S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 579

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

S1D15B01 Series
7. COMMAND DESCRIPTION
The S1D15B01 series identifies the data bus by a combination of A0, RD (E), WR (R/W) signals.
In the 8080-series MPU interface, the command is activated when a low pulse is input to RD pin for reading and when
a low pulse is input to WR pin for writing. In the 6800-series MPU interface, the S1D15B01 series enters a read mode
when a high level is input to R/W pin and a write mode when a low level is input to R/W pin, and the command is activated
when a high pulse is input to E pin. Therefore, in the command explanation and command table, the 6800-series MPU
interface is different from the 8080-series MPU interface in that RD (E) becomes “1 (H)” in Display data read command.
And when the serial interface is selected, the data is input in sequence starting with D7.
Taking the 8080-series MPU interface as an example, commands will be explained below.
Explanation of commands
(1) Display ON/OFF
This command turns the display ON and OFF.
When the Display OFF command is executed when in the Display all points ON mode , Power saver mode is entered.
See the section on the Power saver for details.
(2) Display normal/reverse
This command can reverse the lit and unlit display without overwriting the contents of the DDRAM.
(3) Display all points ON/OFF
This command makes it possible to force all display points ON regardless of the content of the DDRAM. Even when
this is done, the DDRAM contents are maintained. This command takes priority over the Display normal/reverse
command.
When the Display all points ON command is executed when in the Display OFF mode, Power saver mode is entered.
See the section on the Power saver for details.
13–24
A0
A0
A0
0
0
0
RD WR
RD WR
RD WR
E
E
E
1
1
1
R/W
R/W
R/W
0
0
0
D7
D7
D7
1
1
1
D6
D6
D6
0
0
0
D5
D5
D5
1
1
1
D4
D4
D4
0
0
0
D3
D3
D3
EPSON
1
0
0
D2
D2
D2
1
1
1
D1
D1
D1
1
1
0
D0
D0
D0
0
1
0
1
0
1
Reverse:DDRAM Data LOW
Normal:DDRAM Data HIGH
Normal display mode
Display all points ON
=LCD ON voltage
=LCD ON voltage
Display OFF
Display ON
Setting
Setting
Setting
Rev. 1.1a