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HCS412 Datasheet(PDF) 15 Page - Microchip Technology

Part # HCS412
Description  KEELOQ짰 Code Hopping Encoder and Transponder Burglar alarm systems
PDF  52 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS412 Datasheet(HTML) 15 Page - Microchip Technology

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© 2011 Microchip Technology Inc.
DS41099D-page 15
HCS412
FIGURE 3-8:
RF ENABLE/ASK/FSK OPTIONS
FIGURE 3-9:
LED OPERATION
FIGURE 3-10: LONG PREAMBLE ENABLED (LPRE)
SWITCH
S2/RFEN/LC1
DATA
S2/RFEN/LC1
DATA
TLEDON
AFSK =
0, RFEN = 1
SWITCH
AFSK = 1, RFEN =
0
TTD
Code Word
Code Word
Code Word
Code Word
Code Word
Code Word
SWITCH
LED
DATA
LED
NORMAL OPERATION
SWITCH
LOW VOLTAGE OPERATION
TLEDON
TLEDOFF
DATA
TLEDL
Code Word
Code Word
Code Word
Code Word
Code Word
Code Word
TLPRE
First Code Word
First Code Word
- Long Preamble
Second Code Word
- Normal Preamble
Third Code Word
- Normal Preamble
Consecutive Code Words
Header



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