參數(shù)資料
型號(hào)： LT1448MA
廠商： Sharp Corporation
英文描述： Dot Matrix LED Unit for Outdoor Use (Lamp Type,Water-proof Type)
中文描述： 點(diǎn)陣LED單元（燈型，防水型戶外使用）
文件頁數(shù)： 1/2頁
文件大?。?/td> 293K
代理商： LT1448MA
(Notice)
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)
Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
(K-L)
t d
ON
1/fosc
V
D
(n) data ON
t d
WKNA
(K-A)
t d(A-K)
Internal
ENABLE
out
out
t
CLOCK
RDATA
RDATA
GDATA
LATCH
RENABLE
ADDRESS
(A0, A1)
V
D
(n+1) data ON
V
D
(n+1)
V
D
(n)
OFF
t d(L-A)
ON
(L-K)
OFF
ON
V
D
(N+1)
V
D
(n+2) data
t d
t d
t dD
t
WL
t
S U
t h
t
WCLK
(C-L)
(L-C)
t d
Parameter
Viewing angle(Horizontal)
Peak emission wavelength
Symbol
2
θ
1
/
2
λ
p
TYP
70
660
565
Unit
nm
(V
CC
=5V,V
LED
=4.5V,Ta=25C)
Red
Yellow-green
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
Unit
V
V
V
ms
C
C
W
(Ta=25C)
169
I
Absolute Maximum Ratings
I
Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
LED current dissipation
I
Timing Chart
I
Block Diagram
I
Optical Characteristics
LT1448MA
Dot Matrix LED Unit for Outdoor Use LT1448MA(Lamp Type,Water-proof Type)
I
Features
No. of dots : 16
16dots
Outline dimensions : 160
160mm
Dot size : 7.5mm(Using oval lamp)
Dot pitch : 9.9mm
Radiation color : Yellow-green+Red(High-luminosity)dichromatic type
Driving method : 1/4 duty dynamic drive
I
Terminal Functions
Connector
Symbol
V
LED
V
CC
GND1
GND2
A0,A1
*1
*1
Input voltage
Input current
Clock frequency
Frame frequency
*1 Under the condition that dichromatic all dots are lit.
Symbol
V
DD
V
LED
I
DD
I
LED
V
IH
V
IL
I
IH
I
IL
f
CLK
f
FR
MIN.
4.75
4.25
------
------
3.5
------
------
------
------
250
TYP.
5.0
4.5
400
6.0
------
------
------
------
------
400
MAX.
5.25
4.75
800
7.0
------
1.5
0.1
0.12
10
3 000
Unit
V
V
mA
A
V
V
μ
A
mA
MH
Z
H
Z
(V
CC
=5V,V
LED
=4.5V,Ta=25C)
Power supply
(CN1)
Input signal
(CN2)
Output signa
l
(CN3)
RDATA
GDATA
LATCH
RENABLE
GENABLE
CLOCK
GND1
A0,A1
RDATA
GDATA
LATCH
RENABLE
GENABLE
CLOCK
GND1
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)
Shift from up to down in the unit
(H
D48
/
H
D63
/
H
D32
/
H
D47
/
H
D16
/
H
D31
/
H
D0
/
H
D15)
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)
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
MONO-MULTI
473
331 HC541
Luminance adjustment circuit
Input/output circuit
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
VR1
H
D0
H
D48
OUT
IN
OSC
HC123
VR2
PNP DRIVER
3 to 8 DECODER
A0
A1
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
H
H
D15
D16
H
H
D31
D32
H
D47
H
D63
1
1
1
1
1
1
1
1
H
D0
H
D48
H
H
D15
D16
H
H
D31
D32
H
D47
H
D63
16
16
Dot matrix
LED
V D0
V D15
I
Luminance
Luminance is classified into 2 ranks shown below.
Radiation color
Red
Yellow-green
1
1 100
700
2
1 300
800
Unit
cd/m
2
(V
CC
=5V,V
LED
=4.5V,Ta=25C)
Rank
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