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HCS500-IP PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 HCS500-IP
部品説明 KEELOQ CODE HOPPING ENCODER
メーカ Microchip Technology
ロゴ Microchip Technology ロゴ 



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HCS500-IP Datasheet, HCS500-IP PDF,ピン配置, 機能
M
HCS500
Code Hopping Decoder
FEATURES
Security
• Encrypted storage of manufacturer’s code
• Encrypted storage of encoder keys
• Up to seven transmitters can be learned
• KEELOQ code hopping technology
• Normal and secure learning mechanisms
Operating
• 3.0V—5.5V operation
• Internal oscillator
• Auto bit rate detection
Other
• Stand-alone decoder chipset
• External EEPROM for transmitter storage
• Synchronous serial interface
• 1 Kbit user EEPROM
• 8-pin DIP/SOIC package
Typical Applications
• Automotive remote entry systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage openers
• Electronic door locks
• Identity tokens
• Burglar alarm systems
Compatible Encoders
• HCS200, HCS300, HCS301, HCS360,
HCS410 (PWM Mode)
DESCRIPTION
The Microchip Technology Inc. HCS500 is a code hop-
ping decoder designed for secure Remote Keyless
Entry (RKE) systems. The HCS500 utilizes the pat-
ented KEELOQ 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
HCS500 can be used as a stand-alone decoder or in
conjunction with a microcontroller.
PACKAGE TYPE
PDIP, SOIC
VDD
EE_CLK
EE_DAT
MCLR
1
2
3
4
8 VSS
7 RFIN
6 S_CLK
5 S_DAT
BLOCK DIAGRAM
RFIN
67-bit Reception Register
External
EEPROM
EE_DAT
EE_CLK
CONTROL
DECRYPTOR
S_DAT
S_CLK
OSCILLATOR
MCLR
The manufacturer’s code, encoder keys, and synchro-
nization information are stored in encrypted form in
external EEPROM. The HCS500 uses the S_DAT and
S_CLK inputs to communicate with a host controller
device.
The HCS500 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.
KEELOQ is a registered trademark of Microchip Technology Inc.
*Code hopping patents issued in Europe, U.S.A; and R.S.—US:5,517,187; Europe: 0459781
© 1997 Microchip Technology Inc.
Preliminary
DS40153B-page 1

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