Datasheet > HCS300-I-SN

HCS300-I-SN

更新时间： 2024-11-10 01:19:31

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
28页	275K
描述
KEELOQ Code Hopping Encoder

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中文翻译

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数据手册

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HCS300-I-SN 数据手册

HCS300

KEELOQ Code Hopping Encoder

FEATURES

Security

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, incorporating high security, a

small package outline and low cost. The HCS300 is a

perfect solution for unidirectional remote keyless entry

systems and access control systems.

• Programmable 28-bit serial number

• Programmable 64-bit encryption key

• Each transmission is unique

• 66-bit transmission code length

• 32-bit hopping code

• 28-bit serial number, 4-bit button code, 2-bit status

• Crypt keys are read protected

PACKAGE TYPES

PDIP, SOIC

Operating

VDD

• 2.0V - 6.3V operation

LED

PWM

VSS

• Four button inputs

• No additional circuitry required

• 15 functions available

• Selectable baud rate

• Automatic code word completion

• Low battery signal transmitted to receiver

• Non-volatile synchronization data

HCS300 BLOCK DIAGRAM

Oscillator

Power

latching

and

Other

Controller

RESET circuit

switching

• Easy-to-use programming interface

• On-chip EEPROM

LED

LED driver

• On-chip oscillator and timing components

• Button inputs have internal pull-down resistors

• Current limiting on LED output

• Low external component cost

EEPROM

Encoder

PWM

32-bit shift register

Button input port

Typical Applications

The HCS300 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

VSS

VDD

• Automotive RKE systems

• Automotive alarm systems

• Automotive immobilizers

• Gate and garage door openers

• Identity tokens

S3 S2 S1 S0

The HCS300 combines a 32-bit hopping code,

generated by a nonlinear encryption algorithm, with a

28-bit serial number and 6 information bits to create a

66-bit code word. The code word length eliminates the

threat of code scanning and the code hopping mecha-

nism makes each transmission unique, thus rendering

code capture and resend schemes useless.

• Burglar alarm systems

2001 Microchip Technology Inc.

DS21137F-page 1

12 3 4 5 6 7...28

中文翻译

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