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LT1540M

Sharp Electrionic Components
Part Number LT1540M
Manufacturer Sharp Electrionic Components
Description Dot Matrix LED Unit for Outdoor Use (Lamp Type)
Published Mar 22, 2005
Detailed Description Dot Matrix LED Unit for Outdoor Use LT1540M(Lamp Type) s Features ¡No. of dots : 16!16dots ¡Outline dimensions : 240!24...
Datasheet PDF File LT1540M PDF File

LT1540M
LT1540M

Overview
Dot Matrix LED Unit for Outdoor Use LT1540M(Lamp Type) s Features ¡No.
of dots : 16!16dots ¡Outline dimensions : 240!240mm ¡Dot size : 13.
0!13.
0mm ¡Dot pitch : 14.
9mm ¡Radiation color : Yellow-green+Red(High-luminosity)dichromatic type ¡Driving method : 1/8 duty dynamic drive LT1540M s Absolute Maximum Ratings Parameter Supply voltage for IC Supply voltage for LED Input voltage Turn-on time Operating temperature Storage temperature Power dissipation Symbol VCC VLED VI tON Topr Tstg P Rating -0.
3 to +6.
0 -0.
3 to +8.
5 -0.
3 to Vcc+0.
3 1 -20 to +45 -25 to +100 58 (Ta=25˚C) s Electrical Characteristics Parameter Supply voltage for IC Supply voltage for LED IC current dissipation LED current dissipation*1 (VCC=5V,VLED=8V,Ta=25˚C) Unit V V V ms ˚C ˚C W s Optical Characteristics Parameter Symbol Viewing angle 2θ1/2 Red Peak emission wavelength λp Yellow-green (Vcc=5V,VLED=8V,Ta=25˚C) TYP.
50 660 565 Unit ˚ nm Symbol MIN.
TYP.
MAX.
Unit 5.
25 V 4.
75 5.
0 VCC 8.
25 V 7.
5 8.
0 VLED -----500 mA 200 ICC -----7.
0 ILED A 5.
5 ----------VIH 3.
5 V Input voltage ----------VIL 1.
5 V ----------µA IIH 0.
1 Input current ----------IIL 0.
12 mA ----------Clock frequency 10.
0 MHz fCLK Frame frequency fFR 250 400 3 000 Hz *1 Under the condition that dichromatic all dots are lit.
s Timing Chart tSU th tWCLK CLOCK s Luminance Luminance is classified into 2 ranks shown below.
(Vcc=5V,VLED=8V,Ta=25˚C) RDATA GDATA RDATA out GDATA out VD(n+1) data td(C-L) td(L-C) VD(n+2) data Radiation color Red Yellow-green Rank 1 1 200 750 2 1 600 1 000 tdD tWL Unit cd/m 2 LATCH t=1/fosc Internal ENABLE RENABLE GENABLE ON ON ON VD(n) data ON td(E-A) ON OFF ON ON ON OFF VD(n+1) data ON td(A-E) s Terminal Functions Function Supply voltage for LED (+8V) Power Supply voltage for IC (+5V) supply Ground for IC (CN1) Ground for LED Address specification signal for column driver Serial data input for each color(H:ON, L:OFF) RDATA Shift from up to down in the unit GDATA HD16¡HD31¡HD0¡HD15 Latch s...


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