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HCS512_11 PDF预览

HCS512_11

更新时间: 2024-02-17 02:11:31
品牌 Logo 应用领域
美国微芯 - MICROCHIP 解码器
页数 文件大小 规格书
34页 715K
描述
KEELOQ® Code Hopping Decoder system and high security

HCS512_11 数据手册

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HCS512  
®
KEELOQ Code Hopping Decoder  
FEATURES  
Security  
DESCRIPTION  
The Microchip Technology Inc. HCS512 is a code hop-  
ping decoder designed for secure Remote Keyless  
Entry (RKE) systems. The HCS512 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 keyless entry system.  
• Secure storage of Manufacturer’s Code  
• Secure storage of transmitter’s keys  
• Up to four transmitters can be learned  
• KEELOQ® code hopping technology  
• Normal and secure learning mechanisms  
PACKAGE TYPE  
Operating  
PDIP, SOIC  
• 4.0V – 6.0V operation  
• 4 MHz external RC oscillator  
• Learning indication on LRNOUT  
• Auto baud rate detection  
• Power saving SLEEP mode  
LRNIN  
LRNOUT  
NC  
1
2
3
4
5
6
7
8
9
18  
17  
16  
15  
14  
13  
12  
11  
10  
RFIN  
NC  
OSCIN  
OSCOUT  
VDD  
MCLR  
GND  
S0  
Other  
• Stand-alone decoder  
DATA  
CLK  
• On-chip EEPROM for transmitter storage  
• Four binary function outputs–15 functions  
• 18-pin DIP/SOIC package  
S1  
S2  
SLEEP  
VLOW  
Typical Applications  
S3  
• Automotive remote entry systems  
• Automotive alarm systems  
• Automotive immobilizers  
• Gate and garage openers  
• Electronic door locks  
BLOCK DIAGRAM  
RFIN  
Reception Register  
DECRYPTOR  
• Identity tokens  
• Burglar alarm systems  
DATA  
CLK  
EEPROM  
CONTROL  
Compatible Encoders  
LRNIN  
All KEELOQ encoders and transponders configured for  
the following setting:  
MCLR  
SLEEP  
OSCIN  
OSCILLATOR  
• PWM modulation format (1/3-2/3)  
TE in the range from 100 μs to 400 μs  
• 10 x TE Header  
OUTPUT  
CONTROL  
S3 VLOW LRNOUT  
S2  
S0 S1  
• 28-bit Serial Number  
The Manufacturer’s Code, transmitter keys, and syn-  
chronization information are stored in protected on-  
chip EEPROM. The HCS512 uses the DATA and CLK  
inputs to load the Manufacturer’s Code which cannot  
be read out of the device.  
• 16-bit Synchronization counter  
• Discrimination bits equal to Serial Number 8 LSbs  
• 66- to 69-bit length code word.  
© 2011 Microchip Technology Inc.  
DS40151E-page 1  

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