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HCS412SN Datasheet(PDF) 15 Page - Microchip Technology

Part # HCS412SN
Description  KEELOQ Code Hopping Encoder and Transponder
PDF  44 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS412SN Datasheet(HTML) 15 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
Preliminary
DS41099C-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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