hd66420 Renesas Electronics Corporation., hd66420 Datasheet - Page 47
hd66420
Manufacturer Part Number
hd66420
Description
Ram-provided 160 Channel 4-level Grey Scale Driver For Dot Matrix Graphics Lcd
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66420.pdf
(52 pages)
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Table 8 Grayscale Levels
GP14
GP24
GP34
GP44
0
Table 9 LCD alternative drive cycle
CM1
0
0
0
0
GP13
GP23
GP33
GP43
0
1
Set value
Data bit
GP12
GP22
GP32
GP42
0
1
0
1
GP11
GP21
GP31
GP41
0
1
0
1
0
1
0
1
Figure 37 Contrast Control register (R16)
7
GP10
GP20
GP30
GP40
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CM0
0
0
0
0
CM1
6
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
CM0
5
GP14
GP24
GP34
GP44
1
CC4
4
GP13
GP23
GP33
GP43
0
1
CC3
3
Alternative Cycle
Frame
7 lines
11 lines
13 lines
GP12
GP22
GP32
GP42
0
1
0
1
CC2
2
GP11
GP21
GP31
GP41
0
1
0
1
0
1
0
1
CC1
1
GP10
GP20
GP30
GP40
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CC0
0
HD66420
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
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