UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 215

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

14.7 Supplying LCD Drive Voltages V
for generating LCD drive power as specified using a mask option. Incorporating voltage divider resistors can generate
LCD drive voltages that meet each bias method listed in Table 14-6, without using external voltage divider resistors.
LCD Drive Voltage Pin
V
V
V
LC0
LC1
LC2
The mask ROM versions (except the PD78F9418A) of the LCD display can incorporate voltage divider resistors
The LCD drive voltage can be supplied to the BIAS pin to support various LCD drive voltage levels.
Note For the 1/2 bias method, it is necessary to connect the V
Remarks 1. If the BIAS and V
Figure 14-8 shows examples of generating LCD drive voltages internally according to Table 14-6.
2. If the BIAS and V
Table 14-6. LCD Drive Voltages (with On-Chip Voltage Divider Resistors)
Bias Method
LC0
LC0
CHAPTER 14 LCD CONTROLLER/DRIVER
pins are open, V
pins are connected, V
No Bias (Static)
LC0
User’s Manual U13952EJ3V1UD
2
3
1
3
, V
V
LCD
V
V
LCD
LCD
LC1
, and V
LCD
=
LCD
3
5
LC2
V
= V
DD
LC1
(if voltage divider resistors are included).
DD
.
1/2 Bias Method
and V
1
2
V
V
LC2
LCD
LCD
Note
pins externally.
1/3 Bias Method
2
3
1
3
V
LCD
V
V
LCD
LCD
213