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NM95HS02EN14 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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NM95HS02EN14 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 20 page  TLD12302 February 1996 NM95HS01NM95HS02 HiSeCTM High Security Rolling Code Generator General Description The NM95HS0102 HiSeC Rolling Code Generator is a small footprint monolithic CMOS device designed to pro- vide a complete low-cost high security solution to the prob- lem of generating encrypted signals for remote keyless en- try (RKE) applications The NM95HS0102 generates a fully encoded bit stream each time one of (up to) 4 switch inputs is activated The patented coding scheme utilizes 248 possible user-pro- grammable coding combinations and features high linear complexity and correlation immunity High security is guar- anteed by generating a unique (rolling) code for each trans- mission and can be further enhanced by creating custom- ized algorithms for individual customers With this product each key can be designed to be both unique and highly secure The NM95HS0102 supports either an IR or RF signal transmitter and can be clocked with either an RC clock (NM95HS01) or a crystal oscillator (NM95HS02) The de- vice operates over a voltage range of 22V to 65V and offers a low power standby mode (k1 mA) for battery appli- cations The product is available in both 8-pin and 14-pin SO packages with 2 or 4 key switch inputs that can be used for customer presets such as seat positions and vehicle oper- ating functions such as car door lockingunlocking Patents Pending Features Y High security coding scheme with 248 combinations Y High linear complexity and correlation immunity Y 22V to 65V operation Y Less than 1 mA standby current Y Full resynchronization capability Y Unique customized algorithm option Y 13 bytes on-chip non-volatile configuration memory Y RC or XTAL clock options for to 41 MHz operation Y Supports both IR and RF signal transmission Y Selection of bit coding and transmission frame formats Y Space saving narrow body SO8 or SO14 packages Y Up to 4 key switch inputs on SO14 package Applications Y Remote Keyless Entry (RKE) applications Y Burglar alarmsgarage door openers Y Individualized recognitiontransmission systems Y Personalized consumer automotive applications Relevant Documents Y MM57HS01 datasheet Y Designing and Programming a Complete HiSeCTM- based RKE System AN-985 Y HiSeC Remote Keyless Entry Solution EncoderDecod- er Chip Set User’s Manual AN-355 Functional Block Diagram TLD12302 – 1 Note Signals shown are internal logic signals FIGURE 1 HiSeCTM and MICROWIRETM are trademarks of National Semiconductor Corporation C1996 National Semiconductor Corporation RRD-B30M66Printed in U S A |
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