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HCS410-ST Datasheet(PDF) 1 Page - Microchip Technology

Part # HCS410-ST
Description  KEELOQ CODE HOPPING ENCODER AND TRANSPONDER
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS410-ST Datasheet(HTML) 1 Page - Microchip Technology

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© 1997 Microchip Technology Inc.
Preliminary
DS40158C-page 1
M
HCS410
FEATURES
Security
• Two programmable 64-bit encoder keys
• 16/32-bit bi-directional challenge and response
using one of two keys
• 69-bit transmission length
• 32-bit unidirectional code hopping, 37-bit
nonencrypted portion
• Encoder keys are read protected
• Programmable 28/32-bit serial number
• 60/64-bit, read-protected seed for secure learning
• Three IFF encryption algorithms
• Delayed increment mechanism
• Asynchronous transponder communication
• Queuing information transmitted
Operating
• 2.0V to 6.6V operation, 13V encoder only
operation
• Three switch inputs [S2, S1, S0]—seven functions
• Batteryless bi-directional transponder
• Selectable baud rate and code word blanking
• Automatic code word completion
• Battery low signal transmitted
• Nonvolatile synchronization
• PWM or Manchester RF encoding
• Combined transmitter, transponder operation
• Anti-collision of multiple transponders
• Passive proximity activation
• Device protected against reverse battery
• Intelligent damping for high Q LC-circuits
Other
• 37-bit nonencrypted part contains 28/32-bit serial
number, 4/0-bit function code, 1-bit battery low,
2-bit CRC, 2-bit queue
• Simple programming interface
• On-chip tunable RC oscillator (
±10%)
• On-chip EEPROM
• 64-bit user EEPROM in transponder mode
• Battery-low LED indication
• SQTP serialization quick-time programming
• 8-pin PDIP/SOIC/TSSOP and die
Typical Applications
• Automotive remote entry systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage openers
• Electronic door locks (Home/Office/Hotel)
• Burglar alarm systems
• Proximity access control
PACKAGE TYPES
BLOCK DIAGRAM
S0
S1
S2/LED
LC1
VDD
LC0
PWM
GND
18
2
3
4
7
6
5
PDIP, SOIC
S2/LED
LC1
GND
PWM
1
2
3
4
8
7
6
5
S1
S0
VDD
LC0
TSSOP
Oscillator
Configuration Register
Power
Control
Wakeup
Logic
Address
DecodingEEPROM
Debounce
Control
and
Queuer
LED
Control
PWM
Driver
PPM
Detector
PWM
PPM
Manch.
Encoder
VDD
S0
S1
S2
LCI0
LCI1
PWM
Code Hopping Encoder and Transponder*
KEELOQ is a registered trademark of Microchip Technology Inc.
*Code hopping encoder patents issued in Europe, U.S.A., R.S.A.—U.S.A.: 5,517,187; Europe: 0459781


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