NM95HS02 Datasheet | National Semiconductor

.. NM95HS01 NM95HS02 Hi Se C High Security Rolling Code Generator February 1996 NM95HS01 NM95HS02 Hi Se C TM High Security Rolling Code Generator General Description The NM95HS01 02 Hi Se C Rolling Code Generator is a small footprint monolithic CMOS device designed to provide a plete low-cost high security solution to the problem of generating encrypted signals for remote keyless entry (RKE) applications The NM95HS01 02 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-programmable coding binations and Features high linear plexity and correlation immunity High security is guaranteed by generating a unique (rolling) code for each transmission and can be further enhanced by creating customized algorithms for individual customers With this product each key can be designed to be both unique and highly secure The NM95HS01 02 supports either an IR or RF signal transmitter and can be clocked with either an RC clock (NM95HS01) or a crystal oscillator (NM95HS02) The device operates over a voltage range of 2 2V to 6 5V and offers a low power standby mode (k1 m A) for battery applications 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 operating functions such as car door locking unlocking Features Y Y Y Y Y Y Y Y Y Y Y Y High security coding scheme with 248 binations High linear plexity and correlation immunity 2 2V to 6 5V operation Less than 1 m A standby current Full resynchronization capability Unique customized algorithm option 13 bytes on-chip non-volatile configuration memory RC or XTAL clock options for to 4 1 MHz operation Supports both IR and RF signal transmission Selection of bit coding and transmission frame formats Space saving narrow body SO8 or SO14 packages Up to 4 key switch inputs on SO14 package Applications...