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HA16129FPJ 데이터시트(PDF) 9 Page - Renesas Technology Corp

부품명 HA16129FPJ
상세설명  Single Watchdog Timer
PDF  23 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HA16129FPJ 데이터시트(HTML) 9 Page - Renesas Technology Corp

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HA16129FPJ
Rev.3.00 Jun 15, 2005 page 9 of 22
Calculation Formulas (cont.)
Item
Formula
Notes
WDT.
fLine1 =
fLine2 = 24% (fixed)
fLine3 =
fLine4 = 99%
The relationship between
fLine1 and fLine3
fLine1 = fLine3 × 12.9 (Du − 24)
0.31
× (Du − 24)
Cf
⋅ Rf
0.024
Cf
⋅ Rf
tL
tH
Du: The P-RUN signal duty cycle
Du =
× 100
tH
tH + tL
The WDT function judges whether the P-RUN pulse signal is
normal or not. If the WDT function judges the P-RUN pulse
signal to be abnormal, it outputs a reset signal. The normal
range is the area enclosed by fLine1 to fLine4 in the figure.
fLine1
Duty
Normal
operation
area
fLine2
fLine3
fLine4



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