tWCLK
td(C-L)
t dD
tWL
td(E-L)
thtsu
td(L-C)
td(E-A)
td(L-A) td(A-E)
td(L-E)
(A0 to A3)
ADDRESS
GDATA
RDATA,
CLOCK
OFF
RDATAout
GDATAout
LATCH
ENABLE
OFF
(n+1)th line's data ON
n th line's data ON
(n+1)th line's data
(n+2)th line's data
(n+1)th linen th line
t WENA
Dot Matrix LED Unit for Indoor Use LT1451ED(Chip On Board Type)
DECODER
Mono-Multi
&
SHIFT REGISTER
MATRIX
DRIVER
DRIVER
DRIVER
CN3
A0
A1
A2
A3
ENABLE
RDATA
GDATA
LATCH
CLK
CN2
LED
LATCH(G)
&
SHIFT REGISTER
LATCH(R)
VOL.1
G.ADJ
VOL.2
R.ADJ
OSC
Vcc
1K 47K
HC367
Input circuit
BUFFER
BUFFER
A0
A1
A2
A3
ENABLE
RDATA
GDATA
LATCH
CLK
■ Features
¡No. of dots : 16✕16dots
¡Outline dimensions : 96✕96mm
¡Dot size : ø5.0mm
¡Dot pitch : 6.0mm
¡Radiation color : Yellow-green+Red(dichromatic type)
¡Driving method : 1/16 duty dynamic drive
LT1451ED
■ Absolute Maximum Ratings
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
LED current dissipation
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Symbol
V
CC
VLED
VI
ILED
tON
Topr
Tstg
P
■ Optical Characteristics
Parameter
Luminance
Viewing angle
Peak emission wavelength
Red
Yellow-green
Red
Yellow-green
Symbol
V
L
1
/
2θ
λp
2
■ Terminal Functions
Connector
Power
supply
(CN1)
Symbol
VLED
VCC
GND1
GND2
A0 to A3
RDATA
Supply voltage for LED (+5V)
Supply voltage for IC (+5V)
Ground for IC
Ground for LED
Address specification signal for row driver
Serial data input for red (H=ON, L=OFF)
(Ta=25˚C)
Rating
Unit
-0.3 to +6.0
-0.3 to +6.0
-0.3 to Vcc+0.3
1
-10 to +45
-20 to +70
13
(VCC=5V,VLED=5V,Ta=25˚C)
TYP.
100
100
70
635
565
Function
V
V
V
A
ms
˚C
˚C
W
Unit
cd/m
˚
nm
■ Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
*1
LED current dissipation
Input voltage
Input current
Clock frequency
Frame frequency
Symbol
V
CC
VLED
ICC
*1
ILED
VIH
VIL
IIH
IIL
fCLK
fFR
(VCC=5V,VLED=5V,Ta=25˚C)
MAX.
TYP.
MIN.
4.75
4.5
------
------
3.5
------
------
------
-----80
5.0
5.0
25
2.0
------
------
------
------
------
------
5.25
5.25
50
2.3
------
1.5
0.1
0.12
4
625
Unit
mA
µA
mA
MH
HZ
V
V
A
V
V
Z
*1 Under the condition that dichromatic all dots are lit.
■ Timing Chart
2
■ Block Diagram
GDATA
Input
signal
(CN2)
LATCH
ENABLE
CLOCK
GND1
A0 to A3
RDATA
Output
signal
(CN3)
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
(Notice) ¡
(Internet) ¡Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
GDATA
LATCH
ENABLE
CLOCK
GND1
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.
Serial data input for yellow-green (H=ON, L=OFF)
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)
Clock signal for data transmission in the
shift-register. (L→H: serial data is shifted.)
Ground for signal
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
Buffered input signal
Ground for signal
163
3
-0.15
3
+0
2 Vcc
27.4
±0.3
P6.0✕15=90
95.7
H
±0.3
93
±0.1
D15
H
V
43.5
40
±0.1
8 ENABLE
7 LATCH
6 GDATA
3 A2
2 A1
1 A0
D0
V
4 A3
5 RDATA
Pin No.
CN3(Output signal)
10 GND1
9 CLOCK
4 A3
CN2(Input signal)
1 A0
2 A1
3 A2
26
16.5
3.96✕3=11.8
10
4
CN1
CN3 CN2
18249
1
1
±0.1
3333
2525
93
4-M3(Screw depth 6)
40
±0.1
40
3 GND1
1 VLED
Pin No.
CN1(Power supply)
40
43.5
4 GND2
5 RDATA
6 GDATA
7 LATCH
8 ENABLE
9 CLOCK
10 GND1
Pin No.
VOL.1
VOL.2
14
D15
D0
256-ø5
2.5✕9=22.5
P6.0✕15=90
95.7±0.3
Data shift direction
Name Name
Name
Pin connection
LT1451EDLT1560ED
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