tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 276

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18.1 Communication Format
18. Serial Bus Interface (SBI)
RA001
18.1.2 Free data format
The free data format is for communication between a master and slave.
In the free data format, the slave address and the direction bit are processed as data.
(a) Addressing format
(b) Addressing format (with restart)
S
R/W
ACK
P
S
S
(a) Free data format
Slave address
Slave address
: Start condition
: Direction bit
: Acknowledge bit
: Stop condition
S
R/W
ACK
P
S
8 bits
8 bits
1
1
Figure 18-2 Data Format of I
: Start condition
: Direction bit
: Acknowledge bit
: Stop condition
Figure 18-3 Free Data Format
Data
W
8 bits
W
R
R
/
/
C
1
A
C
K
1
A
K
1
1 to 8 bits
1 to 8 bits
1 or more
Data
Data
C
1
A
K
Page 262
1 to 8 bits
Data
1 or more
C
A
C
K
1
A
K
1
S
1 or more
1 to 8 bits
Slave address
Data
1
A
C
K
8 bits
1
2
C Bus
1 to 8 bits
Data
W
1
C
R
A
K
/
C
P
1
A
K
1 to 8 bits
1
A
C
K
1 or more
Data
P
1
A
C
K
P
TMP89FM42