Command; Command Description - Epson S1D15722 Series Technical Manual

7. COMMAND

7. COMMAND
This IC identifies data bus signal by combination of A0,
interpreted and executed at the internal timing only without relying on the external clock, high-speed processing
is possible.
For the 80 series MPU interface, entering low pulse in the
during write starts the command. When HIGH is entered in the R/
into the state of read. When LOW is entered, it goes into the state of write. Entering high pulse in the E pin
starts the command (For timing, see 10. TIMING CHARACTERISTICS.) Consequently, the 68 series MPU
interface is different from the 80 series MPU interface in the point that
data read in the command description and command table. Command description is shown below by taking
the 80 series MPU interface as an example.
When serial interface is selected, sequentially input data from D7.

7.1 Command Description

(1) Display ON/OFF
This command allows specification of display ON/OFF. Liquid crystal display is performed in
synchronization with display clock input from the built-in oscillation circuit or external source. Do not stop
clock frequency input from the built-in oscillation circuit or external source during display ON.
__
E R/ W
___ ___
A0 RD WR
0 1 0
(2) Display normal/inverted
This command allows inversion of display lighting/non-lighting without rewriting display data RAM. At
this time the contents of the display data RAM are held.
__
E R/ W
___ ___
A0 RD WR
0 1 0
(3) Full display lighting ON/OFF
This command allows to forcefully place full display in the state of lighting irrespective of the contents of the
display data RAM. At this time the contents of the display data RAM are held. In combination with the invert
the display command, all-white display is also available.
__
E R/ W
___ ___
A0 RD WR
0 1 0
28
D7 D6 D5 D4
1 0 1 0
D7 D6 D5 D4
1 0 1 0
* After resetting by the
D7 D6 D5 D4
1 0 1 0
* After resetting by the
___
RD(E), and
___
RD pin during read and low pulse in the pin
__
W pin, the 68 series MPU interface goes
___
RD(E) becomes "1(H)" during display
D3 D2 D1
1 1 1
* After resetting by the
D3 D2 D1
0 1 1
____
RES pin, the display is set to normal display.
D3 D2 D1
0 1 0
____
RES pin, the full display lighting is set to OFF.
EPSON S1D15722D01B000 Technical Manual (Rev.1.1)
___ __
WR(R/ W). Since the command is
D0 Output level
0 Display OFF
1 Display ON
____
RES pin, the display is set to OFF.
D0 Setting
0 RAM data HIGH
LCD ON voltage level
(normal display)
1 RAM data LOW
LCD ON voltage level
(inverted display)
D0 Setting
0 State of normal display
1 Full display lighting