HCS300 datasheet(1/28 Pages) MICROCHIP

Part #	HCS300

Description	KEELOQ Code Hopping Encoder

PDF	28 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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DS21137F-page 1

HCS300

FEATURES

Security

• 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

Operating

• 2.0V - 6.3V operation

• 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

Other

• Easy-to-use programming interface

• On-chip EEPROM

• On-chip oscillator and timing components

• Button inputs have internal pull-down resistors

• Current limiting on LED output

• Low external component cost

Typical Applications

The HCS300 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

• Automotive RKE systems

• Automotive alarm systems

• Automotive immobilizers

• Gate and garage door openers

• Identity tokens

• Burglar alarm systems

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.

PACKAGE TYPES

HCS300 BLOCK DIAGRAM

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.

1

2

3

4

8

7

6

5

S0

S1

S2

S3

VDD

LED

PWM

VSS

PDIP, SOIC

VSS

VDD

Oscillator

RESET circuit

LED driver

Controller

Power

latching

and

switching

Button input port

32-bit shift register

Encoder

EEPROM

PWM

LED

S3 S2 S1 S0

KEELOQ® Code Hopping Encoder

Similar Part No. - HCS300

Manufacturer	Part #	Datasheet	Description
Microchip Technology	HCS300	138Kb / 20P	KEE LOQ Code Hopping Encoder 2001
	HCS300	395Kb / 28P	Memory Programming Specification 2004
	HCS300	158Kb / 17P	USING KEELOQ짰 TO GENERATE HOPPING PASSWORDS 1997 - 2002
	HCS300	714Kb / 36P	Microchip Technology Inc. is a code hopping encoder designed 2011
	HCS300-/P	381Kb / 28P	KEE LOQ Code Hopping Encoder 2001

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Similar Description - HCS300

Manufacturer	Part #	Datasheet	Description
Microchip Technology	HCS200	150Kb / 16P	KEELOQ CODE HOPPING ENCODER 1996
	HCS301	168Kb / 20P	KEELOQ CODE HOPPING ENCODER 1996
	HCS360	211Kb / 24P	KEELOQ CODE HOPPING ENCODER 1996-1997
	HCS361	343Kb / 24P	KEELOQ CODE HOPPING ENCODER 1996 - 1997
	HCS500	356Kb / 24P	KEELOQ CODE HOPPING ENCODER 1997
	HCS201	383Kb / 28P	KEELOQ Code Hopping Encoder 2001
	HCS320	435Kb / 32P	KEELOQ Code Hopping Encoder 2001
	HCS370	518Kb / 36P	KEELOQ Code Hopping Encoder 2002
	HCS365	463Kb / 34P	KEELOQ Code Hopping Encoder 2002
	HCS362-I	489Kb / 38P	KEELOQ Code Hopping Encoder 01/18/02

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HCS300 Datasheet(PDF) 1 Page - Microchip Technology

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