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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
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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
Minimum component count
HCS361 BLOCK DIAGRAM
Oscillator
RESET circuit
LED
LED driver
Controller
Power
latching
and
switching
Enhanced Features Over HCS300
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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>
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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
next
HCS361-I/SN 產(chǎn)品屬性
Microchip
編碼器、解碼器、復(fù)用器和解復(fù)用器
6.9 V
3 V
+ 85 C
SMD/SMT
SOIC-8
Tube
- 40 C
100
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