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Access control systems
Automotive immobilizers
Electronic door locks (Home/Office/Hotel)
Burglar alarm systems
Proximity access control
Wakeup
Logic
Control Logic
and Counters
Encryption
Logic
Transponder
Circuitry
HCS410 IMMOBILIZER
TRANSPONDER
Crypto Read/Write
Transponder
Challenge
Immobilizer
Base Station Unit
PPM
Detector
PPM
Encoder
125kHZ
L
RES
C
RES
125KHz AM
GENERAL DESCRIPTION
The HCS410/WM is a transponder device designed for
secure entry systems. The HCS410/WM utilizes bi-
directional challenge-and-response for logical and
physical access control.
The HCS410/WM integrates an LC-resonant circuit
with the HCS410 silicon into a leadless SOT-385 pack-
age.
Response
K
EE
L
OQ
is a registered trademark of Microchip Technology, Inc.
Microchip鈥檚 Secure Data Products are covered by some or all of the following patents:
Code hopping encoder patents issued in Europe, U.S.A., and R.S.A. 鈥?U.S.A.: 5,517,187; Europe: 0459781; R.S.A.: ZA93/4726
Secure learning patents issued in the U.S.A. and R.S.A. 鈥?U.S.A.: 5,686,904; R.S.A.: 95/5429
*Secure Learn patent pending.
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2001 Microchip Technology Inc.
Preliminary
DS41116B-page 1
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