HD66421 Datasheet, PDF (17/46 Pages) Hitachi Semiconductor – (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)

Preliminary
LCD panel
LCD panel
Rev. 1.1E '99.02.10
HD66421
Y0 _{1 1 1 0 0 1 0 0}
Y1 0 0 0 1 1 0 1 1
DDDDDD DD
BBBBBB BB
765432 10
Display RAM
Display RAM
1 1 1 0 0 1 0 0 ^Y0
0 0 0 1 1 0 1 1 Y1
D DDDDDDD
B BBBBBBB
0 1234567
(a) MON = 1, ADC = 0, WLS= 0
(b) MON = 1, ADC = 1, WLS= 0
Figure 9 Display RAM Data and Display in Monochrome Mode
SEG1
H'00
H'01
LCD drive signal output
SEG160 SEG1
H'00
H'01
LCD drive signal output
SEG160
H'62
H'63
H'0
MSB
H'2
X address
(a) MON = 1, ADC = 0
H'62
H'63
H'26
H'26 H'24
H'0
X address
MSB
(b) MON = 1, ADC = 1
Figure 10 Display RAM Configuration in Monochrome Mode
17