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   HCS300 Datasheet  
 
  
The HCS300 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS300 utilizes Microchip’s patented KEELOQ® hopping technology, which incorporates high security, a small package outline and low cost to make this device a perfect solution for unidirectional remote keyless entry systems and access control systems. The HCS300 combines a 32-bit hopping code generated by a non-linear encryption algorithm, with a 28-bit serial number and 6 status bits to create a 66-bit transmission stream. The length of the transmission eliminates the threat of code scanning and the code hopping mechanism makes each transmission unique, thus rendering code capture and re-send (code grabbing) schemes useless. The encryption key, serial number, and configuration data are stored in EEPROM, which is not accessible via any external connection. This makes the HCS300 a very secure unit. The HCS300 provides an easy-to-use serial interface for programming the necessary security keys, system parameters, and configuration data. The encryption keys and code combinations are programmable but read-protected. The HCS300 operates over a wide voltage range of 2.0V to 6.3V and has four button inputs in an 8-pin configuration. This allows the system designer the freedom to utilize up to 15 functions. Additional features include an LED Drive, Overflow bits, Time-out, and Battery low indicator. The HCS301 operates in a voltage range of 2.0V to 6.3V.  
  
 参数名称  数值  
 Protocols  1  
 Transmission Code Length Bits  66  
 Other Features  LED Drive, Overflow bits, Time-out, Battery low indicator  
 Seed Length   32  
 Code Hoppings Bits  32  
 Operating Voltage (V)  2.0 to 6.3  
 Tunable OSC  No  
 Function Codes  15  
 CRC  No  
  
     特性  
LED Drive, Overflow bits, Time-out, Battery Low Indicator 
 
 
 
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