HD66420 Datasheet, PDF (47/52 Pages) Hitachi Semiconductor – (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)

Table 8 Grayscale Levels
GP14
GP24
GP34
GP44
0
GP13
GP23
GP33
GP43
0
1
GP12
GP22
GP32
GP42
0
1
0
1
GP11
GP21
GP31
GP41
0
1
0
1
0
1
0
1
GP10
GP20
GP30
GP40
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Gray
scale
Level
0
1/31
2/31
3/31
4/31
5/31
6/31
7/31
8/31
9/31
10/31
11/31
12/31
13/31
14/31
15/31
HD66420
GP14
GP24
GP34
GP44
1
GP13
GP23
GP33
GP43
0
1
GP12
GP22
GP32
GP42
0
1
0
1
GP11
GP21
GP31
GP41
0
1
0
1
0
1
0
1
GP10
GP20
GP30
GP40
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Gray
scale
Level
16/31
17/31
18/31
19/31
20/31
21/31
22/31
23/31
24/31
25/31
26/31
27/31
28/31
29/31
30/31
1
Table 9 LCD alternative drive cycle
CM1
0
0
0
0
CM0
0
0
0
0
Alternative Cycle
Frame
7 lines
11 lines
13 lines
Data bit
Set value
7
6
5
4
3
2
1
0
CM1 CM0 CC4 CC3 CC2 CC1 CC0
Figure 37 Contrast Control register (R16)
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