鈥?/div>
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 HCS360 is a code hopping encoder designed for
secure Remote Keyless Entry (RKE) systems. The
HCS360 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
HCS360
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 Manchester modulation
BLOCK DIAGRAM
Oscillator
RESET circuit
LED
LED driver
Controller
Power
latching
and
switching
Other
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鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
EEPROM
Encoder
Enhanced Features Over HCS300
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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 Manchester modulation
IR Modulation mode
DATA
32-bit shift register
V
SS
V
DD
Button input port
Typical Applications
The HCS360 is ideal for Remote Keyless Entry (RKE)
applications. These applications include:
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
The HCS360 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.
DS40152E-page 1
next
HCS360/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
2 V
+ 70 C
SMD/SMT
SOIC-8
Tube
0 C
100
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