LIQUID CRYSTAL DISPLAY MODULE
L4044
PRODUCT SPECIFICATION
SEIKO INSTRUMENTS INC.
AN.No.CLCM-561E
L4044
n
Features of L4044 Series
40 characters
×
4 lines
STN LCD is used
5
×
7 dot matrix + cursor
1/16 duty
5V single power supply
n
Specification
A. Mechanical Characteristics
Item
Module size (H V T)
(Reflective type)
Module size (H V T)
(Built-in LED backlight type)
Module size (H V T)
(Built-in EL backlight type)
Viewing area (H
Dot size (H V)
Dot space
Center to center dimension of
mounting holes (H V)
Weight (Reflective type)
Weight (Built-in LED backlight type)
Weight (Built-in EL backlight type)
H : Horizontal, V : Vertical, T : Thickness (max.)
V)
Character size (5 7 dot, H V)
Specifications
Unit
D. Optical Characteristics (STN gray type)
D-1 Reflective type
Viewing angle : 6 o'clock (Ø = 0˚), Ta = 25˚C, V
opr
= 4.75V
Item
Viewing angle
2
-
Symbol
1
2
1
Conditions
C
≥
2.0
Ø = 0˚
= 25˚, Ø = 0˚
= 0˚
Ø = 0˚
= 0˚, Ø = 0˚
Ta = 0˚C
V
opr
= 5.0V
Min. Typ. Max. Unit
—
55
70
2
—
—
—
—
—
—
—
4
60
-15
—
—
—
100
—
ms
ms
deg.
Contrast
Response time (rise)
Response time (fall)
Response time (rise)
Response time (fall)
C
t
on
t
off
t
on
t
off
270 400
720 1100
170 350
190.0 54.0 10.1 mm
190.0 54.0 16.3
190.0 54.0 11.3
147.0
29.5
mm
mm
mm
mm
mm
mm
mm
g
g
g
D-2 Transflective type
Viewing angle : 6 o'clock (Ø = 0˚), Ta = 25˚C, V
opr
= 4.75V, Backlight OFF
Item
Viewing angle
2
-
Symbol
1
2
1
Conditions
C
≥
2.0
Ø = 0˚
= 25˚, Ø = 0˚
= 0˚
Ø = 0˚
= 0˚, Ø = 0˚
Ta = 0˚C
V
opr
= 5.0V
Min. Typ. Max. Unit
—
50
60
2
—
—
—
—
—
—
—
4
60
-10
—
—
—
100
—
ms
ms
deg.
2.78 4.27
0.50 0.55
0.07
183.0 47.0
90
140
105
Contrast
Response time (rise)
Response time (fall)
Response time (rise)
Response time (fall)
C
t
on
t
off
t
on
t
off
270 400
720 1100
170 350
B. Absolute Maximum Ratings
Item
Power supply
voltage
Input voltage
Operating temp.
Storage temp.
Storage
humidity
Symbol Conditions
V
DD
V
LC
V
IN
T
opr
T
stg
≤
48hrs
≤
1000hrs
Min.
-0.3
V
DD
-12.0
-0.3
0
-20
+20
+20
Max.
6.0
V
DD
V
SS
= 0V
Unit
V
V
V
˚C
˚C
%RH
%RH
E. Recommended Operating Voltage
(STN gray type)
The recommended value of (V
opr
) for an ambient
temperature is as follows.
Temperature (˚C)
V
opr
(V)
0
5.00
25
4.75
V
opr
= V
DD
-V
LC
50
4.50
V
DD
+0.3
+50
+60
+85
+65
C. Electrical Characteristics
V
DD
= 5V ± 5%, V
SS
= 0V, Ta = 0˚C to 50˚C
Item
Symbol
Conditions
Min. Typ. Max. Unit
4.75 5.00 5.25
4.0
2.2
0
-I
OH
= 0.205mA
I
OL
= 1.2mA
Ta = 25˚C
V
DD
= 5V
V
LC
= 0.25V
Resistance
oscillation
2.4
—
—
—
190
—
—
—
—
—
8.0
3.8
270
11.0
V
DD
0.6
—
0.4
12.0
4.5
350
V
V
V
V
V
V
mA
mA
kHz
V
DD
Power supply
voltage
V
DD -
V
LC
Input *
voltage
**
Output
voltage
High
Low
High
Low
V
IH1
V
IL1
V
OH1
V
OL1
I
DD
I
LC
f
osc
Current
consumption
Clock oscillation
frequency
* Applied to DB
0
~ DB
7
, E, R/W, RS
** Applied to DB
0
~ DB
7
1
AN.No.CLCM-561E
L4044
n
STN Reflective type
Item
Mechanical Characteristics
Absolute Maximum Ratings
Electrical Characteristics
Optical Characteristics
Recommended Operating Voltage
L404400J000
A
B
C
D-1
E
F-1 Power Supply
Ω
F-2 Dimensions
±
±
±
×
Φ
±
F-3 Pin Functions
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Name
DB
7
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
E
1
R/W
RS
V
LC
V
SS
V
DD
E
2
NC
NC
NC
Function
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Enable (for upper 2 lines)
L : Data write
(LCM MPU)
, H : Data read
(LCM
L : Instruction code input, H : Data input
Liquid crystal driving voltage
GND
Power supply voltage +5V
Enable (for lower 2 lines)
—
—
—
Φ
±
F-4 Block Diagram
MPU)
2
AN.No.CLCM-561E
L4044
n
STN Transflective,
Built-in LED Backlight type
Item
Mechanical Characteristics
Absolute Maximum Ratings
Electrical Characteristics
Optical Characteristics
Recommended Operating Voltage
L4044B1J000
A
B
C
D-2
E
G-1 Power supply
Ω
Ω
G-2 Dimensions
±
±
±
×
Φ
±
Φ
±
G-3 Pin Functions
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Name
DB
7
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
E
1
R/W
RS
V
LC
V
SS
V
DD
E
2
NC
V
LED
V
LEDG
Function
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Data bus line
Enable (for upper 2 lines)
L : Data write
(LCM MPU)
, H : Data read
(LCM
L : Instruction code input, H : Data input
Liquid crystal driving voltage
GND
Power supply voltage +5V
Enable (for lower 2 lines)
—
Anode
Cathode
G-4 Block Diagram
MPU)
G-5 LED Backlight
G-5-1 LED Circuit Diagram
3
AN.No.CLCM-561E
L4044
G-5-2 Absolute Maximum Ratings
Ta = 25˚C
Item
Symbol Specifications
LED forward current consumption *
I
F
960
LED reverse voltage
V
R
8
LED allowable dissipation
P
D
4.16
* LED forward current consumption and operating temperature
characteristics are as follows.
Unit
mA
V
W
Item
LED forward
input voltage
LED reverse
current
Symbol
V
F
I
R
Conditions
I
F
= 480mA
V
R
= 8V
G-5-3 Electrical Characteristics
Ta = 25˚C
Min. Typ. Max. Unit
3.8
—
4.1
—
4.4
4.8
V
mA
G-5-4 Optical Characteristics
Item
Surface brightness
(panel upper side)
LED brightness
°
Symbol
B
p
L
Conditions
I
F
= 480mA
V
opr
= 0V
I
F
= 480mA
Ta = 25˚C
Specifications
Unit
8 min.
10 typ.
40 min.
50 typ.
50,000 typ.
Yellowgreen
cd/m
2
cd/m
2
h
LED service life
LED color
n
STN Transflective,
Built-in EL Backlight type
Item
Mechanical Characteristics
Absolute Maximum Ratings
Electrical Characteristics
Optical Characteristics
Recommended Operating Voltage
L404421J000
A
B
C
D-2
E
H-1 Power Supply
Ω
H-2 Dimensions
±
±
±
×
Φ
±
Φ
±
4
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