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HD66420 Datasheet, PDF (31/52 Pages) Hitachi Semiconductor – (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
Y address
H’00
Display
RAM
Start line R5
R5+7
ABCD
LCD panel
ABCD
R11 = H’04
H’4F
Figure 17 Partial Display
HD66420
COM1
COM33
COM40
COM80
COM41
31