Philips I2C Bus Specification

This document details the Philips I2C bus specification, covering version history, transmission mechanisms, addressing formats, and electrical requirements…


Philips I2C Bus Specification - cover page
Brand
Philips
Category
Other Electronics
Document type
Datasheet
Language
Chinese
Pages
38
File format
PDF
File size
847 KB
Published
26 October, 2026
Updated
26 October, 2026
Model
I2C
MD5 checksum
F161B84DBD891AE2A3426B8F7A6F6C28

About this manual

This document is the official specification for the I2C (Inter-Integrated Circuit) bus, developed by Philips. It explains how the two-wire serial bus enables communication between integrated circuits in consumer electronics, telecommunications, and industrial applications. The specification covers the benefits for designers and manufacturers, including reduced pin counts and simplified PCB design. This manual is written in Chinese.

What's inside

  • I2C Bus Versions
  • Bus Characteristics
  • Bit Transmission
  • Addressing Formats
  • Fast Mode
  • High-Speed Mode
  • Electrical Specifications
  • Application Information

Specifications

Standard Mode Bit Rate100kbit/s
Fast Mode Bit Rate400kbit/s
High-Speed Mode Bit Rate3.4Mbit/s
Maximum Bus Capacitance400pF
Number of Bus LinesTwo (SDA and SCL)

Frequently asked questions

What are the different I2C bus modes mentioned?

The document describes Standard Mode (100kbit/s), Fast Mode (400kbit/s), and High-Speed Mode (3.4Mbit/s).

What is the maximum number of devices allowed on the I2C bus?

The number of devices is limited by the maximum bus capacitance of 400pF.

Who developed the I2C bus specification?

The I2C bus was developed by Philips.

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