Iic Communication; Format - Panasonic MN101L Series User Manual

Chapter 13
Serial Interface

13.5 IIC Communication

This section describes IIC communication.
The index "n" of interface denotes "n = 2, 3", unless otherwise noted.
When executing IIC communication with SCIFn, set SCnMD3.SCnCMD to "1".
13.5.1

Format

Transfer Format
SCIFn supports "7-bit addressing format" in which 7-bit slave addresses are sent following a start condition
Master
transmission
Master
reception
Slave
transmission
Slave
reception
XIII - 56 IIC Communication
XXXXXXX
Start
Slave address
R/W
condition
XXXXXXX
Start
Slave address R/W
condition
XXXXXXX
Start
Slave address R/W
condition
XXXXXXX
Start
Slave address R/W
condition
Figure:13.5.1 Communication Sequence in 7-bit Addressing Format
0
__
ACK ACK
Data
1
__
ACK
Data
NACK
1
__
ACK NACK
Data
0
__
ACK ACK
Data
Data from other IIC
Stop
condition
Stop
condition
Stop
condition
Stop
condition