Figure 13.4 Examples Of Lcd Power Supply Pin Connections - Renesas H8/3847R Series Hardware Manual

Section 13 LCD Controller/Driver
d. LCD drive power supply setting
With this LSI, there are two ways of providing LCD power: by using the on-chip power
supply circuit, or by using an external circuit.
When the on-chip power supply circuit is used for the LCD drive power supply, the V
V pins should be interconnected externally, as shown in figure 13.4 (a).
1
When an external power supply circuit is used for the LCD drive power supply, connect the
external power supply to the V
figure 13.4 (b).
V
CC
V
V
V
V
V
SS
(a) Using on-chip power supply circuit

Figure 13.4 Examples of LCD Power Supply Pin Connections

e. Low-power-consumption LCD drive system
Use of a low-power-consumption LCD drive system enables the power consumption
required for LCD drive to be optimized. For details, see section 13.3.4, Low-Power-
Consumption LCD Drive System.
f. External expansion of segment
Segment can be expanded by externally connecting the HD66100. For details, see section
13.3.7, Connection to HD66100.
Rev. 6.00 Aug 04, 2006 page 442 of 680
REJ09B0145-0600
pin, and short the V
1
0
1
2
3
pin to V
0
V
CC
V
V
V
V
V
SS
(b) Using external power supply circuit
externally, as shown in
CC
0
External power supply
1
2
3
and
0