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HD44780 Datasheet(PDF) 12 Page - Hitachi Semiconductor

Part No. HD44780
Description  Dot Matrix Liquid Crystal Display Controller/Driver
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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 12 page
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HD44780U
12
 Case 2: For a 16-character × 2-line display, the HD44780 can be extended using one 40-output
extension driver. See Figure 6.
When display shift operation is performed, the DDRAM address shifts. See Figure 6.
DDRAM
address
Display
position
1
234
5678
9 10 11 12 13 14 15 16
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
For
shift left
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E
27
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
HD44780U display
Extension driver
display
02
01
03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10
For
shift right
41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E
67
Figure 6 2-Line by 16-Character Display Example




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