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參數(shù)資料
| 型號： | HCS370TST |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | KEELOQ Code Hopping Encoder |
| 中文描述： | 而Keeloq跳碼編碼器 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大小： | 518K |
| 代理商： | HCS370TST |
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2002 Microchip Technology Inc.
Preliminary
DS41111D-page 1
K
EE
L
OQ
Code Hopping Encoder
FEATURES
Security
Two programmable 32-bit serial numbers
Two programmable 64-bit encoder keys
Two programmable 60-bit seed values
Each transmission is unique
67/69-bit transmission code length
32-bit hopping code
Crypt keys are read protected
Operating
2.05-5.5V operation
Six button inputs
15 functions available
Four selectable baud rates
Selectable minimum code word completion
Battery low signal transmitted to receiver
Nonvolatile synchronization data
PWM, VPWM, PPM, and Manchester modulation
Button queue information transmitted
Dual Encoder functionality
Other
On-chip EEPROM
On-chip tuned oscillator (±10% over voltage and
temperature)
Button inputs have internal pull-down resistors
LED output
PLL control for ASK and FSK
Low external component count
Step-up voltage regulator
Typical Applications
The HCS370 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
HCS370 BLOCK DIAGRAM
GENERAL DESCRIPTION
The HCS370 is a code hopping encoder designed for
secure Remote Keyless Entry (RKE) and secure
remote control systems. The HCS370 utilizes the
K
EE
L
OQ
code hopping technology, which incorpo-
rates high security, a small package outline, and low
cost to make this device a perfect solution for unidirec-
tional authentication systems and access control sys-
tems.
The HCS370 combines a hopping code generated by a
nonlinear encryption algorithm, a serial number, and
status bits to create a secure transmission code. The
length of the transmission eliminates the threat of code
scanning and code grabbing access techniques.
8
14
1
2
3
4
13
12
11
S0
S1
S2
S3
V
DD
LED
DATA
Vss
PDIP, SOIC,
TSSOP
H
S4
SLEEP/S5
SHIFT
RFEN
STEP
V
IN
5
6
7
10
9
V
SS
V
DD
Oscillator
RESET circuit
LED driver
RF Enable
Controller
Power
latching
and
switching
Button input port
32-bit SHIFT register
Encoder
EEPROM
DATA
LED
RFEN
S3
S2
S
1
S
0
S4
S5
SHIFT
Step-up
regulator
STEP
V
IN
SLEEP
HCS370
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