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HCS320 数据表(PDF) 21 Page - Microchip Technology

部件名 HCS320
功能描述  KEELOQ Code Hopping Encoder
PDF  32 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

HCS320 数据表(HTML) 21 Page - Microchip Technology

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© 2001 Microchip Technology Inc.
DS41097C-page 21
HCS320
FIGURE 8-2:
POWER-UP AND TRANSMIT TIMING
FIGURE 8-3:
POWER-UP AND TRANSMIT TIMING REQUIREMENTS
FIGURE 8-4:
CODE WORD FORMAT
VDD = +3.5 to13.0V
Commercial (C):
Tamb = 0°C to +70°C
Industrial
(I):
Tamb = -40°C to +85°C
Parameter
Symbol
Min
Max
Unit
Remarks
Time to second button press
TBP
10 + Code
Word Time
27 + Code
Word Time
ms
(Note 1)
Transmit delay from button detect
TTD
10
27
ms
Debounce delay
TDB
615
ms
Auto-shutoff time-out period
TTO
22
77
s
(Note 2)
Note 1: TBP is the time in which a second button can be pressed without completion of the first code word and the
intention was to press the combination of buttons.
2: The Auto-shutoff time-out period is not tested.
Button Press
Sn
Detect
TDB
Output
TTD
Multiple Code Word Transmission
TTO
Code
Word
1
Code
Word
2
Code
Word
3
Code
Word
n
TBP
Code
Word
4
PWM
Input
Button
LOGIC ‘0’
LOGIC ‘1’
Bit Period
Preamble
Header
Encrypted Portion
of Transmission
Fixed Portion of
Transmission
Guard
Time
TP
TH
THOP
TFIX
TG
50% Duty Cycle
TBP
TE
TE
TE



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