Datasheet

SH1107
24
3. Set Memory addressing mode (20H - 21H)
There are two different memory addressing modes in SH1107: page addressing mode and vertical addressing mode. This
command sets the way of memory addressing into one of the above two modes, “COL” means column.
A0
RD
(E)
WR
(
WR/
)
D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 0 0 1 0 0 0 0 D
n Page addressing mode (20H) (POR)
In page addressing mode, after the display RAM is read/ written, the column address is increased automatically by 1. If the
column address reaches column end address, the column address is reset to column start address and page address is not
changed. Users have to set the new page and column addresses in order to access the next page RAM content. When the
Segment is remapped, the direction of both page and byte are reversed. The sequence of movement of the page and column
address for page addressing mode is shown in Figure 13-1 and Figure 13-2.
COL0 COL1 COL2 . . . COL126 COL127
PAGE0
PAGE1
PAGE2
..
PAGE14
PAGE15
Figure13-1(a)
D0
D1
....
D6
D7
PAGE2
Col0 Col1
......
Col126Col127
D0
D1
....
D6
D7
Figure13-1(b)
Figure13-1 page addressing mode (Seg remap=0)