I2C Communication Protocol

Table of contents

Introduction

• I2C - Inter Integrated Circuits
• Multimaster
• Half duples
• Modes
  • standard: up to 100 kbps
  • fast: up to 400 kbps
  • fast+: up to 1 Mbps
  • high speed: up to 3.4 Mbps
• tradeoff speed and power dissipation

Pros

• need only two wires
• multi-master compatibility
• better error handling
• different mode flexibility for slave

Cons

• less flexibility for slave address
  • defined by the device manufacturer
• complexity of firmware
  • bus arbitration
  • clock stretching
• increased data overhead
• hardware limitation
  • clock speed
  • power dissipation
• bus topology

References