Dot Matrix LED Unit for Outdoor Use LT1448MA(Lamp Type,Water-proof Type)
s
Features
隆No.
of dots : 16!16dots
隆Outline
dimensions : 160!160mm
隆Dot
size : 酶7.5mm(Using oval lamp)
隆Dot
pitch : 9.9mm
隆Radiation
color : Yellow-green+Red(High-luminosity)dichromatic type
隆Driving
method : 1/4 duty dynamic drive
LT1448MA
s
Absolute Maximum Ratings
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Symbol
V
DD
V
LED
V
I
t
ON
T
opr
T
stg
P
Rating
-0.3 to +5.5
-0.3 to +5.0
-0.3 to Vcc+0.3
1
-10 to +45
-20 to +100
38
(Ta=25藲C)
s
Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
*1
LED current dissipation
*1
(V
CC
=5V,V
LED
=4.5V,Ta=25藲C)
Unit
V
V
V
ms
藲C
藲C
W
s
Optical Characteristics
Symbol
Parameter
2胃
1
/
2
Viewing angle(Horizontal)
Red
位
p
Peak emission wavelength
Yellow-green
(V
CC
=5V,V
LED
=4.5V,Ta=25藲C)
TYP
70
660
565
Unit
藲
nm
Symbol
MIN. TYP. MAX. Unit
V
5.25
5.0
V
DD
4.75
V
4.75
4.5
4.25
V
LED
mA
800
400
------
I
DD
A
7.0
6.0
------
I
LED
V
------
------
3.5
V
IH
Input voltage
V
1.5
------
------
V
IL
碌A(chǔ)
0.1
------
------
I
IH
Input current
mA
0.12
------
------
I
IL
MH
Z
10
------
------
f
CLK
Clock frequency
400 3 000 H
Z
250
f
FR
Frame frequency
*1 Under the condition that dichromatic all dots are lit.
s
Timing Chart
t
SU
th
t
WCLK
CLOCK
s
Luminance
Luminance is classified into 2 ranks shown below.
(V
CC
=5V,V
LED
=4.5V,Ta=25藲C)
RDATA
GDATA
V
D
(N+1)
V
D
(n+2) data
t d (C-L)
t dD
t d (L-C)
t
WL
RDATA
out
GDATA
out
Radiation color
Red
Yellow-green
Rank
1
1 100
700
2
1 300
800
Unit
cd/m
2
LATCH
1/fosc
Internal
ENABLE
ON
OFF
t d(K-L)
ON
t d (L-K)
OFF
ON
RENABLE
GENABLE
ADDRESS
(A0, A1)
V
D
(n) data ON
t d (K-A)
V
D
(n)
t d(L-A)
t d (A-K)
V
D
(n+1) data ON
t
WKNA
V
D
(n+1)
s
Terminal Functions
Function
Supply voltage for LED(+4.5V)
Supply voltage for IC(+5V)
Ground for IC
Ground for LED
Address specification signal for column driver
Serial data input for each color(H:ON, L:OFF)
RDATA
Shift from up to down in the unit
GDATA
(H
D48
/H
D63
/H
D32
/H
D47
/H
D16
/H
D31
/H
D0
/H
D15)
Latch signal of display data
Input signal
LATCH
L/H: Contents of shift register are latched.
(CN2)
Controls ON/OFF of each color of LED
RENABLE
GENABLE (H: LED OFF)
Clock signal for data transmission in the shift-
CLOCK
register.(L/H: serial data is shifted.)
Ground for signal (Connected to ground for IC)
GND1
Buffered input signal
A0,A1
RDATA Input signal generated through 64-bit shift register or
Output signal
GDATA buffer
(CN3)
LATCH Buffered input signal
RENABLE
Buffered input signal
GENABLE
CLOCK Buffered input signal
Ground for signal (Connected to ground for IC)
GND1
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
Connector
(Notice)
Symbol
V
LED
Power supply V
CC
(CN1) GND1
GND2
A0,A1
s
Block Diagram
Luminance adjustment circuit
Input/output circuit
VR2
VR1
OSC
HC123
473
331 HC541
OUT
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
MONO-MULTI
IN
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
3 to 8 DECODER
PNP DRIVER
V D0
16bit SHIFT REGISTER/
LATCH/DRIVER
H
D0
V D15
16bit SHIFT REGISTER/
LATCH/DRIVER
16bit SHIFT REGISTER/
LATCH/DRIVER
16bit SHIFT REGISTER/
LATCH/DRIVER
16bit SHIFT REGISTER/
LATCH/DRIVER
H
D0
16bit SHIFT REGISTER/
LATCH/DRIVER
H
D15
H
D16
H
D15
H
D16
16!16
H
D31
H
D32
H
D31
H
D32
16bit SHIFT REGISTER/
LATCH/DRIVER
Dot matrix
LED
16bit SHIFT REGISTER/
LATCH/DRIVER
H
D47
H
D48
H
D47
H
D48
H
D63
H
D63
隆In
the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
(Internet)
隆Data
for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
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