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M62050P датащи(PDF) 7 Page - Renesas Technology Corp

номер детали M62050P
подробное описание детали  3 V Supply System Reset with Watchdog Timer
PDF  12 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M62050P датащи(HTML) 7 Page - Renesas Technology Corp

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M62050P/FP
REJ03D0786-0200 Rev.2.00 Jun 15, 2007
Page 7 of 11
• Pin (1) (WD pin) input requirements
(1) Input cycle: tWD or less (discharge should start before voltage at WD pin reaches 2.4 V.)
1
1.1
⋅ C ⋅ R1
< f
(2) Input pulse width tWDIN: t2 or less
1.2
1.7
2.4
t2
t
t1
0.5
ms
C = 104
1ms
50
µs
C = 103
100
µs
VCC = 3V
R1 = 10kΩ
Discharge Voltage x(V)
Figure 5
3. VCC detection voltage adjustment
The detection voltage 2 (VTH2) can be set as shown in Table 1 by connecting ADJ pin with opening or VCC.
Table 1
Detection Voltage 2 (ADJ pin)
Detection Voltage 2
at Opening (V)
at VCC (V)
VTH2(H)
2.55
2.35
VTH2(L)
2.50
2.30
8
7
6
40k
Ω
+
–
35.2k
Ω
6.5k
Ω
RL
1.25V
4
Figure 6



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