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HCS410-ST PDF даташит

Спецификация HCS410-ST изготовлена ​​​​«Microchip Technology» и имеет функцию, называемую «KEELOQ CODE HOPPING ENCODER AND TRANSPONDER».

Детали детали

Номер произв HCS410-ST
Описание KEELOQ CODE HOPPING ENCODER AND TRANSPONDER
Производители Microchip Technology
логотип Microchip Technology логотип 

36 Pages
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HCS410-ST Даташит, Описание, Даташиты
M
HCS410
Code Hopping Encoder and Transponder*
FEATURES
PACKAGE TYPES
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
PDIP, SOIC
S0 1
S1 2
S2/LED 3
LC1 4
8 VDD
7 LC0
6 PWM
5 GND
TSSOP
S2/LED
LC1
GND
PWM
1
2
3
4
8 S1
7 S0
6 VDD
5 LC0
BLOCK DIAGRAM
VDD Power
Control
Oscillator
Configuration Register
S0
Debounce
Address
Decoding
EEPROM
S1 Wakeup Control
Logic
and
Queuer
S2 LED
Control
LCI0
LCI1
PWM
PWM
Driver
PPM
Detector
PWM
PPM
Manch.
Encoder
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
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
© 1997 Microchip Technology Inc.
Preliminary
DS40158C-page 1









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HCS410-ST Даташит, Описание, Даташиты
HCS410
Table of Contents
1.0 System Overview ....................................................................................................................................................3
1.1 Key Terms ........................................................................................................................................................3
1.2 KEELOQ Code Hopping Encoders .....................................................................................................................4
1.3 KEELOQ IFF ......................................................................................................................................................5
2.0 Device Operation ....................................................................................................................................................6
2.1 Pinout Description ............................................................................................................................................7
2.2 Code Hopping Mode (CH Mode) .....................................................................................................................8
2.3 Code Hopping Mode Special Features ..........................................................................................................11
2.4 IFF Mode ........................................................................................................................................................14
2.5 IFF Opcodes ..................................................................................................................................................17
2.6 IFF Special Features ......................................................................................................................................18
2.7 LED Indicator .................................................................................................................................................18
3.0 EEPROM Organization and Configuration ............................................................................................................19
3.1 Encoder Key 1 and 2 .....................................................................................................................................19
3.2 Discrimination Value and Overflow ................................................................................................................19
3.3 16-bit Synchronization Counter ......................................................................................................................19
3.4 60/64-bit Seed Word/Transport Code ............................................................................................................20
3.5 Encoder Serial Number ..................................................................................................................................20
3.6 User Data .......................................................................................................................................................20
3.7 Configuration Data .........................................................................................................................................21
4.0 Integrating the HCS410 into a System ..................................................................................................................23
4.1 Key Generation ..............................................................................................................................................23
4.2 Learning an HCS410 to a Receiver ...............................................................................................................24
4.3 CH Mode Decoder Operation ........................................................................................................................25
4.4 IFF Decoder Operation ..................................................................................................................................27
5.0 Electrical Characteristics .......................................................................................................................................28
HCS410 Product Identification System ........................................................................................................................35
DS40158C-page 2
Preliminary
© 1997 Microchip Technology Inc.









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HCS410-ST Даташит, Описание, Даташиты
HCS410
DESCRIPTION
The HCS410 is a code hopping transponder device
designed for secure entry systems. The HCS410 uti-
lizes the patented KEELOQ code hopping system and
bi-directional challenge-and-response for logical and
physical access control. High security learning mecha-
nisms make this a turnkey solution when used with the
KEELOQ decoders. The encoder keys and synchroniza-
tion information are stored in protected on-chip
EEPROM.
A low cost batteryless transponder can be imple-
mented with the addition of an inductor and two capac-
itors. A packaged module including the inductor and
capacitor will also be offered.
A single HCS410 can be used as an encoder for
Remote Keyless Entry (RKE) and a transponder for
immobilization in the same circuit and thereby dramat-
ically reducing the cost of hybrid transmitter/transpon-
der circuits.
1.0 SYSTEM OVERVIEW
1.1 Key Terms
• Anticollision – Allows two transponders to be in
the files simultaneously and be verified individu-
ally.
• CH Mode – Code Hopping Mode. The HCS410
transmits a 69-bit transmission each time it is acti-
vated, with at least 32-bits changing each time the
encoder is activated.
• Encoder Key – A unique 64-bit key generated and
programmed into the encoder during the manu-
facturing process. The encoder key controls the
encryption algorithm and is stored in EEPROM on
the encoder device.
• IFF – Identify friend or foe is a means of validating
a token. A decoder sends a random challenge to
the token and checks that the response of the
token is a valid response.
• KEELOQ Encryption Algorithm – The high security
level of the HCS410 is based on the patented
KEELOQ technology. A block cipher encryption
algorithm based on a block length of 32 bits and a
key length of 64 bits is used. The algorithm
obscures the information in such a way that even
if the unencrypted/challenge information differs by
only one bit from the information in the previous
transmission/challenge, the next coded transmis-
sion/response will be totally different. Statistically,
if only one bit in the 32-bit string of information
changes, approximately 50 percent of the coded
transmission will change.
• Learn – The HCS product family facilitates several
learning strategies to be implemented on the
decoder. The following are examples of what can
be done.
Normal Learn –The receiver uses the same infor-
mation that is transmitted during normal operation to
derive the transmitter’s encoder key, decrypt the dis-
crimination value and the synchronization counter.
Secure Learn* – The transmitter is activated through
a special button combination to transmit a stored
60-bit value (random seed) that can be used for key
generation or be part of the key. Transmission of the
random seed can be disabled after learning is com-
pleted.
• Manufacturer’s Code – A 64-bit word, unique to
each manufacturer, used to produce a unique
encoder key in each transmitter (encoder).
• Passive Proximity Activation – When the HCS410
is brought into in a magnetic field without a
command given by the base station, the HCS410
can be programmed to give an RF transmission.
• Transport Code – A 32-bit transport code needs
to be given before the HCS410 can be inductively
programmed. This prevents accidental
programming of the HCS410.
*Secure Learn patent pending.
© 1997 Microchip Technology Inc.
Preliminary
DS40158C-page 3










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Номер в каталогеОписаниеПроизводители
HCS410-SNKEELOQ CODE HOPPING ENCODER AND TRANSPONDERMicrochip Technology
Microchip Technology
HCS410-STKEELOQ CODE HOPPING ENCODER AND TRANSPONDERMicrochip Technology
Microchip Technology

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