XC167-16 Datasheet, PDF (323/442 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC167-16 Derivatives
Peripheral Units (Vol. 2 of 2)
IIC-Bus Module
21.7
IIC-Bus Overview
Figure 21-8 gives a brief overview of the major definitions of the IIC-Bus operation.
Normal Data Transfer
SCL
SDA
Start and Stop Conditions
SCL
Data Stable
SDA
Start
Address and Acknowledge
SCL
1^st
SDA
Transmitter
A6
SDA
Receiver
Start
Clock Synchronization
SCL Master A
Stop
2^nd
8^th
9^th
A5
A4 A0 R/W
ACK Bit
SCL Master B
External SCL
Master Arbitration
SCL
SDA
Master A & B
A6
Master A
A5
A4
Figure 21-8 IIC-Bus Characteristics
Master B lost arbitration
A3
A2
MCT05470
User’s Manual
IIC_X, V2.0
21-22
V2.0, 2004-04