HCS362 datasheet(1/46 Pages) MICROCHIP

Part #	HCS362

Description	KEELOQ짰 Code Hopping Encoder Non-volatile synchronization data

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Manufacturer	MICROCHIP [Microchip Technology]

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DS40189E-page 1

HCS362

FEATURES

Security

• Programmable 28/32-bit serial number

• Two programmable 64-bit encryption keys

• Programmable 60-bit seed

• Each transmission is unique

• 69-bit transmission code length

• 32-bit hopping code

• 37-bit fixed code (28/32-bit serial number,

4/0-bit function code, 1-bit status, 2-bit CRC/time,

2-bit queue)

• Encryption keys are read protected

Operation

• 2.0V – 6.3V operation

• Four button inputs

• 15 functions available

• Selectable baud rates and code word blanking

• Programmable minimum code word completion

• Battery low signal transmitted to receiver with

programmable threshold

• Non-volatile synchronization data

• PWM and Manchester modulation

Other

• RF Enable output – PLL interface

• Easy to use programming interface

• On-chip EEPROM

• On-chip tunable oscillator and timing components

• Button inputs have internal pull-down resistors

• Current limiting on LED output

• Minimum component count

Enhanced Features Over HCS300

• 60-bit seed vs. 32-bit seed

• 2-bit CRC for error detection

• 28/32-bit serial number select

• Tunable oscillator (

+/−10% over specified voltage

ranges

)

• Time bits option

• Queue bits

• TSSOP package

• Programmable Time-out and Guard Time

PACKAGE TYPES

HCS362 BLOCK DIAGRAM

Typical Applications

The HCS362 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

1

2

3

4

8

7

6

5

S0

S1

S2

S3/RFEN

VDD

LED/SHIFT

DATA

VSS

PDIP, SOIC

S2

S3/RFEN

VSS

DATA

1

2

3

4

8

7

6

5

S1

S0

VDD

LED/SHIFT

TSSOP

VSS

VDD

Oscillator

RESET Circuit

LED Driver

Controller

Power

Latching

and

Switching

Button Input Port

32-bit Shift Register

Encoder

EEPROM

DATA

LED

S3 S2 S1 S0

SHIFT

PLL Driver

RFEN

KEELOQ® Code Hopping Encoder

Similar Part No. - HCS362

Manufacturer	Part #	Datasheet	Description
Microchip Technology	HCS362	395Kb / 28P	Memory Programming Specification 2004
	HCS362-I	489Kb / 38P	KEELOQ Code Hopping Encoder 01/18/02
	HCS362-I/P	489Kb / 38P	KEELOQ Code Hopping Encoder 01/18/02
	HCS362-I/SN	489Kb / 38P	KEELOQ Code Hopping Encoder 01/18/02
	HCS362-I/ST	489Kb / 38P	KEELOQ Code Hopping Encoder 01/18/02

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