Specifications

EPSON 8–25
SED1240 Series
SED1240
Series
Command
Code
Function
RE A0 WR D7 D6 D5 D4 D3 D2 D1 D0
(8) RAM 0/1 1 0 DATA Writes data into the DDRAM, CGRAM, symbol
Data register RAM, static icon RAM or electronic volume
Write RAM.
This is determined by the address set instruction
executed immediately before writing data.
(9) NOP 0/1 0 0 0 0 0 0 0 0 0 0 A command for NON-OPERATION. This also serves
as a test mode clear command, so it is recommended
to input it periodically.
(10) Test 0/1 0 0 0 0 0 0 ****A command for IC chip test. Don’t use this command.
Mode
Description of Command Functions
Cursor home
Function: Presets the address counter to 30H. Only
when the previous RAM access is made to
the area of RE = 0 of the RAM map, the
cursor is moved to digit 1 on line 1 if the
cursor is displayed.
If line scroll is set, it is cleared to the scroll
amount = 0 line.
Line scroll control
Function: Controls the display scroll amount for each
line.
LS1 LS0 Function
0 0 Scroll amount 0 line
01
Scrolls 1 line upward.
(display line 1 from DDRAM line 2)
10
Scrolls 2 lines upward.
(display line 1 from DDRAM line 3)
11
Scrolls 3 lines upward.
(display line 1 from DDRAM line 4)
RE A0 WR D7 D6 D5 D4 D3 D2 D1 D0
0000001
****
∗ : Don't Care
RE A0 WR D7 D6 D5 D4 D3 D2 D1 D0
1000001**LS1LS0
∗ : Don't Care