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HCS515 Datasheet

  • HCS515

  • KEELOQ® Code Hopping Decoder

  • 585.45KB

  • 32页

  • Microchip   Microchip

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M
FEATURES
Security
鈥?/div>
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Encrypted storage of manufacturer鈥檚 code
Encrypted storage of encoder decryption keys
Up to seven transmitters can be learned
K
EE
L
OQ
code hopping technology
Normal and secure learning mechanisms
HCS515
Code Hopping Decoder
PACKAGE TYPE
PDIP, SOIC
NC
NC
Vdd
S0
S1
MCLR
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
NC
Vss
RF_IN
S_CLK
S_DAT
NC
HCS515
Operating
鈥?3.0V鈥?.5V operation
鈥?Internal oscillator
鈥?Auto bit rate detection
Other
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鈥?/div>
鈥?/div>
鈥?/div>
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Stand-alone decoder
Internal EEPROM for transmitter storage
Synchronous serial interface
1 Kbit user EEPROM
14-pin DIP/SOIC package
BLOCK DIAGRAM
RFIN
67-bit Reception Register
DECRYPTOR
EE_DAT
Internal
EEPROM
CONTROL
EE_CLK
S_DAT
S_CLK
S0
S1
MCLR
Typical Applications
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Automotive remote entry systems
Automotive alarm systems
Automotive immobilizers
Gate and garage openers
Electronic door locks
Identity tokens
Burglar alarm systems
OSCILLATOR
Compatible Encoders
鈥?HCS200, HCS300, HCS301, HCS360, HCS361,
HCS410 (PWM Mode)
DESCRIPTION
The Microchip Technology Inc. HCS515 is a code hop-
ping decoder designed for secure Remote Keyless
Entry (RKE) systems. The HCS515 utilizes the pat-
ented K
EE
L
OQ
code hopping system and high security
learning mechanisms to make this a canned solution
when used with the HCS encoders to implement a uni-
directional remote and access control systems. The
HCS515 can be used as a stand-alone decoder or in
conjunction with a microcontroller.
The manufacturer鈥檚 code, encoder decryption keys,
and synchronization information are stored in
encrypted form in internal EEPROM. The HCS515
uses the S_DAT and S_CLK inputs to communicate
with a host controller device.
The HCS515 operates over a wide voltage range of
3.0 volts to 5.5 volts. The decoder employs automatic
bit-rate detection, which allows it to compensate for
wide variations in transmitter data rate. The decoder
contains sophisticated error checking algorithms to
ensure only valid codes are accepted.
The K
EE
L
OQ
name, K
EE
L
OQ
logo, and logotype are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries.
*Code hopping patents issued in Europe, U. S. A. and R. S.鈥擴S:5,517,187; Europe: 0459781
漏
1998 Microchip Technology Inc.
Preliminary
DS40183A-page 1

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