S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 401

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15705 Series
10–42
(12) Read Modify Write
This command is used together with the end command. Once this command is entered, the column address can be
incremented by 1 only using the display data write command instead of being changed using the display read command.
This state is held until the end command is entered. When the end command is entered, the column address returns to
the address when the read modify write command is entered. This function can reduce the load of the MPU when
repeatedly changing data for a specific display area such as a blinking cursor.
* The commands other than Display Data Read/Write can be used even in Read Modify Write mode. However, the
• Sequence for cursor display
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
column address set command cannot be used.
E R/W
1
0
1
1
1
0
0
No
0
Is the change terminated?
Column Address Set
Read Modify Write
Page Address Set
Dummy Read
0
Data Read
Data Write
EPSON
Fig. 16
End
0
Yes
Data processing
Rev. 3.1a