HCS301

更新时间： 2024-11-08 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	170K
描述
KEELOQ CODE HOPPING ENCODER

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中文翻译

获取价格

数据手册

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HCS301 数据手册

HCS301

KEELOQ Code Hopping Encoder*

FEATURES

PACKAGE TYPES

Security

PDIP, SOIC

VDD

LED

PWM

VSS

• 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

Operating

HCS301 BLOCK DIAGRAM

• 3.5V - 13.0V operation

• Four button inputs

- 15 functions available

Oscillator

Power

latching

and

Controller

Reset circuit

switching

• Selectable baud rate

LED

LED driver

• Automatic code word completion

• Battery low signal transmitted to receiver

• Battery low indication on LED

• Non-volatile synchronization data

EEPROM

Encoder

Other

PWM

• Functionally identical to HCS300

• Easy to use programming interface

• On-chip EEPROM

• On-chip oscillator and timing components

• Button inputs have internal pulldown resistors

• Current limiting on LED output

• Low external component cost

32-bit shift register

VSS

Button input port

VDD

S₂

S₃

S₁S₀

Typical Applications

The HCS301 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

The HCS301 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 HCS301 a

very secure unit. The HCS301 provides an easy to use

serial interface for programming the necessary security

keys, system parameters, and conﬁguration data.

DESCRIPTION

The HCS301, from Microchip Technology Inc., is a code

hopping encoder designed for secure Remote Keyless

Entry (RKE) systems. The HCS301 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 encryption 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 registered trademark of Microchip Technology Inc.

*Code hopping encoder patents issued for Europe, U. S. A., and R. S. A.

1996 Microchip Technology Inc.

Preliminary

DS21143A-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HCS301相关器件

型号	品牌	获取价格	描述	数据表
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
HCS301/SN	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301-/SN	MICROCHIP	获取价格	KEELOQ CODE HOPPING ENCODER
HCS301/SN012	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301/SN020	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301/SN022	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301/SNC01	MICROCHIP	获取价格	TELECOM, DATA ENCRYPTION CIRCUIT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
HCS301_01	MICROCHIP	获取价格	KEELOQ CODE HOPPING ENCODER
HCS301_11	MICROCHIP	获取价格	Microchip Technology Inc. is a code hopping encoder designed for secure

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