R01UH0822EJ0100 Rev.1.00
Page 726 of 1041
Jul 31, 2019
RX13T Group
24. I
2
C-bus Interface (RIICa)
Figure 24.2
I/O Pin Connection to the External Circuit (I
2
C-bus Configuration Example)
The input level of the signals for RIIC is CMOS when I
2
C-bus is selected (ICMR3.SMBS bit is 0), or TTL when SMBus
is selected (ICMR3.SMBS bit is 1).
Table 24.2
RIIC Pin Configuration
Channel
Pin Name
I/O
Function
RIIC0
SCL0
I/O
RIIC0 serial clock I/O pin
SDA0
I/O
RIIC0 serial data I/O pin
Power supply for pull-up (VCC to 5 V)
SCL
SDA
(Master)
(Slave 1)
SCL
SDA
(Slave 2)
SCL
SDA
SCL
SDA
SCLin
SDAin
SCLout#
SDAout#
SCLin
SDAin
SCLout#
SDAout#
SCLin
SDAin
SCLout#
SDAout#