I2c
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View I2c as PDF for free.
More details
- Words: 147
- Pages: 5
I2C Communication Protocol (I2C/IIC/TWI) Inter Integrated Circuit bus
Introduction
Invented by Philips in order to attach low speed peripherals. Two wire interface (Serial Data-SDA, Serial Clock-SCL). 7-Bit addressing space. Master-slave operation. 10 KHz Low Speed, 100 KHz Standard Speed, 400 KHz Fast Mode, 3.4 High Speed Mode) Multiple devices on the same bus.
Operation Modes
Master Device:
Slave Device:
Master transmit. Master receive. Slave transmit. Slave receive.
Multiple masters possible.
The Communication Protocol
Write to device:
Send Start Sequence Write I2C device address (R/W Bit Low) Write device register address Send data byte Send stop sequence
Read from device:
Send Start Sequence Write I2C device address (R/W Bit High) Write device register address Resend Start Sequence Write device Send stop sequence
Communication Example
Introduction
Invented by Philips in order to attach low speed peripherals. Two wire interface (Serial Data-SDA, Serial Clock-SCL). 7-Bit addressing space. Master-slave operation. 10 KHz Low Speed, 100 KHz Standard Speed, 400 KHz Fast Mode, 3.4 High Speed Mode) Multiple devices on the same bus.
Operation Modes
Master Device:
Slave Device:
Master transmit. Master receive. Slave transmit. Slave receive.
Multiple masters possible.
The Communication Protocol
Write to device:
Send Start Sequence Write I2C device address (R/W Bit Low) Write device register address Send data byte Send stop sequence
Read from device:
Send Start Sequence Write I2C device address (R/W Bit High) Write device register address Resend Start Sequence Write device Send stop sequence
Communication Example
Related Documents
I2c
July 2020 5
I2c Bus
November 2019 17
Xapp333 ( I2c )
May 2020 6
I2c Guides
July 2020 12
I2c-2
October 2019 13