CHA
PTER 13 LCD CONTROLLER/DRIVER
252
User’s Manual U15331EJ4V1UD
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
FA1BH
LCDON0
S27
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
FA0FH
LCDON0
S15
LCDCL
LIPS0
GAIN
V
LC2
CAPH CAPL
V
LC1
VAON0
3 2 1 0
3 2 1 0
6 5
7
4
FA10H
LCDON0
S16
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
........
........
........
........
........
........
........
........
........
........
........
........
........
........
.......
.........
. . . . . . . . .
. . . . . . . . .
Segment
driver
Segment
driver
Segment
driver
Segment
driver
Selector
Selector
Selector
Selector
Selected by mask option
or port function register
Display data memory
Internal bus
LCD voltage boost
control register 0 (LCDVA0)
Timing
controller
Figure 13-2. LCD Controller/Driver Block Diagram