HCS201_11 MICROCHIP [Microchip Technology], HCS201_11 Datasheet - Page 4

• Manufacturer Part Number: HCS201_11
• Manufacturer: MICROCHIP [Microchip Technology]

HCS201
FIGURE 1-2:
FIGURE 1-3:
NOTE: Circled numbers indicate the order of execution.
DS41098D-page 4
EEPROM Array
Serial Number
Sync Counter
Crypt Key
5
Perform Function
Indicated by
Button Press
button press
Information
BUILDING THE TRANSMITTED CODE WORD (ENCODER)
BASIC OPERATION OF RECEIVER (DECODER)
1
2
Received Information
Serial Number
Check for
Match
Synchronization
Encrypted Data
Decrypted
K
Decryption
Algorithm
32 Bits of
Counter
EE
Encryption
Algorithm
K
L
3
EE
OQ
Button Press
Information
L
®
OQ
®
Transmitted Information
Serial Number
4
Manufacturer Code
EEPROM Array
Check for
Serial Number
Match
Sync Counter
Crypt Key
© 2011 Microchip Technology Inc.
Encrypted Data
32 Bits