Specifications

8–50 EPSON
SED1240 Series
Static Icon RAM
The SED1240 series can display static icons in the
standby mode.
Each of 10 icons can be set in respect of ON/OFF and
blink by using the pins of COMSA to SEGSA to J. The
relation between static icon functions and static icon
RAM write data is shown below.
0
0
0
1
0
0
0
0
0
0
11
0
0
1
1
0
1
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
1
1
0
1
0
1
00H
01H
SEGSA B C D E
SEGSF G H I J
D7 D6 D5 D4 D3 D2 D1 D0
RAM address
[RE = 0]
ON OFF
Display
SI data
For static icons, blink ON/OFF control can be exerted
independently for each pin.
00H
02 H
D7 D6 D5 D4 D3 D2 D1 D0
111
11
00
00
0
SEGSA B C D E
f BLINK
RAM address
[RE = 0]
ONOFF
DisplaySI data
f BLINK : 1 to 2Hz
02H
03H
D7 D6 D5 D4 D3 D2 D1 D0
SEGSA SEGSB SEGSC SEGSD SEGSE
SEGSF SEGSG SEGSH SEGSI SEGSJ
RAM address
[RE = 0]
Blink
1 = ON
0 = OFF
Function
ISB data VS pin
The following table shows a static icon ON/OFF function
and static icon blink control.
<Cautions for static icon operation>
• Be sure to write static icon data when the oscillating circuit is on. If the data is written when the oscillating circuit
is off (Sleep Mode), previous display may remain and instantaneous lighting may occur.
• To perform resetting on the RES terminal except at the time of turning on power, turn off the static icon and blinking
in advance, then turn off the oscillating circuit. If resetting is performed when the static icon or blinking is on,
instantaneous lighting may be caused by stopping of the oscillating circuit.