SED1278D EPSON [Epson Company], SED1278D Datasheet - Page 3

• Manufacturer Part Number: SED1278D
• Description: Dot Matrix LCD Controller Driver
• Manufacturer: EPSON [Epson Company]

ELECTRICAL CHARACTERISTICS
Enable cycle time
Enable "H" level pulse width
Enable rise/fall time
RS, R/W setup time
RS, R/W address hold time
Data setup time
Write data hold time
"H" level input voltage
"L" level input voltage
"H" level input voltage
"L" level input voltage
"H" level output voltage (1)
"L" level output voltage (1)
"H" level output voltage (2)
"L" level output voltage (2)
Driver-on resistor (COM)
Driver-on resistor (SEG)
I/O leakage current
Pull-up MOS current
Supply current
External clock operation
External clock operating frequency
External clock duty
External clock rise time
External clock fall time
Internal clock operation (Rf oscillation)
Oscillation frequency
Internal clock operation (Ceramic filter oscillation)
Oscillation frequency
LCD driving voltage
Enable cycle time
Enable "H" level pulse width
Enable rise/fall time
RS, R W setup time
RS, R W address hold time
Read data output delay
Read data hold time
DC Characteristics
AC Characteristics
Write Cycle
Read Cycle
Characteristic
Characteristic
Characteristic
(1)
(2)
(1)
(2)
Symbol
tr
tf
Symbol
Symbol
f
R
V
V
R
t
V
V
EXTCL
Duty
V
t
f
f
V
V
—I
EXTCL
EXTCL
V
V
t
rE
t
rE
t
I
OSC
OSC
t
t
COM
WEH
cycE
WEH
t
OH1
OH2
SEG
I
LCD
cycE
t
t
DHR
t
t
t
OL1
OL2
OP
t
IH1
IH2
IL1
IL2
IL
AS
AH
DS
DH
AS
AH
RD
, t
, t
P
fE
fE
Rf oscillation, from
external clock
V
DD
= 5V, fosc = f
V
V
I
R
OH
I
COM
OH
SEG
I
Ceramic filter
V
f
I
OL
OL
I
= 91K
Condition
V
= –0.205mA
V
= 0 to V
= –0.04mA
= 0.04mA
—V
DD
—V
DD
C
= 1.6mA
Condition
Condition
L
—V
= 5V
= 100pF
n
n
5
=0.5V
CP
=0.5V
DD
2%
= 270kHz
RS, R/W, E
COM1~16
Applicable
DB0~DB7
DB0~DB7
SEG1~40
XSCL
OSC1
DO
V
LP
Pin
DD
(V
Min.
Min.
500
220
(V
500
220
40
10
60
10
—
40
10
—
20
—
DD
DD
(V
DD
= 5.0V 10%, V
= 5.0V 10%, V
V
=5.0V 10%, V
0.9V
DD
Min.
V
V
125
190
245
2.0
2.4
3.0
—
—
—
—
—
50
—
45
—
—
—1.0
SS
SS
DD
Typ.
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SED1278F/D
Typ.
125
250
270
250
2.5
0.5
50
—
—
—
—
—
—
—
—
—
—
—
—
2
SS
SS
SS
= 0V, Ta = –20 to 75 C)
= 0V, Ta = –20 to 75 C)
=0V, Ta=–20 to 75 C)
0.1V
Max.
Max.
120
25
Max.
—
—
25
—
—
—
—
—
—
—
—
—
V
V
V
250
350
350
255
0.8
1.0
0.4
0.8
0.2
0.2
10
10
55
—
—
1
DD
DD
DD
DD
Unit
kHz
kHz
kHz
Unit
mA
Unit
k
k
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
V
V
V
A
A
S
S
3