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RFHCS362G Datasheet(PDF) 5 Page - Microchip Technology

Part # RFHCS362G
Description  KEELOQ짰 Code Hopping Encoder with UHF ASK/FSK Transmitter
PDF  54 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RFHCS362G Datasheet(HTML) 5 Page - Microchip Technology

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© 2011 Microchip Technology Inc.
DS41189B-page 5
rfHCS362G/362F
FIGURE 1-3:
BUILDING THE TRANSMITTED CODE WORD (ENCODER)
FIGURE 1-4:
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
Encryption 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
Encryption Key



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