hcs362 Microchip Technology Inc., hcs362 Datasheet
hcs362
Manufacturer Part Number
hcs362
Description
Keeloq Code Hopping Encoder
Manufacturer
Microchip Technology Inc.
Datasheet
1.HCS362.pdf
(38 pages)
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Part Number:
HCS362
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MICROCHIP/微芯
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Part Number:
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MICROCHIP/微芯
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Part Number:
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MICROCHIP/微芯
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MICROCHIP/微芯
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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,
• 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
• 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 (
• Time bits option
• Queue bits
• TSSOP package
• Programmable Time-out and Guard Time
2002 Microchip Technology Inc.
4/0-bit function code, 1-bit status, 2-bit CRC/time,
2-bit queue)
programmable threshold
ranges
10
K
over specified voltage
EE
L
OQ
®
Code Hopping Encoder
Preliminary
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
PDIP, SOIC
TSSOP
V
V
S3/RFEN
SS
DD
DATA
RFEN
LED
S3/RFEN
S0
S1
S2
DATA
RESET Circuit
V
LED Driver
PLL Driver
S2
Oscillator
SS
EEPROM
1
2
3
4
HCS362
1
2
3
4
SHIFT
32-bit Shift Register
Button Input Port
Controller
S3 S2 S1 S0
8
7
6
5
8
7
6
5
S1
S0
V
LED/SHIFT
Encoder
DS40189D-page 1
DD
V
V
LED/SHIFT
DATA
Switching
Latching
DD
SS
Power
and
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