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HCS412T Datasheet(PDF) 17 Page - Microchip Technology

No. de pieza HCS412T
Descripción Electrónicos  KEELOQ Code Hopping Encoder and Transponder
PDF  44 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS412T Datasheet(HTML) 17 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
Preliminary
DS41099C-page 17
HCS412
TABLE 3-9:
ENCODER TIMING SPECIFICATIONS
VDD = +2.0 to 6.6V
Commercial (C):TAMB = 0
°C to +70°C
Industrial
(I): TAMB = -40
°C to +85°C
Parameter
Symbol
Min.
Typ.
Max.
Unit
Remarks
Time to second button press
TBP
44 + Code
Word Time
58 + Code
Word Time
63 + Code
Word Time
ms
Note 1
Transmit delay from button detect
TTD
20
30
40
ms
Note 2
Debounce delay on button press
TDBP
14
20
26
ms
Debounce delay on button release
TDBR
20
ms
Auto-shutoff time-out period
TTO
18
20
22
s
Note 3
Long preamble
TLPRE
64
ms
LED on time
TLEDON
32
ms
Note 4
LED off time
TLEDOFF
480
ms
Note 4
LED on time (VDD < VLOW Trip Point)
TLEDL
200
ms
Note 5
Time to delayed SEED
transmission
TDSD
3s
Queue Time
TQUE
30
ms
Note 1: TBP is the time in which a second button can be pressed without completion of the first code word where the
intention was to press the combination of buttons.
2: Transmit delay maximum value, if the previous transmission was successfully transmitted.
3: The auto-shutoff time-out period is not tested.
4: The LED times specified for VDD > VTRIP specified by VLOW in the configuration word.
5: LED on time if VDD < VTRIP specified by VLOW in the configuration word.



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