DataSheet.jp

HCS360-IP の電気的特性と機能

HCS360-IPのメーカーはMicrochip Technologyです、この部品の機能は「KEELOQ CODE HOPPING ENCODER」です。


製品の詳細 ( Datasheet PDF )

部品番号 HCS360-IP
部品説明 KEELOQ CODE HOPPING ENCODER
メーカ Microchip Technology
ロゴ Microchip Technology ロゴ 




このページの下部にプレビューとHCS360-IPダウンロード(pdfファイル)リンクがあります。

Total 24 pages

No Preview Available !

HCS360-IP Datasheet, HCS360-IP PDF,ピン配置, 機能
M
HCS360
Code Hopping Encoder
FEATURES
Security
• 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)
• Encryption keys are read protected
Operating
• 2.0-6.6V operation
• Four button inputs
- 15 functions available
• Selectable baud rate
• Automatic code word completion
• Battery low signal transmitted to receiver
• Nonvolatile synchronization data
• PWM and Manchester modulation
Other
• 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
Enhanced Features Over HCS300
• 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
Typical Applications
The HCS360 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
PACKAGE TYPES
PDIP, SOIC
S0
1
S1 2
S2 3
S3 4
8 VDD
7 LED
6 PWM
5 VSS
HCS360 BLOCK DIAGRAM
Oscillator
LED
Reset circuit
LED driver
Controller
Power
latching
and
switching
PWM
EEPROM
Encoder
32-bit shift register
VSS
VDD
Button input port
S3 S2 S1 S0
DESCRIPTION
The HCS360 is a code hopping encoder designed for
secure Remote Keyless Entry (RKE) systems. The
HCS360 utilizes the KEELOQ 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 systems
and access control systems.
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. The length of the
transmission eliminates the threat of code scanning
and the code hopping mechanism makes each
transmission unique, thus rendering code capture and
resend (code grabbing) schemes useless.
KEELOQ is a registered trademark of Microchip Technology Inc.
*Code hopping encoder patents issued in Europe, U. S. A., R. S. A. — US: 5,517,187; Europe: 0459781
© 1996 Microchip Technology Inc.
Preliminary
DS40152C-page 1

1 Page





HCS360-IP pdf, ピン配列
HCS360
Any type of controller may be used as a receiver, but it
is typically a microcontroller with compatible firmware
that allows the receiver to operate in conjunction with a
transmitter, based on the HCS360. Section 7.0
provides more detail on integrating the HCS360 into a
total system.
Before a transmitter can be used with a particular
receiver, the transmitter must be ‘learned’ by the
receiver. Upon learning a transmitter, information is
stored by the receiver so that it may track the
transmitter, including the serial number of the
transmitter, the current synchronization value for that
transmitter and the same encryption key that is used on
the transmitter. If a receiver receives a message of valid
format, the serial number is checked and, if it is from a
learned transmitter, the message is decrypted and the
decrypted synchronization counter is checked against
what is stored. If the synchronization value is verified,
then the button status is checked to see what operation
is needed. Figure 1-3 shows the relationship between
some of the values stored by the receiver and the val-
ues received from the transmitter.
FIGURE 1-1: CREATION AND STORAGE OF ENCRYPTION KEY DURING PRODUCTION
Transmitter
Serial Number or
Seed
Manufacturer’s
Code
Key
Generation
Algorithm
Encryption
Key
HCS360 EEPROM Array
Serial Number
Encryption Key
Sync Counter
.
.
.
FIGURE 1-2: BASIC OPERATION OF TRANSMITTER (ENCODER)
Transmitted Information
EEPROM Array
Decryption Key
Sync Counter
Serial Number
KEELOQ
Encryption
Algorithm
32 Bits of
Encrypted Data
Serial Number
Button Press
Information
FIGURE 1-3: BASIC OPERATION OF RECEIVER (DECODER)
EEPROM Array
Decryption Key
Sync Counter
Serial Number
Manufacturer Code
Check for
Match
KEELOQ
Decryption
Algorithm
Check for
Match
Decrypted
Synchronization
Counter
Button Press
Information
Serial Number
32 Bits of
Encrypted Data
Received Information
© 1996 Microchip Technology Inc.
Preliminary
DS40152C-page 3


3Pages


HCS360-IP 電子部品, 半導体
HCS360
3.2 SYNC_A, SYNC_B
(Synchronization Counter)
This is the 16-bit synchronization value that is used to
create the hopping code for transmission. This value
will be changed after every transmission. A second syn-
chronization value can be used to stay synchronized
with a second receiver.
3.3 SEED_0, SEED_1, and SEED_2
(Seed Word)
This is the three word (48 bits) seed code that will be
transmitted when seed transmission is selected. This
allows the system designer to implement the secure learn
feature or use this fixed code word as part of a different
key generation/tracking process or purely as a fixed code
transmission.
3.4 SER_0, SER_1
(Encoder Serial Number)
SER_0 and SER_1 are the lower and upper words of
the device serial number, respectively. There are 32 bits
allocated for the serial number and a selectable config-
uration bit determines whether 32 or 28 bits will be
transmitted. The serial number is meant to be unique
for every transmitter.
3.5 CONFIG
(Configuration Word)
The configuration word is a 16-bit word stored in
EEPROM array that is used by the device to store
information used during the encryption process, as well
as the status of option configurations. Further
explanations of each of the bits are described in the
following sections.
TABLE 3-2 CONFIGURATION WORD
Bit Number Symbol
Bit Description
0 LNGRD Long Guard Time
1 FAST 0 Baud Rate Selection
2 FAST 1 Baud Rate Selection
3 NU Not Used
4 SEED Seed Transmission enable
5 DELM Delay mode enable
6 TIMO Time out enable
7 IND Independent mode enable
8 USRA0 User bit
9 USRA1 User bit
10 USRB0 User bit
11 USRB1 User bit
12 XSER Extended serial number
enable
13 TMPSD Temporary seed transmis-
sion enable
14 MANCH Manchester/PWM modula-
tion selection
15 OVR Overflow bit
3.5.1 LNGRD: LONG GUARD TIME
LNGRD = 1 selects the encoder to extend the guard
time between code words. This can be used to reduce
the average power transmitted over a 100ms window
and thereby transmit a higher peak power.
3.5.2 FAST 1, FAST 0 BAUD RATE SELECTION
FAST 1 and FAST 0 selects the baud rate according to
Table 3-3.
TABLE 3-3 BAUD RATE SELECTION
TE
FAST 1
FAST 0
400 0
200 0
0
1
200 1
100 1
0
1
DS40152C-page 6
Preliminary
© 1996 Microchip Technology Inc.

6 Page



ページ 合計 : 24 ページ
 
PDF
ダウンロード
[ HCS360-IP データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
HCS360-IP

KEELOQ CODE HOPPING ENCODER

Microchip Technology
Microchip Technology
HCS360-ISN

KEELOQ CODE HOPPING ENCODER

Microchip Technology
Microchip Technology


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap