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HCS500T-I/P bảng dữ liệu(PDF) 4 Page - Microchip Technology

tên linh kiện HCS500T-I/P
Giải thích chi tiết về linh kiện  KEELOQ Code Hopping Decoder
PDF  34 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS500T-I/P bảng dữ liệu(HTML) 4 Page - Microchip Technology

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HCS500
DS40153C-page 4
© 2002 Microchip Technology Inc.
FIGURE 1-3:
BASIC OPERATION OF RECEIVER (DECODER)
Note: Circled numbers indicate the order of execution.
2.0
PIN ASSIGNMENT
Button Press
Information
EEPROM Array
Manufacturer Code
32 Bits of
Encrypted Data
Serial Number
Received Information
Decrypted
Synchronization
Counter
Check for
Match
Sync Counter
Serial Number
KEELOQ
Decryption
Algorithm
1
3
4
Check for
Match
2
Perform Function
Indicated by
button press
5
Crypt Key
PIN
Decoder
Function
I/O(1)
Buffer
Type(1)
Description
1VDD
P
—
Power Connection
2
EE_CLK
OTTL
Clock to I 2C™ EEPROM
3
EE_DAT
I/O
TTL
Data to I2C EEPROM
4MCLR
I
ST
Master clear input
5
S_DAT
I/O
TTL
Synchronous data from controller
6
S_CLK
I
TTL
Synchronous clock from controller
7
RFIN
I
TTL
RF input from receiver
8GND
P
—
Ground connection
Note: P = power, I = in, O = out, and ST = Schmitt Trigger input.



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