HD66712 Datasheet, PDF (20/88 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver

HD66712U
• 4-line display (NW = 1)
 Case 1: The first line is displayed from COM1 to COM8, the second line is displayed from COM9
to COM16, the third line is displayed from COM17 to COM24, and the fourth line is displayed
from COM25 to COM32.
Note that the DDRAM addresses of each line are not consecutive. Figure 8 shows an example
where a 12 × 4-line display is performed using one HD66712.
When a display shift is performed, the DDRAM addresses shift as shown.
1 2 3 4 5 6 7 8 9 10 11 12
COM1 to 8 ^{00 01 02 03 04 05 06 07 08 09 0A 0B}
COM9 to 16 ^{20 21 22 23 24 25 26 27 28 29 2A 2B}
COM17 to 24 40 41 42 43 44 45 46 47 48 49 4A 4B
COM25 to 32 ^{60 61 62 63 64 65 66 67 68 69 6A 6B}
Display position
DDRAM address
(Left shift display)
1 2 3 4 5 6 7 8 9 10 11 12
COM1 to 8 01 02 03 04 05 06 07 08 09 0A 0B 0C
COM9 to 16 ^{21 22 23 24 25 26 27 28 29 2A 2B 2C}
COM17 to 24 41 42 43 44 45 46 47 48 49 4A 4B 4C
COM25 to 32 ^{61 62 63 64 65 66 67 68 69 6A 6B 6C}
(Right shift display)
1 2 3 4 5 6 7 8 9 10 11 12
13 00 01 02 03 04 05 06 07 08 09 0A
33 20 21 22 23 24 25 26 27 28 29 2A
53 40 41 42 43 44 45 46 47 48 49 4A
73 60 61 62 63 64 65 66 67 68 69 6A
Figure 8 4-Line Display
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