ST7586S Datasheet, PDF (37/63 Pages) Sitronix Technology Co., Ltd. – 4-Level Gray Scale Dot Matrix LCD Controller/Driver

ST7586S
Read Modify Write
This instruction is used to enter/exit read modify write mode. When entering read modify write, the display data read will not
increase column address. Only the display data write operation will increase the column address. This mode is maintained
until Disable Read Modify Write (B9h) is accepted.
A0 R/W D7
D6
D5
D4
D3
D2
D1
D0
Description
RMW=0: Enable read modify write
0
0
1
0
1
1
1
0
0
RMW _{RMW=1: Disable read modify write}
Set Row/Column Address
Enable Read Modify Write
Read-Modify-Write Cycle
Dummy Read
Data Read
No
Modify Data
Data Write
(at same Column Addr.)
Column Address increase
Finished?
Yes
Done
Ver-1.1a
37/63
2009/11/30