RM0312 datasheet(171/275 Pages) STMICROELECTRONICS

171 / 275 page

DocID022352 Rev 3

171/275

RM0312

Inter-integrated circuit (I2C) interface

200

Inter-integrated circuit (I2C) interface

19.1

Introduction

I2C (inter-integrated circuit) bus interface serves as an interface between the microcontroller

and the serial I2C bus. It provides multi-master capability, and controls all I2C bus-specific

sequencing, protocol, arbitration and timing. It supports standard and fast speed modes.

19.2

I2C main features

•

Parallel-bus/I2C protocol converter

•

Multi-master capability: the same interface can act as Master or Slave

•

I2C Master features:

–

Clock generation

–

Start and Stop generation

•

I2C Slave features:

–

Programmable I2C Address detection

–

Stop bit detection

–

I²C dual addressing capability to acknowledge 2 slave addresses

•

Generation and detection of 7-bit/10-bit addressing and general call

•

Supports different communication speeds:

–

Standard speed (up to 100 kHz),

–

Fast speed (up to 400 kHz)

•

Status flags:

–

Transmitter/receiver mode flag

–

End-of-byte transmission flag

–I2C busy flag

•

Error flags:

–

Arbitration lost condition for master mode

–

Acknowledgement failure after address/ data transmission

–

Detection of misplaced start or stop condition

–

Overrun/underrun if clock stretching is disabled

•

3 types of interrupts:

–

1 communication interrupt

–

1 error condition interrupt

–

1 wakeup from Halt interrupt

•

Wakeup capability:

–

MCU wakes up from Low power mode on address detection in slave mode.

•

Optional clock stretching

RM0312 Datasheet(PDF) 171 Page - STMicroelectronics

RM0312 Datasheet(HTML) 171 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Descarga

Enlace URL