Lcd Controller/Driver; Fig. 2.21 Lcd Controller /Driver Block Diagram - Fujitsu F2MC-8L Family series Hardware Manual

Peripherals
Main clock
Prescaler
Internal
bus
HARDWARE CONFIGURATION

2.2.7 LCD Controller/driver

The LCD controller/driver consists of the display controller that generates
segment and common signals according to the display data and memory
data, and the segment and common drivers that can drive the LCD panel
directly.
• Direct LCD driving
• 4 common outputs (COM0 to COM3) and 42 segment outputs (SEG0 to
SEG41)
• 21-byte display data memory
• 1/2, 1/3, or 1/4 selected as duty.
• SEG20 to SEG41 can be used as general-purpose ports (option).
(1) Block diagram
LCD control register
(LCDR)
Timing
controller
RAM for display
(21 bytes)
Controller

Fig. 2.21 LCD Controller /Driver Block Diagram

Power supply (V1 to V3)
4
Circuit
commutating
to AC
42
2– 59
COM0
Common COM1
driver
COM2
COM3
SEG00
SEG01
SEG02
SEG03
SEG04
Segment
:
:
driver
:
:
SEG37
SEG38
SEG39
SEG40
SEG41
Driver