hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 18

• Manufacturer Part Number: hd66712u
• Description: Dot-matrix Liquid Crystal Display Controller/driver - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

2-line display (N = 1, and NW = 0)
Case 1: The first line is displayed from COM1 to COM16, and the second line is displayed from
COM17 to COM32. Note that the last address of the first line and the first address of the second
line are not consecutive. Figure 5 shows an example where a 5-dot font-width 24
is performed using one HD66712. Here, COM9 to COM16 begins at (0C)H, and COM25 to
COM32 at (4C)H. When a display shift is performed, the DDRAM addresses shift as shown.
Figure 6 shows an example where a 6-dot font-width 20 2-line display is performed using one
HD66712. COM9 to COM16 begins at (0A)H, and COM25 to COM32 at (4A)H.
COM1 to
COM8
COM17 to
COM24
COM1 to
COM1
COM8
COM17 to
COM1
COM24
COM1 to
COM8
COM17 to
COM24
COM1 to
COM8
COM17 to
COM24
Figure 5 2-Line by 24-Character Display (5-Dot Font Width)
Figure 6 2-Line by 20-Character Display (6-Dot Font Width)
00 01 02 03 04
40 41 42 43 44
01 02 03 04 05
41 42 43 44 45
27 00 01 02 03
67 40 41 42 43
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
00 01 02 03 04
40 41 42 43 44
1 2 3 4 5 6 7 8
05
45
06
46
04
44
06
46
07
47
05
45
07
47
08
48
06
46
05
45
08
48 49 4A 4B
09
49 4A 4B 4C
07
47 48 49 4A
9
9
06
46
10
09
10
0A
08
07
47
11
11
0A 0B
0B
09
08
48 49
9
12
12
0C
0A
10
09
13 14 15 16 17 18 19 20
13 14 15 16 17 18 19 20
0C 0D 0E 0F 10
4C 4D 4E 4F 50
0D 0E 0F 10 11
4D 4E 4F 50 51
0B 0C 0D 0E 0F
4B 4C 4D 4E 4F
11 12 13 14 15 16 17 18
0A 0B 0C 0D 0E
4A 4B 4C 4D 4E
11
51
12
52
10
50
0F
4F
12
52
13
53
11
51
10
50
13
53
14
54
12
52
11
51
21
21
14
54 55 56 57
15
55 56 57 58
13
53 54 55 56
19
12
52 53
22
22
15
16
14
20
13
23
23
16
17
15
24
24
17
18
16
COM9 to COM16
COM25 to COM32
Display position
DDRAM address
COM9 to
COM16
COM25 to
COM32
COM9 to
COM16
COM25 to
COM32
COM9 to COM16
COM25 to COM32
Display position
DDRAM address
(Left shift
display)
(Right shift
display)
HD66712U
2-line display
381