
20
EPSON
S1D13305 Series
Technical Manual
8. INSTRUCTION SET
8.1. The Command Set
Table 1. Command set
Command
Code
Read
Class
Command
Hex Command Description
Parameters
RD WR A0 D7 D6 D5 D4 D3 D2 D1 D0
No. of
Sec-
Bytes
tion
SYSTEM SET
10101000000
40
Initialize device and
8
8.2.1
display
SLEEP IN
10101010011
53
Enter standby mode
0
8.2.2
DISP ON/OFF
1010101100
D
58, Enable and disable dis-
1
8.3.1
59
play and display flashing
SCROLL
10101000100
44
Set display start address
10
8.3.2
and display regions
CSRFORM
10101011101
5D Set cursor type
2
8.3.3
CGRAM ADR
10101011100
5C
Set start address of char-
2
8.3.6
acter generator RAM
CD CD
4C
Set direction of cursor
CSRDIR
101010011
10
to
movement
0
8.3.4
4F
HDOT SCR
101010110105A
Set horizontal scroll
1
8.3.7
position
OVLAY
101010110115B
Set display overlay
1
8.3.5
format
CSRW
10101000110
46
Set cursor address
2
8.4.1
CSRR
10101000111
47
Read cursor address
2
8.4.2
MWRITE
10101000010
42
Write to display memory
—
8.5.1
MREAD
10101000011
43
Read from display
—
8.5.2
memory
Notes:
1. In general, the internal registers of the S1D13305 series are modified as each command parameter is input. However,
the microprocessor does not have to set all the parameters of a command and may send a new command before all parameters
have been input. The internal registers for the parameters that have been input will have been changed but the remaining
parameter registers are unchanged.
2-byte parameters (where two bytes are treated as 1 data item) are handled as follows:
a. CSRW, CSRR: Each byte is processed individually. The microprocessor may read or write just the low byte of the cursor
address.
b. SYSTEM SET, SCROLL, CGRAM ADR: Both parameter bytes are processed together. If the command is changed after
half of the parameter has been input, the single byte is ignored.
2. APL and APH are 2-byte parameters, but are treated as two 1-byte parameters.
System
control
Display
control
Drawing
control
Memory
control
INSTRUCTION SET