LM-2256 Series LED displays 16 x 16 matrix displays LM-2256 Series zDimensions (Unit: mm) Single color type 256-φ2 MAX 40.64 P2.54×15=38.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P O N Pin No32 M L Pin No20 K J I H zApplication Light sources for displays G F Pin No13 E D Pin No1 7.62 7.62 12.7 12.7 Pin No21 P2.54×15=38.1 MAX 40.64 The LM-2256 series are 16 x 16 matrix displays which can be used in a wide variety of applications, including alphabet, numeric, symbol, and graphic displays. Red is available, as well as a dual-color red / green type. Pin No12 C B A ±0.7 φ0.5 P2.54×14=35.56 Part No. LM-2256LB1 505K S1 Lot No. rank Dual color type 256-φ2 MAX 40.64 P2.54×15=38.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin No1 Pin No36 Pin No24 7.62 7.62 12.7 12.7 Pin No13 Pin No48 P2.54×15=38.1 MAX 40.64 Pin No37 Pin No25 P O N M L K J I H G F E D C B A Pin No12 4 ±0.7 3.7 5.5 φ0.5 P2.54×14=35.56 1Pin Mark 505K Lot No. LM-2256MUB zFeatures 1) 16 x 16 dot matrix Circular emitters. 2) External dimensions : 4.064 x40.64 x 5.5mm 3) Emitters : Circular, 2.0mm diameter 4) Black package. 4 3.7 5.5 Part No. Tolerance are + − 0.25 unless other wise noted Rev.B 1/4 LM-2256 Series LED displays zSelection guide Emitting color Red Red / Green − LM-2256MUB LM-2256LB1 − Common Anode Cathode zPin assignments (Top view) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P O N M L K J I H G F E D C B A Pin No.21 Pin No.13 Pin No.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin No.32 Pin No.20 Pin No.37 Pin No.25 Pin No.13 Pin No.12 Pin No.1 P O N M L K J I H G F E D C B A Single color type Pin No.48 Pin No.36 Pin No.24 Pin No.12 Dual color type zInternal circuit schematic 1 2 3 4 15 16 G1 R1 G2 R2 P P O O B B A A Single color type G32 R32 GREEN RED Dual color type Rev.B 2/4 LM-2256 Series LED displays zPin assignment table Single-color type Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Dual – color type Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function A Cathode C Cathode D Cathode B Cathode 9 Anode 10 Anode 11 Anode 12 Anode 13 Anode 14 Anode 15 Anode 16 Anode H Cathode F Cathode E Cathode G Cathode Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Function J Cathode L Cathode K Cathode I Cathode 1 Anode 2 Anode 3 Anode 4 Anode 5 Anode 6 Anode 7 Anode 8 Anode O Cathode M Cathode N Cathode P Cathode Function A Cathode C Cathode D Cathode B Cathode G9 Anode G10 Anode G11 Anode G12 Anode G13 Anode G14 Anode G15 Anode G16 Anode H Cathode F Cathode E Cathode G Cathode R9 Anode R10 Anode R11 Anode R12 Anode R13 Anode R14 Anode R15 Anode R16 Anode Pin No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Function R1 Anode R2 Anode R3 Anode R4 Anode R5 Anode R6 Anode R7 Anode R8 Anode J Cathode L Cathode K Cathode I Cathode G1 Anode G2 Anode G3 Anode G4 Anode G5 Anode G6 Anode G7 Anode G8 Anode O Cathode M Cathode N Cathode P Cathode zAbsolute maximum ratings (Ta=25°C) Single – color type Parameter Symbol LB1 Unit Red PD 50 mW/dot Forward current IF 20 mA/dot Peak forward current IFP 60∗ mA/dot Power dissipation VR 3 V Operating temperature Topr −20 to +60 C Storage temperature Tstg −25 to +85 C Reverse voltage ∗ Pulse width 1msec duty 1 / 16 Dual – color type Parameter Symbol MUB Unit Red Green Power dissipation PD 42 42 mW/dot Forward current IF 15 15 mA/dot Peak forward current IFP 60∗ 60∗ mA/dot Reverse voltage VR 4 4 V Operating temperature Topr −20 to +50 C Storage temperature Tstg −30 to +75 C ∗Pulse width 1msec duty 1 / 16 Rev.B 3/4 LM-2256 Series LED displays zElectrical and optical characteristics (Ta=25°C) Single – color type LB1 Parameter Symbol Conditions Red Unit Min. Typ. Max. Forward voltage VF IF=20mA − 1.75 2.5 V Forward current IR VR=3V − − 100 µA Peak wavelength λP IF=20mA − 660 − nm Spectral halfpower bandwidth ∆λ IF=20mA − 25 − nm Not designed for radiation resistance. MB Parameter Symbol Conditions Green Unit Min. Typ. Max. Forward voltage VF IF=10mA − 2.1 2.8 V Forward current IR VR=3V − − 100 µA Peak wavelength λP IF=10mA − 563 − nm Spectral halfpower bandwidth ∆λ IF=10mA − 40 − nm Not designed for radiation resistance. Dual – color type MUB Parameter Symbol Conditions Red Unit Green Min. Typ. Max. Min. Typ. Max. Forward voltage VF IF=10mA − 2 2.8 − 2.1 2.8 Reverse current IR VR=3V − − 100 − − 100 µA Peak wavelength Spectral halfpower bandwidth λP IF=10mA − 635 − − 563 − nm ∆λ IF=10mA − 40 − − 40 − nm V Not designed for radiation resistance. zLuminous intensity Color Red Type Min. Typ. Max. Unit LB1 36 72 − mcd 0.22 0.63 − mcd 0.56 1.6 − mcd Red Green MUB Note : Measured at IF = 10mA (LB1 : IF=20mA) Rev.B 4/4 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.1