參數(shù)資料
型號: HC512T-SO
英文描述: Consumer IC
中文描述: 消費性IC
文件頁數(shù): 1/26頁
文件大?。?/td> 329K
代理商: HC512T-SO
2002 Microchip Technology Inc.
DS40151D-page 1
HCS512
FEATURES
Security
Secure storage of Manufacturer’s Code
Secure storage of transmitter’s keys
Up to four transmitters can be learned
K
EE
L
OQ
code hopping technology
Normal and secure learning mechanisms
Operating
4.0V – 6.0V operation
4 MHz external RC oscillator
Learning indication on LRNOUT
Auto baud rate detection
Power saving SLEEP mode
Other
Stand-alone decoder
On-chip EEPROM for transmitter storage
Four binary function outputs–15 functions
18-pin DIP/SOIC package
Typical Applications
Automotive remote entry systems
Automotive alarm systems
Automotive immobilizers
Gate and garage openers
Electronic door locks
Identity tokens
Burglar alarm systems
Compatible Encoders
All K
EE
L
OQ
encoders and transponders configured for
the following setting:
PWM modulation format (1/3-2/3)
T
E
in the range from 100
μ
s to 400
μ
s
10 x T
E
Header
28-bit Serial Number
16-bit Synchronization counter
Discrimination bits equal to Serial Number 8 LSbs
66- to 69-bit length code word.
DESCRIPTION
The Microchip Technology Inc. HCS512 is a code hop-
ping decoder designed for secure Remote Keyless
Entry (RKE) systems. The HCS512 utilizes the pat-
ented K
EE
L
OQ
code hopping system and high security
learning mechanisms to make this a canned solution
when used with the HCS encoders to implement a uni-
directional remote keyless entry system.
PACKAGE TYPE
BLOCK DIAGRAM
The Manufacturer’s Code, transmitter keys, and syn-
chronization information are stored in protected on-
chip EEPROM. The HCS512 uses the DATA and CLK
inputs to load the Manufacturer’s Code which cannot
be read out of the device.
H
PDIP, SOIC
1
2
3
4
5
6
7
8
9
LRNIN
LRNOUT
NC
MCLR
GND
S0
S1
S2
S3
18
17
16
15
14
13
12
11
10
RFIN
NC
OSCIN
OSC
OUT
V
DD
DATA
CLK
SLEEP
V
LOW
S0
S1
S3
S2
V
LOW
Reception Register
EEPROM
CONTROL
DECRYPTOR
OUTPUT
RFIN
OSCILLATOR
OSCIN
CONTROL
LRNOUT
DATA
CLK
LRNIN
MCLR
SLEEP
K
EE
L
OQ
Code Hopping Decoder
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