HD66710 Datasheet, PDF (47/73 Pages) Hitachi Semiconductor – (Dot Matrix Liquid Crystal Display Controller/Driver)

HD66710
When using one HD66710, the start address of COM9–COM16/COM25–COM33 is calculated by adding
8 to the start address of COM9–COM16 COM25–COM32. When extending the address, the start address
is calculated by adding A(10) to COM9–COM16/COM25 to COM32. The relationship betweenmodes
and display start addresses is shown below.
Table 13 Display Start Address in Each Mode
Number of Lines
1-Line Mode
2-Line Mode
4-Line Mode
Output
EXT Low
EXT High
EXT Low
EXT High
EXT Low/High
COM1–COM8
D00±1
D00±1
D00±1
D00±1
D00±1
COM9–COM16 D08±1
D0A±1
D08±1
D0A±1
D20±1
COM17–COM24 —
—
D40±1
D40±1
D40±1
COM25–COM32 —
—
D48±1
D4A±1
D60±1
COM17
S00
S00
—
—
—
COM33
—
—
S00
S00
S00
Notes: 1. When an EXT pin is low, the extension driver is not used; otherwise, the extension driver is
used.
2. D— is the start address of display data RAM (DDRAM) for each display line.
3. S— is the start address of segment RAM (SEGRAM).
4. ±1 following D— indicates increment or decrement at display shift.
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