hd66710 Renesas Electronics Corporation., hd66710 Datasheet - Page 14

• Manufacturer Part Number: hd66710
• Description: Dot Matrix Liquid Crystal Display Controller/driver
• Manufacturer: Renesas Electronics Corporation.

HD66710
304
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. Care is required because the end address of the first line and the start address
of the second line are not consecutive. For example, the case is shown in Figure 5 where 16 2-
line display is performed using the HD66710. When a display shift operation is performed, the
DDRAM address shifts. See Figure 4.
Case 2: Figure 5 shows the case where the EXT pin is fixed to high, the HD66710 and the 40-
output extension driver are used to extend the number of display characters.
In this case, the start address from COM9 to COM16 of the HD66710 is 0AH, and that from
COM25 to COM32 of the HD66710 is 4AH. To display 24 characters, the addresses starting at
SEG11 should be used.
When a display shift operation is performed, the DDRAM address shifts. See Figure 5.
COM17 to 24
COM17 to 24
COM17 to 24
COM1 to
COM8
COM1 to
COM8
COM17 to
COM24
COM1 to
COM8
COM17 to
COM24
COM1 to 8
COM1 to 8
COM1 to 8
00 01 02 03 04
1 2 3 4 5 6 7
01 02 03 04
41 42 43 44 45 46
27
67
1 2 3 4 5 6 7
Figure 5 2-Line by 24 Character Display Example
HD66710
SEG1 to SEG35
Figure 4 2-line by 16-Character Display Example
00 01 02 03 04
40 41 42 43 44 45
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
05
05
06
06
07
05
47
08 09
48 49
06
46 47 48 49
8 9 10 1112
07 08 09 0A 0B
8 9 10 11 12
Extension
driver (1)
Seg1 to Seg25
07 08 09
05
45
06
46
04
44
0A 0B
4A 4B
06
46
07
47
05
45
07
47
08
48
06
46
0C
4C
0A
4A
08 09 0A 0B 0C
48 49 4A 4B 4C
09 0A 0B 0C 0D
49 4A 4B 4C 4D
07 08 09 0A 0B
47 48 49 4A 4B
1314 15 16 17 18 19 20 21 22 23 24
1314 15 1617 18 19 20 21 22 23 24
9 10 11 12 13 14 15 16
0C 0D 0E 0F 10
4D 4E 4F 50 51
0B
4B
0D 0E 0F 10 11
HD66710
SEG11 to SEG35
(SEG1 to SEG10:
skip)
0C 0D 0E 0F
4C 4D 4E 4F
11 12 13 14 15 16 17
12 13
52 53
10
50
0D
4D
0E
4E
0C
4C
11 12 13
51 52 53
0E
4E
0F
4F
0D
4D
Extension
driver (1)
Seg1 to Seg35
14 15 16
54 55 56
0F
4F
10
50
0E
4E
14 15 16
54 55 56
17
57
COM9 to 16
COM25 to 32
COM9 to 16
COM25 to 32
COM9 to 16
COM25 to 32
18
58
COM9 to COM16
COM9 to
COM16
COM25 to
COM32
COM9 to
COM16
COM25 to
COM32
Display position
DDRAM address
Display position
DDRAM address
(Left shift display)
(Right shift display)
(Left shift display)
(Right shift display)