CHAPTER 13 LCD CONTROLLER/DRIVER
User’s Manual
U15075EJ2V1UD
252
LCDC03 LCDC02 LCDC01 LCDC00
2
2
f
LCD
2
6
f
LCD
2
7
f
LCD
2
8
f
LCD
2
9
LCDON0
VAON0
V
LC0
COM0 COM1 COM2 COM3
3 2 1 0
3 2 1 0
6 5
7
4
FA00H
LCDON0
3 2 1 0
3 2 1 0
6 5
7
4
FA0EH
LCDON0
S14
f
X
/2
5
f
X
/2
6
f
X
/2
7
f
XT
S0
f
LCD
3 2 1 0
3 2 1 0
6 5
7
4
FA04H
LCDON0
S4
LCDCL
LIPS0
GAIN
V
LC2
CAPH CAPL
V
LC1
VAON0
3 2 1 0
3 2 1 0
6 5
7
4
FA05H
LCDON0
S5
LCDM00
LCD clock control
register 0 (LCDC0)
LCD display mode
register 0 (LCDM0)
LCD
clock
selector
Clock
generator for
boosting
Selector
Prescaler
Booster circuit
Segment voltage
controller
Common voltage
controller
Common driver
........
........
........
........
........
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.......
.........
. . . . . . . . .
. . . . . . . . .
Segment
driver
Segment
driver
Segment
driver
Segment
driver
Selector
Selector
Selector
Selector
PD789446, 789456
Subseries only
Display data memory
Internal bus
LCD voltage boost
control register 0 (LCDVA0)
Timing
controller
µ
Figure 13-1. Block Diagram of LCD Controller/Driver