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HCS300-I/SN Datasheet

  • HCS300-I/SN

  • REMOTE-CONTROL TRANSMITTER/ENCODER|CMOS|SOP|8PIN

  • 28頁(yè)

  • ETC

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HCS300
K
EE
L
OQ廬
Code Hopping Encoder
FEATURES
Security
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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
DESCRIPTION
The HCS300 from Microchip Technology Inc. is a code
hopping encoder designed for secure Remote Keyless
Entry (RKE) systems. The HCS300 utilizes the K
EE
L
OQ
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
PDIP, SOIC
S0
S1
S2
S3
1
HCS300
2
3
4
8
7
6
5
V
DD
Operating
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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
LED
PWM
V
SS
HCS300 BLOCK DIAGRAM
Oscillator
RESET circuit
Controller
Power
latching
and
switching
Other
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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
LED
LED driver
EEPROM
Encoder
PWM
32-bit shift register
Typical Applications
The HCS300 is ideal for Remote Keyless Entry (RKE)
applications. These applications include:
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Automotive RKE systems
Automotive alarm systems
Automotive immobilizers
Gate and garage door openers
Identity tokens
Burglar alarm systems
V
SS
V
DD
Button input port
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.
漏
2001 Microchip Technology Inc.
DS21137F-page 1

HCS300-I/SN 產(chǎn)品屬性

  • Microchip

  • 編碼器、解碼器、復(fù)用器和解復(fù)用器

  • 6.6 V

  • - 0.3 V

  • + 85 C

  • SMD/SMT

  • SOIC-8

  • Tube

  • - 40 C

  • 100

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