Supplying Lcd Drive Voltage; Lc0 Lc1 , And - NEC mPD780852 Series Preliminary User's Manual

16.7 Supplying LCD Drive Voltage V
The µ PD780852 Subseries have a split resistor to create an LCD drive voltage, and the drive voltage is fixed
to 1/3 bias.
To supply various LCD drive voltages, internal V
Figure 16-8 shows an example of supplying an LCD drive voltage from an internal source according to Table
16-5. By using variable resistors r
216
CHAPTER 16 LCD CONTROLLER/DRIVER
, V , and V
LC0 LC1 LC2
or external V
DD
Table 16-5. LCD Drive Voltage
Bias Method 1/3 Bias Method
LCD Drive Voltage
V V
LC0
V 2/3V
LC1
V 1/3V
LC2
and r , a non-stepwise LCD drive voltage can be supplied.
1 2
Preliminary User's Manual U14581EJ3V0UM00
supply voltage can be selected.
LCD
LCD
LCD
LCD