Dot Matrix LED Unit for Outdoor Use LT1474M(Lamp Type,Water-proof Type)
s
Features
隆No.
of dots : 16!16dots
隆Outline
dimensions : 320!320mm
隆Dot
size : 18!18mm(Using oval lamp)
隆Dot
pitch : 20.0mm
隆Radiation
color : Yellow-green+Red(High-luminosity)dichromatic type
隆Driving
method : 1/16 duty dynamic drive
LT1474M
s
Absolute Maximum Ratings
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
*1
Turn-on time
Operating temperature
Storage temperature
Power dissipation
*1 V
I
<Vcc at Vcc鈮?
Symbol
V
CC
V
LED
V
1
t
ON
T
opr
T
stg
P
Rating
-0.3 to +6.0
-0.3 to +9.5
-0.3 to V
CC
+0.3
1
-20 to +75
-25 to +100
176
(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
=9V,Ta=25藲C)
Unit
V
V
V
ms
藲C
藲C
W
Symbol
MIN. TYP. MAX. Unit
4.75
L
CC
5.0
5.25
V
8.75
9.0
V
LED
9.25
V
------
500
750
I
CC
mA
------
12
18
I
LED
A
3.5
------
------
V
IH
V
Input voltage
------
------
1.5
V
IL
V
------
------
0.1
I
IH
碌A(chǔ)
Input current
------
------
0.12
I
IL
mA
Clock frequency
------
------
10
f
CLK
MH
Z
*1 Under the condition that dichromatic all dots are lit.
s
Optical Characteristics
Parameter
Red
Yellow-green
Viewing angle[Horizontal(Red/Yellow-green)]
Red
Peak emission wavelength
Yellow-green
Luminance
Symbol
Lv
2胃
1
/
2
位p
s
Timing Chart
(V
CC
=5V,V
LED
=9V,Ta=25藲C)
TYP.
1 900
1 500
60/70
660
565
Unit
cd/m
藲
nm
2
tsu
CLOCK
RDATA
GDATA
th
t
WCLK
V
D
(n+1) data
RDATA out
GDATA out
LATCH
td
D
td(C-L)
td(L-C)
t WL
V
D
(n+2) data
s
Terminal Functions
Connector
Power
supply
(CN1)
Function
Supply voltage for LED(+9V)
Supply voltage for IC(+5V)
Ground for IC
Ground for LED
Address specification signal for row driver
Serial data input for red
RDATA
(H=ON, L=OFF)
Serial data input for yellow-green
GDATA
(H=ON, L=OFF)
LATCH Latch signal of display data
RENABLE Controls ON/OFF of LED
GENABLE (H: LED OFF)
Clock signal for data transmission in the shift-
CLOCK register.(L/H: serial data is shifted.)
Symbol
V
LED
V
CC
GND1
GND2
A0 to A3
RENABLE
GENABLE
ADDRESS
(A0 to A3)
V
D
(n) data ON
td(E-A)
V
D(
n)
V
D
(n+1) data ON
td(A-E)
t
WENA
V
D(
n+1)
td(A-L)
s
Block Diagram
OUT
A0
A1
A2
A3
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
RENABLE
NC
IN
A0
A1
A2
A3
RDATA
GDATA
LATCH
GENABLE
CLOCK
GND1
RENABLE
NC
GATE
2TO 4DECODER
PNP DRIVER
Input
signal
(CN2)
Luminance adjustment circuit
RADJ
Luminance adjustment circuit
RADJ
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
VD7
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD15
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD15
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD15
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD15
!2
VD15
!2
VD15
!2
VD15
!2
VD7
VD8
VD7
VD8
VD7
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
DATASELECTOR
Ground for signal
GND1
A0 to A3 Buffered input signal
Input signal generated through 16-bit shift
RDATA
register or buffer
Input signal generated through 16-bit shift
Output GDATA register or buffer
signal
LATCH Buffered input signal
(CN3)
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.
(Notice)
16!16 DOT
DICHROMATIC
LEDMATRIX
VD15
VD0
VD7
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
!2
VD7
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
!2
VD7
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD0
!2
VD7
8BIT SHIFT-REGISTER
LATCH AND DRIVER
!2
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
VD8
8BIT SHIFT-REGISTER
LATCH AND DRIVER
GADJ
Luminance adjustment circuit
GADJ
Luminance adjustment circuit
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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