UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 700

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

698
Common Signal
V
Common Signal
Select signal level
Deselect signal level
LC0
(3)
/V
SS
Output waveforms of common signals and segment signals during LCD display signal output period
The voltages shown in Table 17-4 are output to the common signals and segment signals during the LCD
display signal output period.
When both common and segment signals are at the select voltage, a display on-voltage of V
The other combinations of the signals correspond to the display off-voltage.
(a) Static display mode (during LCD display signal output period)
Segment Signal
Segment Signal
(b) 1/3 bias method (during LCD display signal output period)
V
V
LC0
LC2
/V
/V
SS
LC1
CHAPTER 17 LCD CONTROLLER/DRIVER
–V
–V
–
Preliminary User’s Manual U19748EJ1V0UD
Table 17-4. LCD Drive Voltage
1
3
LCD
LCD
V
/+V
/+V
LCD
/+
LCD
LCD
Select Signal Level
Select Signal Level
1
3
V
LCD
V
V
SS
SS
/V
/V
LC0
LC0
0 V/0 V
–
+
1
3
1
3
V
V
LCD
LCD
/+
/–
Deselect Signal Level
Deselect Signal Level
1
3
1
3
V
V
LCD
LCD
V
V
LC1
LC0
/V
/V
LC2
SS
LCD
is obtained.