LT1451ED Datasheet, PDF (1/2 Pages) Sharp Electrionic Components – Dot Matrix LED Unit for Indoor Use (Chip On Board Type)

Dot Matrix LED Unit for Indoor Use LT1451ED(Chip On Board Type)
s 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
s 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
VCC
VLED
VI
ILED
tON
Topr
Tstg
P
Rating
-0.3 to +6.0
-0.3 to +6.0
-0.3 to Vcc+0.3
1
-10 to +45
-20 to +70
13
(Ta=25˚C)
Unit
V
V
V
A
ms
˚C
˚C
W
s Optical Characteristics
Parameter
Symbol
Luminance
Red
Yellow-green
LV
Viewing angle
2θ¹/2
Peak emission wavelength
Red
Yellow-green
λp
(VCC=5V,VLED=5V,Ta=25˚C)
TYP.
Unit
100
cd/m²
100
70
˚
635
565
nm
s Terminal Functions
Connector
Power
supply
(CN1)
Symbol
VLED
VCC
GND1
GND2
A0 to A3
Function
Supply voltage for LED (+5V)
Supply voltage for IC (+5V)
Ground for IC
Ground for LED
Address specification signal for row driver
RDATA Serial data input for red (H=ON, L=OFF)
Input
signal
(CN2)
GDATA Serial data input for yellow-green (H=ON, L=OFF)
Latch signal of display data. H: Serial data is
LATCH _{converted to parallel data. L: Contents are latched.}
ENABLE ^{Controls ON/OFF of LED (H: LED OFF)}
Clock signal for data transmission in the
CLOCK _{shift-register. (L¡H: serial data is shifted.)}
GND1 Ground for signal
A0 to A3 Buffered input signal
RDATA
Input signal generated through 16-bit shift register
or buffer
Output
signal
(CN3)
GDATA
LATCH
Input signal generated through 16-bit shift register
or buffer
Buffered input signal
ENABLE Buffered input signal
CLOCK Buffered input signal
GND1 Ground for signal
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
s Electrical Characteristics
(VCC=5V,VLED=5V,Ta=25˚C)
Parameter
Supply voltage for IC
Symbol MIN. TYP. MAX. Unit
VCC
4.75 5.0 5.25 V
Supply voltage for LED
VLED
4.5 5.0
IC current dissipation^*1
ICC
------ ₂₅
LED current dissipation^*1 ILED
------ 2.0
Input voltage
VIH
3.5 ------
VIL
------ ------
Input current
IIH
------ ------
IIL
------ ------
Clock frequency
fCLK
------ ------
Frame frequency
fFR
80 ------
*1 Under the condition that dichromatic all dots are lit.
5.25 V
50 mA
2.3 A
------ V
1.5 V
0.1 µA
0.12 mA
4 MHZ
625 HZ
s Timing Chart
tsu th
tWCLK
CLOCK
RDATA,
GDATA
RDATAout
GDATAout
LATCH
ENABLE
ADDRESS
(A0 to A3)
(n+1)th line's data
t dD
tWL
td(C-L)
(n+2)th line's data
td(L-C)
n th line's data ON
td(E-L)
n th line
td(E-A)
td(L-A)
OFF
(n+1)th line's data ON
td(L-E)
(n+1)th line
td(A-E)
s Block Diagram
OFF
t WENA
CN2
A0
A1
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLK
DECODER
DRIVER
CN3
A0
A1
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLK
LED
MATRIX
VOL.1
G.ADJ
VOL.2
R.ADJ
Mono-Multi
OSC
Vcc
1K
47K
HC367
Input circuit
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devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
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