5.0 Serial I/O supporting SPI, HSUART (serial port) and I2C Lacks AVX, AVX2 and older SSE4.2 instruction sets. All models support: MMX
List of Intel Celeron processors
List_of_Intel_Celeron_processors
Human mitochondrial DNA haplogroup
10.4–14.7 I2 6.8 6.0–7.6 I2a 4.7 3.8–5.7 I2a1 3.2 2.1–4.4 I2b 1.7 0.5–2.9 I2c 4.7 3.6–5.8 I2d 3.0 1.1–4.8 I2e 3.1 1.4–4.8 I3 10.6 8.8–12.4 I3a 7.4 6.1–8
Haplogroup_I_(mtDNA)
Synchronous serial communication interface
potentially interoperate with daisy-chained SPI include SGPIO, JTAG, and I2C. Expander configurations use SPI-controlled addressing units (e.g. binary
Serial_Peripheral_Interface
Digital display interface
for miscellaneous additional data beyond video and audio, such as EDID (I2C) or CEC commands. This bidirectional data channel is required, since the
DisplayPort
Data transfer channel connecting parts of a computer
IEEE-488 (GPIB) IEEE-1284 (parallel port) IEEE-1394 (FireWire) UNI/O 1-Wire I2C (ACCESS.bus, PMBus, SMBus) I3C SPI D²B Parallel SCSI Profibus USB Camera
Bus_(computing)
Daughter card standard specifically tailored to the needs of FPGAs
screws 2.2 mm (0.0866 inch) diameter. It is recommended to have EEPROM with I2C for identification of peripheral module with a specific address number. "SGET
CRUVI_FPGA_card
Low-level protocol used for controlling hardware components
Yes No Platform Level Data Model Yes No NC-SI, Ethernet Yes No USB No Yes I2C/SMBus, I3C (incl. PCIe) No Yes Serial Port No Yes ACPI PCC No Yes UCIe No
Management Component Transport Protocol
Management_Component_Transport_Protocol
Computer device that takes input from humans and gives output to humans
1/30/97. USB Implementer's Forum. 1997. Retrieved 2014-04-28. "HID over I2C". Microsoft. Retrieved 2016-01-19. "Introduction to HID over SPI - Windows
Human_interface_device
Comprehensive list of features of x86-based computers
PORTS.LST 879.133 bytes, 23.893 lines CMOS.LST 77.175 bytes, 2.015 lines I2C.LST 141.061 bytes, 3.563 lines OPCODES.LST 624.174 bytes, 33.936 lines MSR
Ralf_Brown's_Interrupt_List
Collection of Unix tools in single executable file
clock. i2cdetect — Detect i2c devices. i2cdump — Dump i2c registers. i2cget — Read an i2c register. i2cset — Write an i2c register. iconv — Convert character
Toybox
Order of bytes in a computer word
byte ordering. For example, RS-232 transmits bits least significant first, I2C transmits bits most significant first, and SPI can be sent in either order
Endianness
Device used to capture fingerprint pattern
both laptops and smartphones, the fingerprint sensor usually uses a USB or I2C interface internally. Wikimedia Commons has media related to Fingerprint
Fingerprint_scanner
associated with various hardware components, or can be queried through attached I2C buses. It is used by firmware (for example, OpenFirmware) to determine the
Vital_Product_Data
Subfamily of 8-bit AVR microcontrollers
a I2C Master" (PDF). Atmel. 2013. Archived (PDF) from the original on 14 July 2014. Retrieved 10 June 2014. "AVR312: Using the USI module as a I2C slave"
ATtiny microcontroller comparison chart
ATtiny_microcontroller_comparison_chart
general-purpose serial or parallel interface, such as TTL, CMOS, RS-232, SPI, I2C, etc. and generate signals with suitable voltage, current, timing and demultiplexing
Display_driver
Intel chipset
System Management Bus (SMBus) is also provided, with additional support for I2C devices. Overclocking is available for unlocked variants of the supported
Intel_X99
Board for prototype electronic circuits
modulation (PWM; used in motor control), Serial Peripheral Interface (SPI), or I2C. Firmware is then developed for the MCU to test, debug, and interact with
Breadboard
Signal confirming receipt of a message without errors
Communications. 15 (3): 277–290. doi:10.1109/49.564128. "I2C Bus Specification". "Understanding the I2C Bus" (PDF). Figure 8. This article incorporates public
Acknowledgement (data networks)
Acknowledgement_(data_networks)
System-on-a-chip microcontroller model with Wi-Fi
ESP8266 Developer Zone Discussion Forum: Does ESP8266 actually have hardware I2C?". Espressif Systems. 2014-10-27. Retrieved 2017-10-02. Brian Benchoff (October
ESP8266
Failed USB-C alternate mode proposal
TX balanced pair for USB 3.0 data A USB RX balanced pair for USB 3.0 data I2C wire to control the USB Billboard interface, in case the cable is plugged
VirtualLink
Using software instead of dedicated hardware to process and make use of signals
serial Bit banging for Async Serial Communication Bit banging for RS-232 I2C on AVR using bit banging Efficient bit-banged SPI for 8051 microcontroller
Bit_banging
Computer operating system for applications with critical timing constraints
abstracting even further a number of device drivers like External Flash, I2C devices or internal peripherals like UART commands and sleep modes. This
Real-time_operating_system
SDIO 3.01 and eMMC 5.0 Serial I/O supporting SPI, HSUART (serial port) and I2C All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, Enhanced
List of Intel Pentium processors
List_of_Intel_Pentium_processors
Software that hides details of hardware access
joysticks. A Joystick abstraction hides details (e.g., register format, I2C address) so programmers using the abstraction do not need to understand details
Hardware_abstraction
Smartphone with Linux-based mobile operating system
internal flash memory. Another distinctive feature of the PinePhone is the I2C connector under the back cover, which can be used for adding mods to the
PinePhone
Browser-based 3D modeling program
popular components, including the Adafruit Neopixel, Arduino Servo, and I2C display libraries. However, custom libraries cannot be selected or uploaded
Tinkercad
Shopping mall in New South Wales, Australia
"New Lease on Life: Reinvigorating Underperforming Retail Centres | i2C". www.i2c.com.au. Retrieved 7 August 2016. "Work begins on 120 million Marketplace
Lidcombe_Shopping_Centre
Device to measure temperature
packaged in integrated circuits with accompanying ADC and interface such as I2C. Typically they are specified to work within about —50 to 150°C with accuracies
Thermometer
Software design pattern
example of where a facade is used is in register indexed values like Modbus, I2C or Special function register. In this UML class diagram, the Client class
Facade_pattern
One of the two chips in the core logic chipset architecture on a PC motherboard
and mouse, parallel port, serial port, IR port, and floppy controller). I2C and SMBus controller. DMA controller. The 8237 DMA controller allows ISA
Southbridge_(computing)
Hardware monitoring sensors framework
integrated with Dell's ESM, Intelligent Platform Management Interface (IPMI) and I2C, in addition to several popular Super I/O chips through lm(4). A major difference
Hw.sensors
Recording device
preemptive-kernel Linux operating systems with many digital interfaces like I2C, SPI, or UART enable the direct interconnection of a digital sensor and a
Data_logger
Specification for expansion and memory cards
IEEE-488 (GPIB) IEEE-1284 (parallel port) IEEE-1394 (FireWire) UNI/O 1-Wire I2C (ACCESS.bus, PMBus, SMBus) I3C SPI D²B Parallel SCSI Profibus USB Camera
ExpressCard
Small network-layer delivery protocol for cubesats
AT91SAM7A3 processors. From version 1.1 onwards, CSP also includes interfaces for I2C and RS-232. Interfaces need only to implement a function to transmit a packet
Cubesat_Space_Protocol
Series of low-cost single-board computers
Function +3.3 V power 1 2 +5 V power GPIO 2 (I²C SDA) 3 4 +5 V power GPIO 3 (I2C SCL) 5 6 Ground GPIO 4 (GPCLK) 7 8 GPIO 14 (UART TXD) Ground 9 10 GPIO 15
Raspberry_Pi
Video connector by Apple Computer
Reserved 25 26 Video ground/shield (R) 27 Video output (R), 75Ω 28 I2C data signal 29 I2C clock signal 30 Reserved 31 Monitor ID 32 Monitor ID 33 Vertical
HDI-45_connector
Chemical compound
an organoiodine compound with the chemical formula C2I4. Its structure is I2C=CI2. It is an odourless yellow crystalline solid that is soluble in benzene
Tetraiodoethylene
Series of Chinese single-board computers
jack (audio in/out) Expansion Interface 40-pin GPIO (supports GPIO, UART, I2C, SPI, I2S, PWM) Power Supply Type-C PD 20 V IN (standard 65 W) Dimensions
Orange_Pi
Programmable robotics kit
the older Robotics Invention System. The digital interface is capable of I2C and RS-485 communication. Lego Mindstorms NXT 2.0 is the second set in the
Lego_Mindstorms_NXT
Computer expansion bus standard
implements two ×1 PCIe links on a high-density connector along with USB, I2C, and up to 100 points of I/O Universal IO: A variant from Super Micro Computer
PCI_Express
Microprocessor family
Interface Controller channels for software-defined serial interfaces (SPI, UART, I2C, I2S) External bus unit There are "Easy Kits" for evaluation of the controller
XC2000_family
Component that monitors resources in a computer system
motherboards, which can either come as a separate chip, often interfaced through I2C or SMBus, or as part of a Super I/O solution, often interfaced through Low
System_monitor
Italian open-source hardware and software company
available through unofficial channels. The Adafruit Motor Shield V2 uses I2C, requiring vastly fewer digital I/O pins than attaching each motor directly
Arduino
Real-time operating system
Abstraction Layer with support for ADC, CAN, GPT (general-purpose timer), EXT, I2C, ICU, MAC, MMC/SD, PAL, PWM, RTC, SDC, Serial, SPI, and USB drivers. Support
ChibiOS/RT
Operating system
Ethereal from its ports tree prior to its 3.6 release. Added support for I2C master/slave devices Unsupported: 3.7 19 May 2005 The Wizard of OS, where
OpenBSD
Mixed-signal integrated circuit brand
In-System Programmability – can be reprogrammed up to 1000 times using the I2C serial interface. Automotive GreenPAK – allows multiple system functions
GreenPAK
Smartphone electronics product line
IZat Gen8B; NFC, Gigabit Ethernet, HDMI, DisplayPort, SATA, SDIO, UART, I2C, GPIOs, JTAG; USB 3.0/2.0 Snapdragon 810E (APQ8094) 20 nm (TSMC 20SoC) 4
List of Qualcomm Snapdragon systems on chips
List_of_Qualcomm_Snapdragon_systems_on_chips
8-bit microcontroller
ATmega328PB and ATmega328PB-AUTOMOTIVE (superset of ATmega328P) - has more UART, I2C, and SPI peripherals than ATmega328P ATmega328 is commonly used in many projects
ATmega328
Family of microcontrollers
as a I2C Master" (PDF). Atmel. 2013. Archived (PDF) from the original on 2014-07-14. Retrieved 10 June 2014. "AVR312: Using the USI module as a I2C slave"
AVR_microcontrollers
Family of ARM based system-on-a-chips made by Samsung
11b/g/n Single band (2.4 GHz) On-chip Memory: SRAM 1.4 MB Interface: SDIO/ I2C/ SPI/ UART/ PWM/ I2S Front-end Module: Integrated T/R switch, Power Amplifier
Exynos
Device that connects computer front-end hardware to multiple computers
calibration. Microsoft guidelines recommend that KVM switches pass unaltered any I2C traffic between the monitor and the PC hosts, and do not generate HPD events
KVM_switch
Y chromosome haplogroup
Haplogroup I I1 I1a (I-DF29) I-Z17954 I2 I2b (I-L416) I2a (I-L460) I2c (I-L596)
Haplogroup_I-M253
ANSI standard for 8VSB/ATSC smart antennas
ms. The system uses a single wire for communication, possibly similar to I2C. The 10 bits sent back from the antenna are largely unused. Only the first
CEA-909
Multi-tool electronic device
debugging, and fuzz. It is able to function as a USB converter for UART, SPI, or I2C. The built-in GPIO pins connect to hardware, operate by buttons, send out
Flipper_Zero
Single-board microcontroller
ATmega328 also supports I2C and SPI communication. The Arduino software includes the Wire library to simplify use of the I2C bus. Rather than requiring
Arduino_Nano
American financial services company
Tennessee and Virginia. On May 29, 2023, American Banker reported that i2c Inc., a Comerica contractor, conducted Direct Express operations through
Comerica
Microcontroller board for Android applications
digital input/output and analog input, the IOIO library also handles PWM, I2C, SPI, UART, Input capture, Capacitive sensing and advanced motor control
IOIO
configured freely with peripheral functions. Options are CAN, UART, SPI, I2C, GPIOs**, PIOs and SYNC Trigger. The GPIOs from Hilscher are able to generate
Hilscher netx network controller
Hilscher_netx_network_controller
Place in Östergötland, Sweden
paternal haplogroup I2a1 or various subclades of it, while the other carried I2c. With regards to mtDNA, four individuals carried subclades of U5a, while
Motala
Integrated circuits
converters), clock management, and serial communications such as USART, SPI, I2C, CAN, LIN, USB, Ethernet, and LCD, Camera or Touch controllers. Microchip
Atmel_ARM-based_processors
Communication protocols
signal can be sent to or from a video graphics array (VGA) monitor with the I2C protocol using the master's serial clock and serial data pins. DDC1 is a
Display_Data_Channel
Computer system with a dedicated function
interfaces (SCI): RS-232, RS-422, RS-485, etc. Synchronous Serial Interface: I2C, SPI, SSC and ESSI (Enhanced Synchronous Serial Interface) Universal Serial
Embedded_system
Serial Nor FLASH Support 2x8ch I2S/TDM, 1x8ch PDM, 1x2ch I2S/PCM Support SPDIF IN/OUT, HDMI ARC SDIO 3.0, USB 2.0 OTG, USB 2.0 Host, I2C, UART, SPI, I2S
List_of_Rockchip_products
Computer hardware
audio), as well as some instances of many digital control buses such as I2C, SPI, microWire, UART, or GPIO pins on the digital audio components. The
SLIMbus
Piece of read-only-memory used for booting a computer system
flashed over UART, some support USB and eventually other interfaces like e.g. I2C, SPI, or CAN. The Cortex-M core normally fetches vectors from the well-known
Boot_ROM
Low-cost, low-power SoC microcontrollers with Bluetooth and Wi-Fi
(supports SD and SPI mode) LOLIN D32 ESP-WROOM-32 LOLIN D32 Pro ESP32-WROVER I2C port, TFT port and Micro SD Card slot (support SPI mode) Widora Air † Compact
ESP32
Form factor for modules with high computing power
Pins) 1 1 1 SPI (for boot devices) 2 2 2 GP_SPI (includes 4 Chip Select Pins) 1 1 1 I2C 2 2 2 SMB 1 1 1 DC Power Input 8-20 Volt 12 Volt +/- 5% 8-20 Volt
COM-HPC
Open-source electronics prototyping platform
Pulse Width Modulation (PWM) generation, 4 UARTs (serial communication), I2C, and SPI (Serial Peripheral Interface Bus). The Netduino family consists
Netduino
Family of 32-bit microcontroller integrated circuits
Holdings. ARM7TDMI-S Specification Summary; ARM Holdings. "NXP unveils UCODE I2C RFID chip", PC's Semiconductors Blog, April 5, 2011. Retrieved February 2
NXP_LPC
Effort initiated by Shenzhen Libre Technology Co., Ltd."
with 5.x support IR Receiver U-Boot Button 40 Pin Low Speed Header (PWM, I2C, SPI, GPIO) ADC Header Power Enable/On Header The AML-S905X-CC "Le Potato"
Libre_Computer_Project
IP IQ IR IS IT IU IV IW IX IY IZ I – (s) Iodine – One (in Roman numerals) I2C or I-squared-C - (i) Inter-Integrated Circuit I2WD or I2WD – (i) U.S. Intelligence
List_of_acronyms:_I
Topics referred to by the same term
Chiang The Other Half, a replaceable back cover to the Jolla phone using I2C for expansion capabilities The Other Half : Poems, poetry collection by Judith
The_Other_Half
List of MediaTek processors
GPIO, SPI, I2C, UART (x3) MT3339 (now managed and sold to Airoha) ARMv7 ? ARM7EJ-S @ 98 MHz (low power) 8 MB SPI (external) GPS, GPIO, SPI, I2C, UART (x3)
List of MediaTek systems on chips
List_of_MediaTek_systems_on_chips
ANSI/VITA input/output standard
address is 00. Some FMC mezzanine cards may attach other devices to the I2C bus and address them through a system controller, using the geographical
FPGA_Mezzanine_Card
Microcontroller board
R7FA4M1AB; Docs". Renesas. Archived from the original on May 8, 2023. "Qwiic I2C Connect System". SparkFun. Archived from the original on September 7, 2023
Arduino_Uno
Single chip microcontroller series by Intel
program storage, bootloader code in ROM, EEPROM non-volatile data storage, I2C, SPI, and USB host interfaces, CAN or LIN bus, Zigbee or Bluetooth radio
Intel_MCS-51
European miniaturized satellite platform
with FPGA and PIC microcontrollers that control onboard equipment over an i2c bus. Power is provided by one steerable gallium arsenide solar array. Communication
Myriade
I2C
I2C
I2C
I2C
I2C
I2C
I2C
I2C
I2C