I2C
E203934
multi-master bus
multi-slave bus
serial communication bus
synchronous communication protocol
two-wire bus
I2C is a widely used two-wire serial communication bus that enables simple, low-speed data exchange between microcontrollers and peripheral devices on the same circuit board.
All labels observed (5)
| Label | Occurrences |
|---|---|
| I2C canonical | 7 |
| I²C | 3 |
| HID over I2C | 1 |
| IIC | 1 |
| Inter-Integrated Circuit | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1832657 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: I2C Context triple: [Calliope mini, supportsCommunicationProtocol, I2C]
-
A.
I2O
I2O is the acronym for DARPA’s Information Innovation Office, which focuses on advancing cutting-edge information science and technology for national security.
-
B.
Cbus
Cbus is a common nickname for Columbus, the capital and largest city of Ohio.
-
C.
MOSI
MOSI is a major science and technology museum known for its interactive exhibits and educational programs that promote public engagement with science and industry.
-
D.
CAN
CAN is the standard international abbreviation for the Canada men's national ice hockey team, one of the most successful and historically dominant teams in world ice hockey.
-
E.
CAN
CAN is the three-letter IATA airport code for Guangzhou Baiyun International Airport, a major air transport hub in southern China.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: I2C Target entity description: I2C is a widely used two-wire serial communication bus that enables simple, low-speed data exchange between microcontrollers and peripheral devices on the same circuit board.
-
A.
I2O
I2O is the acronym for DARPA’s Information Innovation Office, which focuses on advancing cutting-edge information science and technology for national security.
-
B.
Cbus
Cbus is a common nickname for Columbus, the capital and largest city of Ohio.
-
C.
MOSI
MOSI is a major science and technology museum known for its interactive exhibits and educational programs that promote public engagement with science and industry.
-
D.
CAN
CAN is the standard international abbreviation for the Canada men's national ice hockey team, one of the most successful and historically dominant teams in world ice hockey.
-
E.
CAN
CAN is the three-letter IATA airport code for Guangzhou Baiyun International Airport, a major air transport hub in southern China.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
multi-master bus
ⓘ
multi-slave bus ⓘ serial communication bus ⓘ synchronous communication protocol ⓘ two-wire bus ⓘ |
| addressingMode |
10-bit addressing
ⓘ
7-bit addressing ⓘ |
| alsoKnownAs |
IIC
ⓘ
linked to:
I2C
I²C ⓘ
linked to:
I2C
|
| bitOrder | MSB first ⓘ |
| clocking | synchronous ⓘ |
| competesWith |
SPI
ⓘ
UART ⓘ |
| dataDirectionControl | master-driven clock ⓘ |
| dataTransferMode | half-duplex ⓘ |
| developedBy |
NXP Semiconductors
ⓘ
Philips Semiconductors ⓘ
linked to:
NXP Semiconductors
|
| errorDetection | ACK/NACK mechanism ⓘ |
| fastModePlusSpeed | 1 Mbit/s ⓘ |
| fastModeSpeed | 400 kbit/s ⓘ |
| fullName |
Inter-Integrated Circuit
ⓘ
linked to:
I2C
|
| highSpeedMode | 3.4 Mbit/s ⓘ |
| intendedUse |
communication between microcontrollers and peripherals
ⓘ
on-board communication ⓘ |
| numberOfWires | 2 ⓘ |
| physicalLayer |
open-collector outputs
ⓘ
open-drain outputs ⓘ |
| requires | pull-up resistors ⓘ |
| scope | short-distance on-board communication ⓘ |
| signalType |
bidirectional data line
ⓘ
unidirectional clock line ⓘ |
| standardizedBy | NXP I2C-bus specification ⓘ |
| standardSpeed | 100 kbit/s ⓘ |
| startCondition | SDA falling while SCL high ⓘ |
| stopCondition | SDA rising while SCL high ⓘ |
| supports |
multiple masters
ⓘ
multiple slaves ⓘ |
| supportsFeature |
acknowledge bit
ⓘ
arbitration between masters ⓘ clock stretching ⓘ repeated start condition ⓘ |
| topology | bus ⓘ |
| typicalUseCase |
EEPROM communication
ⓘ
RTC communication ⓘ display control ⓘ sensor interfacing ⓘ |
| ultraFastMode | 5 Mbit/s ⓘ |
| usesLine |
SCL
ⓘ
SDA ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: I2C Description of subject: I2C is a widely used two-wire serial communication bus that enables simple, low-speed data exchange between microcontrollers and peripheral devices on the same circuit board.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: I2C
linked to: I2C
subject linked to:
SERCOM (configurable serial communication modules)
subject linked to:
SERCOM (configurable serial communication modules)
linked to: I2C