Electronics America Single-Chip Microcontrollers User's Manual

CHAPTER 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
3210
32106574
FA00H
LCDON0
3210
32106574
FA1BH
LCDON0
S27
f X /2
5
f X /2
6
f X /2
7
f XT
S0
f LCD
3210
32106574
FA0FH
LCDON0
S15
LCDCL
LIPS0
GAIN
V LC2
CAPH
CAPL
V LC1
VAON0
3210
32106574
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
........
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. . . . . . . . . . . . . . . . . .
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