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7. COMMAND DESCRIPTION
(9) Display Normal Rotation/Reversal
This command can reversal display lighting and non-lighting without overwriting the contents of display data RAM.
In this case, the contents of display data RAM are held.
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
(10) Display All Lighting ON/OFF
This command can forcedly make all display set in the lighting state irrespective of the contents of display data RAM.
In this case, the contents of display data RAM are held.
This command has priority over the display normal rotation/reversal command.
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
(11) LCD Bias Set
This command selects the bias ratio of the voltage required for liquid crystal drive. The command is valid when the V/
F circuit of the power supply circuit is operated.
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
(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.
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
1
* The commands other than Display Data Read/Write can be used even in Read Modify Write mode. However, the
column address set command cannot be used.
32
0
1
0
0
1
0
1
0
0
1
0
1
0
0
0
1
1
0
0
0
Setting
1
0
LCD on potential (normal rotation)
RAM data HIGH
1
LCD on potential (reversal)
RAM data LOW
Setting
0
0
Normal display state
1
Display all lighting
Selected state
1
0
1/9 bias
1
1/7 bias
0
0
EPSON
S1D15710 Series (Rev. 1.1c)
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