UPD16682A Datasheet, PDF (18/55 Pages) NEC – 1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM

µPD16682A
6.4 Line Address Circuit
As is shown in Figure 6–2, the line address circuit specifies the line address that corresponds to a COM output for
displaying the contents of display data RAM. The display start line address set command usually specifies the
highest line in the display (corresponding to the COM0 output when in normal mode or the COM63 output when in
inverted mode). Thus, there are 65 lines in the direction of incrementation of line address starting from the specified
display start line address.
The screen can be scrolled by dynamically changing the line address via the display start line address set
command.
Figure 6–2. Specification of Display Start Line Address in Display Data RAM
Page Address
D3 D2 D1 D0 Data
D0
D1
D2
0 0 0 0 D3
D4
D5
D6
D7
D0
D1
D2
0 0 0 1 D3
D4
D5
D6
D7
D0
D1
D2
0 0 1 0 D3
D4
D5
D6
D7
D0
D1
D2
0 0 1 1 D3
D4
D5
D6
D7
D0
D1
D2
0 1 0 0 D3
D4
D5
D6
D7
D0
D1
D2
0 1 0 1 D3
D4
D5
D6
D7
D0
D1
D2
0 1 1 0 D3
D4
D5
D6
D7
D0
D1
D2
0 1 1 1 D3
D4
D5
D6
D7
1 0 0 0 D0
Page0
Page1
Page2
Page3
Page4
Page5
Page6
Page7
Page8
Line
Address
Common output status :
Normal mode
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
1BH
1CH
1DH
1EH
1FH
20H
21H
22H
23H
24H
25H
26H
27H
28H
29H
2AH
2BH
2CH
2DH
2EH
2FH
30H
31H
32H
33H
34H
35H
36H
37H
38H
39H
3AH
3BH
3CH
3DH
3EH
3FH
Start
COM
Output
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
COM17
COM18
COM19
COM20
COM21
COM22
COM23
COM24
COM25
COM26
COM27
COM28
COM29
COM30
COM31
COM32
COM33
COM34
COM35
COM36
COM37
COM38
COM39
COM40
COM41
COM42
COM43
COM44
COM45
COM46
COM47
COM48
COM49
COM50
COM51
COM52
COM53
COM54
COM55
COM56
COM57
COM58
COM59
COM60
COM61
COM62
COM63
COMS ^Note
Note COMS accesses the 65th line regardless of the display start line address.
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Data Sheet S14402EJ1V0DS