Dot Matrix LED Unit for Indoor Use LT1451ED(Chip On Board Type)
■ Features
¡No. of dots : 16✕16dots
¡Outline dimensions : 96✕96mm
¡Dot size : ø5.0mm
¡Dot pitch : 6.0mm
LT1451ED
¡Radiation color : Yellow-green+Red(dichromatic type)
¡Driving method : 1/16 duty dynamic drive
■ Electrical Characteristics
(VCC=5V,VLED=5V,Ta=25˚C)
■ Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Symbol
VCC
VLED
ICC
ILED
VIH
VIL
IIH
IIL
Unit
V
V
mA
A
V
MIN. TYP. MAX.
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
Symbol
VCC
VLED
VI
Rating
Unit
V
V
V
A
ms
˚C
˚C
W
Supply voltage for IC
Supply voltage for LED
IC current dissipation*1
LED current dissipation*1
4.75
4.5
------
5.0
5.0
25
5.25
5.25
50
-0.3 to +6.0
-0.3 to +6.0
-0.3 to Vcc+0.3
------
3.5
2.0
2.3
------
1.5
0.1
0.12
4
LED current dissipation
Turn-on time
ILED
------
------
------
------
------
------
Input voltage
Input current
t
ON
1
------
------
------
------
80
V
Operating temperature
Storage temperature
Power dissipation
Topr
Tstg
P
-10 to +45
-20 to +70
13
µA
mA
MHZ
HZ
fCLK
fFR
Clock frequency
Frame frequency
625
*1 Under the condition that dichromatic all dots are lit.
(VCC=5V,VLED=5V,Ta=25˚C)
■ Optical Characteristics
■ Timing Chart
Parameter
Symbol
Unit
TYP.
100
100
70
Red
Yellow-green
Viewing angle
Red
2
tsu
th
t
WCLK
Luminance
cd/m
LV
/
CLOCK
2θ1
λp
2
˚
RDATA,
GDATA
635
565
(n+1)th line's data
t dD
(n+2)th line's data
td(L-C)
Peak emission wavelength
nm
Yellow-green
tWL
RDATAout
GDATAout
td(C-L)
LATCH
■ Terminal Functions
n th line's data ON
td(E-L)
OFF
(n+1)th line's data ON
td(L-E)
OFF
t WENA
ENABLE
Symbol
Function
Connector
Supply voltage for LED (+5V)
Supply voltage for IC (+5V)
Ground for IC
Ground for LED
Address specification signal for row driver
VLED
VCC
GND1
GND2
A0 to A3
n th line
td(E-A)
(n+1)th line
td(A-E)
ADDRESS
(A0 to A3)
Power
supply
(CN1)
td(L-A)
■ Block Diagram
Serial data input for red (H=ON, L=OFF)
RDATA
GDATA
LATCH
ENABLE
CLOCK
CN2
CN3
A0
A1
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLK
A0
A1
Serial data input for yellow-green (H=ON, L=OFF)
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLK
Input
signal
(CN2)
Latch signal of display data. H: Serial data is
converted to parallel data. L: Contents are latched.
Controls ON/OFF of LED (H: LED OFF)
DECODER
Clock signal for data transmission in the
shift-register. (L→H: serial data is shifted.)
Ground for signal
DRIVER
GND1
A0 to A3
LED
MATRIX
Buffered input signal
Input signal generated through 16-bit shift register
or buffer
Input signal generated through 16-bit shift register
or buffer
Buffered input signal
Buffered input signal
RDATA
GDATA
VOL.1
G.ADJ
VOL.2
R.ADJ
Output
signal
(CN3)
Mono-Multi
OSC
LATCH
ENABLE
CLOCK
GND1
Buffered input signal
Ground for signal
Vcc
Each signal is used as input signal for next unit.
1K
47K
* As for the terminal number, refer to the outline dimensions.
HC367
Input circuit
(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/)
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