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HCS500_15 Datasheet, PDF (8/42 Pages) Microchip Technology – KEELOQ® Code Hopping Decoder
HCS500
FIGURE 3-3:
SYNCHRONIZATION WINDOW
Entire Window
rotates to eliminate
use of previously
used codes
Blocked
Window
(32K Codes)
Double Operation
(resynchronization)
Window
(32K Codes)
Stored
Synchronization
Counter Value
Single Operation
Window
(16 Codes)
DS40000153E-page 8
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