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NE56605-42 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
NE56605-42
System reset with built-in watchdog timer
Philips Electronics
NE56605-42 Datasheet PDF : 16 Pages
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Philips Semiconductors
System reset with built-in watchdog timer
Product data
NE56605-42
R
100 pF
2.2 k
Ω
V
CC
S
1
8
7
6
5
CRT
RESET V
S
R
CT
V
CC
CRT
1
AC
B
CRT
CRT
4
0.1
µ
F
C
T
RESET CLK GND
1
2
3
4
CRT
CRT
2
20pF
R
10 k
Ω
CRT
S
2
AC
B
V
CLK
CRT
3
V
CCA
V
CLKA
SL01285
Figure 24. Test Circuit 2 (AC parameters).
Table 2. Switch and power supply settings, AC parameters
Parameter
V
CC
pulse width for
detection (Note 1)
Symbol S
1
t
P1
C
S
2
V
CCA
C
5.0 V
t
1
4.0 V
V
CC
–
1.4 V
0V
V
CLKA
t
2
t
3
Clock input pulse width
t
CLKW
A
C
(Note 2)
Clock input cycle
(Note 3)
t
CLK
A
C
–
5.0 V
1.4 V
t
2
0V
t
2
–
5.0 V
1.4 V
t
2
0V
t
3
Watchdog monitoring
t
WDM
A
A
–
5.0 V
–
time
Watchdog reset time
t
WDR
A
A
–
5.0 V
–
Power-on reset delay
t
PR
B to A A
–
5.0 V
–
time
RESET, RESET
t
PD1
C
B
5.0 V
–
–
propagation delay time
4.0 V
t
PD2
C
B
5.0 V
–
–
4.0 V
RESET, RESET rise time
t
R1
A
A
–
5.0 V
–
t
R2
A
A
–
5.0 V
–
RESET, RESET fall time
t
F1
A
A
–
5.0 V
–
t
F2
A
A
–
5.0 V
–
NOTES:
1. t
1
= 8.0
µ
s.
2. t
2
= 3.0
µ
s.
3. t
3
= 20
µ
s.
V
CLK
–
CRT
1, 2, 3
–
1, 2, 3
–
1, 2, 3
5.0 V 1, 2, 3
5.0 V
5.0 V
1, 2, 3
1, 2, 3
0V
1, 2
0V
2, 3
5.0 V
1
5.0 V
3
5.0 V
1
5.0 V
3
2001 Aug 22
13
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