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HCS515-SL Datasheet

  • HCS515-SL

  • Consumer IC

  • 32頁(yè)

  • ETC

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HCS515
K
EE
L
OQ
廬
Code Hopping Decoder
FEATURES
Security
鈥?Encrypted storage of manufacturer鈥檚 code
鈥?Encrypted storage of encoder decryption keys
鈥?Up to seven transmitters can be learned code
hopping technology
鈥?Normal and secure learning mechanisms
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 code hopping system and high security learning
mechanisms to make this a canned solution when used
with the HCS encoders to implement a unidirectional
remote and access control systems. The HCS515 can
be used as a stand-alone decoder or in conjunction
with a microcontroller.
Operating
鈥?4.5V 鈥?5.5V operation
鈥?Internal oscillator
鈥?Auto bit rate detection
PACKAGE TYPE
PDIP, SOIC
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
Other
NC
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Stand-alone decoder
Internal EEPROM for transmitter storage
Synchronous serial interface
1 Kbit user EEPROM
14-pin DIP/SOIC package
V
DD
S1
S0
MCLR
HCS515
Typical Applications
NC
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Automotive remote entry systems
Automotive alarm systems
Automotive immobilizers
Gate and garage openers
Electronic door locks
Identity tokens
Burglar alarm systems
BLOCK DIAGRAM
RFIN
Reception Register
DECRYPTOR
EE_DAT
Internal
EEPROM
CONTROL
EE_CLK
S_DAT
S_CLK
S0
S1
MCLR
Compatible Encoders
All encoders and transponders configured for the fol-
lowing setting:
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
PWM modulation format (1/3-2/3)
T
E
in the range from 100
碌s
to 400
碌s
10 x T
E
Header
28-bit Serial Number
16-bit Synchronization counter
Discrimination bits equal to Serial Number 8 LSbs
66- to 69-bit length code word.
OSCILLATOR
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
4.5V 鈥?5.5V. The decoder employs automatic bit rate
detection, which allows it to compensate for wide vari-
漏
2002 Microchip Technology Inc.
DS40183D-page 1

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