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18.1.3
Pin Configuration
Table 18-1 shows the LCD controller/driver pin configuration.
Table 18-1 Pin Configuration
Name
Abbreviation
Segment output
SEG24 to SEG1
pins
(H8S/2646,
H8S/2646R,
H8S/2645)
SEG40 to SEG1
(H8S/2648,
H8S/2648R,
H8S/2647)
Common output
COM4 to COM1
pins
LCD power supply
V1, V2, V3
pins
18.1.4
Register Configuration
Table 18-2 shows the register configuration of the LCD controller/driver.
Table 18-2 LCD Controller/Driver Registers
Name
LCD port control register
LCD control register
LCD control register 2
LCD RAM
Module stop control
register D
Note:
*1 Lower 16 bits of the address.
I/O
Function
Output
LCD segment drive pins
All pins are multiplexed as port pins (setting
programmable)
Output
LCD common drive pins
Pins can be used in parallel with static or 1/2 duty
—
Used when a bypass capacitor is connected
externally, and when an external power supply
circuit is used
Abbreviation
R/W
LPCR
R/W
LCR
R/W
LCR2
R/W
—
R/W
MSTPCRD
R/W
Initial Value
Address
H'00
H'FC30
H'80
H'FC31
H'60
H'FC32
Undefined
H'FC40 to H'FC53
B'11******
H'FC60
*1
633
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