Specifications

8–34 EPSON
SED1240 Series
YES
NO
YES
NO
<Example of Address Set>
Note: When making access to the RAM after a
change of the RE bit, be sure to set the
address. If not, the contents of the RAM
will be abnormal on the display.
Be sure to set the RE bit
and the address in a pair.
Write
completed?
Write
Set address
Set RE bit
Write in RAM?
0XH
0
RE
SI SIB EV TEST
0123456789ABCDEF
1
1XH
2XH
3XH
4XH
5XH
6XH
7XH
0XH
1XH
2XH
3XH
4XH
5XH
6XH
7XH
CGROM(00H)
CGROM(02H)
CGROM(04H)
CGROM(01H)
CGROM(03H)
CGROM(05H)
SI
TEST
EV
SIB
:
:
:
:
Testing register. Don't use it.
Electronic volume RAM
Static icon blink control RAM
Static icon RAM
Symbol register
Symbol register
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Low
order
High
order
DDRAM line 1
DDRAM line 2
DDRAM line 3
DDRAM line 4
DDRAM line 5
For static icon:
COMSA, SEGSA - J
Symbol register:
COMS1, 2
[SED1240 RAM map] (4-line 16-digit display)