M16C6K9 Datasheet, PDF (204/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6K9 Group
MULTI-MASTER I²C-BUS Interface
(1) A master-transmitter transmits data to a slave-receiver
S
Slave address R/W A
Data A
Data A/A P
7 bits
“0”
1 - 8 bits
1 - 8 bits
(2) A master-receiver receives data from slave-transmitter
S
Slave address R/W A
Data A
Data
AP
7 bits
“1”
1 - 8 bits
1 - 8 bits
(3) A master-transmitter transmits data to a slave-receiver with a 10-bit address
S
Slave address
1 st 7 bits
7 bits
R/W
“0”
A
Slave address
2nd byte
8 bits
A Data A
1 - 8 bits
Data A/A P
1 - 8 bits
(4) A master-receiver receives data from slave-transmitter with a 10-bit address
S
Slave address
1 st 7 bits
7 bits
R/W
A
Slave address
2nd byte
“0”
8 bits
A
Sr
Slave address
1 st 7 bits
7 bits
S : START condition
A : ACK bit
Sr : Restart condition
P : STOP condition
R/W : Read/Write bit
R/W A
Data
A
Data A P
“1”
1 - 8 bits
1 - 8 bits
Fig.GC-21 Address data communication format
Rev.1.00 Jun 06, 2003 page 204 of 290