HD44780U Hitachi Semiconductor (acquired by Renesas), HD44780U Datasheet - Page 13

• Manufacturer Part Number: HD44780U
• Description: Dot Matrix Liquid Crystal Display Controller/driver
• Manufacturer: Hitachi Semiconductor (acquired by Renesas)

Case 2: For a 16-character
extension driver. See Figure 6.
When display shift operation is performed, the DDRAM address shifts. See Figure 6.
Figure 6 2-Line by 16-Character Display Example
For
shift left
For
shift right
Display
position
DDRAM
address
2-line display, the HD44780 can be extended using one 40-output
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
27
67
01
41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50
1
HD44780U display
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E
02
2
03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10
3
4 5
6
7
8 9 10 11 12 13 14 15 16
Extension driver
display
HD44780U
179