HCS201_11 Datasheet, PDF (17/36 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder 34-bit fixed code (28-bit serial number

FIGURE 7-3:
SYNCHRONIZATION WINDOW
Entire Window
rotates to eliminate
use of previously
used codes
Blocked
Window
(32K Codes)
Double Operation
(resynchronization)
Window
(32K Codes)
HCS201
Stored
Synchronization
Counter Value
Single Operation
Window
(16 Codes)
© 2011 Microchip Technology Inc.
DS41098D-page 17