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HCS320 Scheda tecnica(PDF) 4 Page - Microchip Technology

Il numero della parte HCS320
Spiegazioni elettronici  KEELOQ Code Hopping Encoder
PDF  32 Pages
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Produttore elettronici  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS320 Scheda tecnica(HTML) 4 Page - Microchip Technology

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HCS320
DS41097C-page 4
© 2001 Microchip Technology Inc.
FIGURE 1-2:
BUILDING THE TRANSMITTED CODE WORD (ENCODER)
FIGURE 1-3:
BASIC OPERATION OF RECEIVER (DECODER)
NOTE: Circled numbers indicate the order of execution.
Button Press
Information
EEPROM Array
32 Bits
Encrypted Data
Serial Number
Transmitted Information
Crypt Key
Sync Counter
Serial Number
KEELOQ
Encryption
Algorithm
Button Press
Information
EEPROM Array
Manufacturer Code
32 Bits of
Encrypted Data
Serial Number
Received Information
Decrypted
Synchronization
Counter
Check for
Match
Sync Counter
Serial Number
KEELOQ
Decryption
Algorithm
1
3
4
Check for
Match
2
Perform Function
Indicated by
button press
5
Crypt Key



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