694
SCL
in
SCL
out
SDA
in
SDA
out
(Slave 1)
SCL
SDA
SCL
in
SCL
out
SDA
in
SDA
out
(Slave 2)
SCL
SDA
SCL
in
SCL
out
SDA
in
SDA
out
(Master)
H8S/2633 Series chip
SCL
SDA
V
DD
PVCC2
SCL
SDA
Figure 18-2 I
2
C Bus Interface Connections (Example: H8S/2633 Series Chip as Master)
18.1.3
Input/Output Pins
Table 18-1 summarizes the input/output pins used by the I
2
C bus interface.
Table 18-1 I
2
C Bus Interface Pins
Channel
Name
Abbreviation
I/O
Function
0
Serial clock
SCL0
I/O
IIC0 serial clock input/output
Serial data
SDA0
I/O
IIC0 serial data input/output
1
Serial clock
SCL1
I/O
IIC1 serial clock input/output
Serial data
SDA1
I/O
IIC1 serial data input/output
Note:
In the text, the channel subscript is omitted, and only SCL and SDA are used.