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Programmable 28/32-bit serial number

Programmable 64-bit encryption key

Each transmission is unique

67-bit transmission code length

32-bit hopping code

35-bit fixed code (28/32-bit serial number,

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

鈥?Encryption keys are read protected

DESCRIPTION

The HCS361 is a code hopping encoder designed for

secure Remote Keyless Entry (RKE) systems. The

HCS361 utilizes the K

EE

L

OQ

code hopping technology,

which incorporates high security, a small package

outline and low cost, to make this device a perfect

solution for unidirectional remote keyless entry sys-

tems and access control systems.

PACKAGE TYPES

PDIP, SOIC

S0

S1

S2

S3

1

HCS361

2

3

4

8

7

6

5

V

DD

LED

DATA

V

SS

Operating

鈥?2.0-6.6V operation

鈥?Four button inputs

- 15 functions available

鈥?Selectable baud rate

鈥?Automatic code word completion

鈥?Battery low signal transmitted to receiver

鈥?Nonvolatile synchronization data

鈥?PWM and VPWM modulation

Other

鈥?/div>

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

Minimum component count

HCS361 BLOCK DIAGRAM

Oscillator

RESET circuit

LED

LED driver

Controller

Power

latching

and

switching

Enhanced Features Over HCS300

鈥?/div>

48-bit seed vs. 32-bit seed

2-bit CRC for error detection

28/32-bit serial number select

Two seed transmission methods

PWM and VPWM modulation

Wake-up signal in VPWM mode

IR Modulation mode

DATA

EEPROM

Encoder

32-bit shift register

V

SS

V

DD

Button input port

Typical Applications

The HCS361 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

鈥?/div>

Automotive RKE systems

Automotive alarm systems

Automotive immobilizers

Gate and garage door openers

Identity tokens

Burglar alarm systems

S

3

S

2

S

1

S

0

DESCRIPTION

The HCS361 combines a 32-bit hopping code

generated by a nonlinear encryption algorithm, with a

28/32-bit serial number and 7/3 status bits to create a

67-bit transmission stream.

漏

2002 Microchip Technology Inc.

DS40146E-page 1

制造商
Microchip
產(chǎn)品種類
編碼器、解碼器、復(fù)用器和解復(fù)用器
Supply Voltage - Max
6.9 V
Supply Voltage - Min
3 V
最大工作溫度
+ 85 C
安裝風(fēng)格
SMD/SMT
封裝 / 箱體
SOIC-8
封裝
Tube
最小工作溫度
- 40 C
工廠包裝數(shù)量
100

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