Epson S1D15722 Series Technical Manual page 37

7. COMMAND
(8) Write display data
This command allows writing 8-bit data to the specified address of the display data RAM. Using the select
display data input direction after writing automatically increments the column address or page address by 1.
So MPU can write data on display continuously.
__
E R/ W
___ ___
A0 RD WR
0 1 0
1 1 0
(9) Read display data
This command allows reading 8-bit data from the specified address of the display data RAM Using the select
display data input direction after reading automatically increments the column address or page address by 1.
So MPU can read data of multiple words continuously.
Immediately setting the column address or page address, one-shot dummy read is required. For more
information, see 6.1.5 Description of Access to Display Data RAM and Internal Register. When serial
interface is used, the display data RAM cannot be read.
__
E R/ W
___ ___
A0 RD WR
0 1 0
1 0 1
(10) Select display data input direction
This command allows setting of the direction of automatic increment of the display RAM address.
For more information, see 6.2.3 Page Address Circuit/Column Address Circuit in FUNCTIONAL
DESCRIPTION.
__
E R/ W
___ ___
A0 RD WR
0 1 0
(11) Direction of setting column address
This command allows reversal of correspondence between the column address of the display RAM data
shown in Figs.6.5 and 6.6 and segment driver output. Therefore, the order of the segment driver output pins
can be reversed using the command.
The column address is incremented by +1 according to the column address in Figs.6.5 and 6.6 as display data
is written and read. For more information, see 6.2.3 Page Address Circuit/Column Address Circuit in
FUNCTIONAL DESCRIPTION.
__
E R/ W
___ ___
A0 RD WR
0 1 0
Note: After resetting by the RES
32
D7 D6 D5 D4
0 0 0 1
Write data
D7 D6 D5 D4
0 0 0 1
Read data
D7 D6 D5 D4
1 0 0 0
Note: After resetting by the RES
D7 D6 D5 D4
1 0 1 0
column address.
D3 D2 D1
1 1 0
D3 D2 D1
1 1 0
D3 D2 D1
0 1 0
_______
pin, the direction is set to column.
D3 D2 D1
0 0 0
_______
pin, the direction is set to normal of setting the
EPSON S1D15722D01B000 Technical Manual (Rev.1.1)
D0
1
D0
0
D0 Direction
0 Column
Page
1
D0 Setting
0 Normal
Reversal
1