LT1448MA Sharp Electrionic Components, LT1448MA Datasheet
LT1448MA
Manufacturer Part Number
LT1448MA
Description
Dot Matrix LED Unit for Outdoor Use (Lamp Type/Water-proof Type)
Manufacturer
Sharp Electrionic Components
Datasheet
1.LT1448MA.pdf
(2 pages)
(Notice)
(Internet) ¡Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
Dot Matrix LED Unit for Outdoor Use LT1448MA(Lamp Type,Water-proof Type)
¡No. of dots : 16 16dots
¡Outline dimensions : 160 160mm
¡Dot size : ø7.5mm(Using oval lamp)
¡Dot pitch : 9.9mm
¡Radiation color : Yellow-green+Red(High-luminosity)dichromatic type
¡Driving method : 1/4 duty dynamic drive
Luminance is classified into 2 ranks shown below.
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
Peak emission wavelength
Power supply
Output signal
Connector
Radiation color
Input signal
Viewing angle(Horizontal)
(CN1)
(CN2)
(CN3)
Yellow-green
Supply voltage for IC
Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Features
Absolute Maximum Ratings
Optical Characteristics
Luminance
Terminal Functions
Red
¡In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
Parameter
Parameter
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
V
V
GND1
GND2
A0,A1
RDATA
GDATA
LATCH
RENABLE
GENABLE
CLOCK
GND1
A0,A1
RDATA
GDATA
LATCH
RENABLE
GENABLE
CLOCK
GND1
Symbol
LED
CC
Yellow-green
Red
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)
Shift from up to down in the unit
(H
Latch signal of display data
L/H: Contents of shift register are latched.
Controls ON/OFF of each color of LED
(H: LED OFF)
Clock signal for data transmission in the shift-
register.(L/H: serial data is shifted.)
Ground for signal (Connected to ground for IC)
Buffered input signal
Input signal generated through 64-bit shift register or
buffer
Buffered input signal
Buffered input signal
Buffered input signal
Ground for signal (Connected to ground for IC)
D48
1 100
700
/H
1
Symbol
2
D63
Symbol
V
V
V
t
T
T
P
1
p
ON
/
opr
stg
DD
LED
I
2
/H
Rank
D32
/H
Function
D47
-0.3 to Vcc+0.3
-0.3 to +5.5
-0.3 to +5.0
-20 to +100
(V
(V
-10 to +45
/H
TYP
Rating
660
CC
565
CC
70
1 300
800
D16
38
=5V,V
=5V,V
1
2
/H
D31
LED
LED
/H
=4.5V,Ta=25˚C)
=4.5V,Ta=25˚C)
D0
(Ta=25˚C)
/H
Unit
ms
˚C
˚C
W
cd/m
V
V
V
Unit
Unit
nm
D15)
˚
2
*1 Under the condition that dichromatic all dots are lit.
Supply voltage for IC
Supply voltage for LED
IC current dissipation
LED current dissipation
Input voltage
Input current
Clock frequency
Frame frequency
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
Electrical Characteristics
Timing Chart
Block Diagram
(A0, A1)
CLOCK
RDATA
GDATA
RDATA
GDATA
LATCH
Internal
ENABLE
RENABLE
GENABLE
ADDRESS
Parameter
IN
out
out
t
S U
t h
t d D
V
V
V
*1
D
D
D
(n)
*1
(N+1)
(n) data ON
ON
1/fosc
H
H
H
H
H
H
H
H
D15
D16
D31
D32
D47
D48
D63
D0
Luminance adjustment circuit
V D0
t d
t d
VR2
MONO-MULTI
(K-A)
t d
(K-L)
Symbol
Dot matrix
PNP DRIVER
3 to 8 DECODER
(C-L)
OFF
V
V
I
I
V
V
I
I
f
f
16 16
DD
LED
IH
IL
CLK
FR
DD
LED
IH
IL
VR1
t d
t
WL
(L-C)
LED
t d(L-A)
HC123
OSC
t d
t d (A-K)
V D15
LT1448MA
ON
(L-K)
H
H
H
H
H
H
H
H
MIN.
D0
4.75
4.25
D15
D16
D31
D32
D47
D48
D63
250
------
------
------
------
------
------
3.5
V
(V
D
(n+1) data ON
Input/output circuit
473
V
CC
D
t
(n+1)
WCLK
V
=5V,V
331 HC541
D
TYP.
(n+2) data
OFF
400
400
------
------
------
------
------
5.0
4.5
6.0
LED
t
MAX.
WKNA
3 000
=4.5V,Ta=25˚C)
5.25
4.75
0.12
800
------
7.0
1.5
0.1
10
OUT
ON
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
MH
Unit
mA
mA
H
V
V
A
V
V
A
Z
Z
16
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