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3: COMMANDS AND COMMAND REGISTERS
3 C
OMMANDS AND
3.1
Types of Commands (when Indirectly Interfaced)
When indirect mode is selected for the system interface, use commands to set up the display.
The table below lists the types of commands, including the code of each command.
Purpose
Command
WR# RD# AB0
SYSTM SET
Operation
control
SLEEP IN
DISPON/OFF
SCROLL
CSRFORM
Display
CSRDIR
control
OVLAY
CGRAM ADR
HDOT SCR
GRAY SCALE
CSRW
Drawing
control
CSRR
MWRITE
Memory
control
MREAD
Note 1: As a rule, each command is executed every time a parameter for the command is input to the
S1D13700, and completed before the next parameter (P) or command (C) is input. Therefore,
the MPU can stop sending parameters in the middle and send the next command. In this case,
the parameters that have already been sent are effective and other parameters not input to the
S1D13700 retain their original values. However, two-byte parameters are handled as
described below.
Note 1:
1. CSRW and CSRR commands: The parameter is executed one byte at a time. Therefore, the MPU
can only alter or check the low-order byte.
2. Commands other than CSRW and CSRR: The parameter is not executed until its second byte is
input.
SYSTEM SET
SCROLL
CGRAM ADR
3. Two-byte parameters consist of two bytes of data (as in the case of APL and APH).
4. Because the value of each register after power-on is indeterminate, make sure all command
parameters are set.
14
Code
DB BIN
7 6 5 4 3 2 1 0
1
0 1
0 1 0 0 0 0 0 0
1
0 1
0 1 0 1 0 0 1 1
1
0 1
0 1 0 1 1 0 0 D
1
0 1
0 1 0 0 0 1 0 0
1
0 1
0 1 0 1 1 1 0 1
1
0 1
0 1 0 0 1 1 1 0
1
0 1
0 1 0 1 1 0 1 1
1
0 1
0 1 0 1 1 1 0 0
1
0 1
0 1 0 1 1 0 1 0
1
0 1
0 1 1 0 0 0 0 0
1
0 1
0 1 0 0 0 1 1 0
1
0 1
0 1 0 0 0 1 1 1
1
0 1
0 1 0 0 0 0 1 0
1
0 1
0 1 0 0 0 0 1 1
C
OMMAND
Command
description
DB
HEX
Sets initial operation
40
and window size.
53
Sleep operation.
Instructs to turn
58 •
display on or off and
59
make the screen flash
on and off.
Sets the display start
44
address and display
area.
Sets the cursor shape,
5D
etc.
CD CD
4C –
Sets the direction of
4F
cursor movement.
Instructs screen
5B
overlay mode.
Sets the start address
5C
of CG RAM.
Sets the horizontal
5A
direction dot unit and
scroll position.
60
Sets grayscale mode.
Sets the cursor
46
address.
Instructs to read the
47
cursor address.
Instructs to write to
42
display memory.
Instructs to read
43
display memory data.
EPSON
R
EGISTERS
Parameters
following the
command
See
No. of
pages
parameters
8
19
0
27
1
28
10
29
2
37
0
38
1
39
2
43
1
44
0
45
2
45
2
46
—
47
—
47
S1D13700 Technical Manual
Remarks
Note 1
Note 1
Note 1
Note 1
Note 1
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