HCS300-SN

更新时间： 2024-09-16 23:16:39

品牌	Logo	应用领域
美国微芯 - MICROCHIP		编码器
页数	文件大小	规格书
20页	140K
描述
KEE LOQ Code Hopping Encoder

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中文翻译

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数据手册

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HCS300-SN 数据手册

HCS300

Code Hopping Encoder*

FEATURES

PACKAGE TYPES

PDIP, SOIC

Security

• Programmable 28-bit serial number

• Programmable 64-bit encryption key

• Each transmission is unique

• 66-bit transmission code length

• 32-bit hopping code

• 34-bit ﬁxed code (28-bit serial number,

4-bit button code, 2-bit status)

• Encryption keys are read protected

VDD

LED

PWM

VSS

Operating

HCS300 BLOCK DIAGRAM

• 2.0—6.3V operation

• Four button inputs

- No additional circuitry required

- 15 functions available

Oscillator

Power

latching

and

Controller

Reset circuit

switching

LED

• Selectable baud rate

LED driver

• Automatic code word completion

• Battery low signal transmitted to receiver

• Non-volatile synchronization data

EEPROM

Encoder

Other

• Easy to use programming interface

• On-chip EEPROM

PWM

32-bit shift register

• On-chip oscillator and timing components

• Button inputs have internal pulldown resistors

• Current limiting on LED output

• Minimum component count

VSS

Button input port

VDD

• Synchronous transmission mode

Typical Applications

S₂

S₃

S₁S₀

The HCS300 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

The HCS300 combines

a 32-bit hopping code

generated by a non-linear encryption algorithm, with a

28-bit serial number and six status bits to create a

66-bit transmission stream. The length of the

transmission eliminates the threat of code scanning

and the code hopping mechanism makes each

transmission unique, thus rendering code capture and

resend (code grabbing) schemes useless.

• Automotive RKE systems

• Automotive alarm systems

• Automotive immobilizers

• Gate and garage door openers

• Identity tokens

• Burglar alarm systems

The encryption key, serial number, and conﬁguration

data are stored in EEPROM which is not accessible via

any external connection. This makes the HCS300 a

very secure unit. The HCS300 provides an easy to use

serial interface for programming the necessary security

keys, system parameters, and conﬁguration data.

DESCRIPTION

The HCS300, from Microchip Technology Inc., is a code

hopping encoder designed for secure Remote Keyless

Entry (RKE) systems. The HCS300 utilizes the KEELOQ

code hopping technology, which incorporates high secu-

rity, a small package outline and low cost, to make this

device a perfect solution for unidirectional remote key-

less entry systems and access control systems.

The encyrption keys and code combinations are pro-

grammable but read-protected. The keys can only be

veriﬁed after an automatic erase and programming

operation. This protects against attempts to gain

access to keys and manipulate synchronization values.

KeeLoq is a trademark of Microchip Technology Inc.

*Code hopping encoder patents allowed and pending.

1996 Microchip Technology Inc.

Preliminary

DS21137D-page 1

This document was created with FrameMaker 4 0 4

12 3 4 5 6 7...20

中文翻译

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与HCS300-SN相关器件

型号	品牌	获取价格	描述	数据表
HCS300T-/P	MICROCHIP	获取价格	KEE LOQ Code Hopping Encoder
HCS300T/SN	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS300T-/SN	MICROCHIP	获取价格	KEE LOQ Code Hopping Encoder
HCS300T/SN031	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS300T-I/P	MICROCHIP	获取价格	KEE LOQ Code Hopping Encoder
HCS300T-I/SN	MICROCHIP	获取价格	KEE LOQ Code Hopping Encoder
HCS300T-I/SNVAO	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301	MICROCHIP	获取价格	KEELOQ CODE HOPPING ENCODER
HCS301/P	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDIP8, 0.300 INCH, PLASTIC, DIP-8
HCS301-/P	MICROCHIP	获取价格	KEELOQ CODE HOPPING ENCODER

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