ST72321R7-Auto datasheet(155/243 Pages) STMICROELECTRONICS

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ST72321xx-Auto

I2C bus interface (I2C)

Doc ID 13829 Rev 1

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I2C bus interface (I2C)

16.1

Introduction

The I2C bus interface serves as an interface between the microcontroller and the serial I2C

bus. It provides both multimaster and slave functions, and controls all I2C bus-specific

sequencing, protocol, arbitration and timing. It supports fast I2C mode (400 kHz).

16.2

Main features

●

Parallel-bus/I2C protocol converter

●

Multimaster capability

●

7-bit/10-bit addressing

●

SMBus V1.1 compliant

●

Transmitter/Receiver flag

●

End-of-byte transmission flag

●

Transfer problem detection

16.2.1

I2C master features

●

Clock generation

●

I2C bus busy flag

●

Arbitration Lost flag

●

End of byte transmission flag

●

Transmitter/Receiver flag

●

Start bit detection flag

●

Start and Stop generation

16.2.2

I2C slave features

●

Stop bit detection

●

I2C bus busy flag

●

Detection of misplaced start or stop condition

●

Programmable I2C address detection

●

Transfer problem detection

●

End-of-byte transmission flag

●

Transmitter/Receiver flag

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