User’s Manual U18438EJ2V0UD
50
CHAPTER 4 I
2
C COMMUNICATIONS
Setting of LCD controller/driver in the
µ
PD71312 is performed by communication of the I
2
C bus interface.
The outline of communication is as follows.
•
Communication pins: SCL, SDA
•
Communication function: Slave transmission/reception
4.1 System Configuration
The system configuration of the LCD controller/driver is illustrated in Figure 4-1.
Figure 4-1. System Configuration
µ
PD71312
Serial clock
Serial data bus
V
DD
V
DD
SDA
SCL
78K0/Kx2
78K0R/Kx3
SDA0
SCL0
Caution
Only communication with IIC0 of the 78K0/Kx2 and 78K0R/Kx3 is possible.
It does not support the simplified IIC of the 78K0R/Kx3.