Dot Matrix LED Unit for Indoor Use LT1570VN/1570SN(Chip LED Type) Features No. of dots : 1616dots Outline dimensions : 122122mm Dot size : 3.22.4mm Dot pitch : 7.62mm Radiation color : Amber(High-luminosity)LT1570VN Sunset orange(High-luminosity)LT1570SN LT1570VN LED ON : 1/8 duty drive Input signal : 1/16 duty dynamic drive Electrical Characteristics Outline dimensions are shown on page 208, Fig.13. Absolute Maximum Ratings Parameter Supply voltage for IC Supply voltage for LED Input voltage Turn-on time Operating temperature Storage temperature Power dissipation (Ta=25C) Symbol VCC VLED VI tON Topr Tstg P Rating -0.3 to +5.5 -0.3 to +4.5 -0.3 to Vcc+0.3 1 -10 to +60 -20 to +70 9.5 Optical Characteristics Parameter LT1570VN Luminance LT1570SN Viewing angle LT1570VN Peak emission wavelength LT1570SN Unit V V V ms C C W (Vcc=5V,VLED=4V,Ta=25C) Symbol TYP 1 500 2 000 30 590 612 Lv 21/2 p Unit (VCC=5V,VLED=5V,Ta=25C) Parameter Supply voltage for IC Supply voltage for LED IC current dissipation*1 LED current dissipation*1 Symbol MIN. TYP. MAX. Unit V 5.0 VCC 5.25 4.75 V 4.0 4.25 3.75 VLED -----mA 25 50 ICC -----2.0 ILED A 1.2 ----------3.5 VIH V Input voltage ----------VIL 1.5 V ----------A IIH 1 Input current ----------IIL 0.12 mA ----------Clock frequency MHz 10 fCLK Frame frequency fFR 70 250 1 000 Hz *1 Under the condition that dichromatic all dots are lit. Timing Chart cd/g tsu tWCLK th CLOCK nm DATA HD (n+1) data tWL td (C-L) Block Diagram LATCH ENABLE ADDRESS (A0 to A3) HD (n+2) data td (L-C) tWENA HD (n) data ON OFF HD (n+1) data ON 1/fENA HD (n) HD (n+1) td (A-L) td (E-A) OUT IN LED MATRIX DATA (odd line) DATA (even line) DATA mix Internet DATA (odd line) 1616DOT CHROMATIC 16BIT SHIFT-REGISTER. AND LUMINANCE 16BIT SHIFT-REGISTER. AND LUMINANCE LATCH. DRIVER ADJUSTMENT CIRCUIT Pch FET DRIVER Parameter DATA (even line) DUTY CONVERTER (1/16 1/8 DUTY) Recommended Timing Conditions (Vcc=5.0V,Ta=25C) DATA selector LATCH. DRIVER ADJUSTMENT CIRCUIT 4 to 16 DECODER Dot Matrix LED Unit A0 A1 A2 A3 DATA NC LATCH ENABLE CLOCK A0 A1 A2 A3 DATA NC LATCH ENABLE CLOCK Notice td (A-E) Input/output circuit 331 HC367 473 Clock pulse width Latch pulse width Enable pulse width Data setup time Data hold time Clock-latch time Latch-clock time Enable-address time Address-enable time Latch-address time Frame frequency Enable frequency Symbol tWCLK tWL tWENA tSU th td (C-L) td (L-C) td (E-A) td (A-E) td (A-L) fFR fENA Rating MIN. TYP. MAX. 50 --- --- 100 --- --- 4 --- --- 60 --- --- 20 --- --- 100 --- --- 100 --- --- 2 --- --- 2 --- --- 0 --- --- 70 250 1 000 --- --- 16 Unit Remarks ns ns s ns ns ns ns s s s Hz kHz 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 address for Electronic Components Group http://www.sharp.co.jp/ecg/ 197