參數(shù)資料
型號: HA16117F
廠商: Hitachi,Ltd.
英文描述: CMOS Watchdog Timer
中文描述: 看門狗定時器的CMOS
文件頁數(shù): 28/31頁
文件大?。?/td> 249K
代理商: HA16117F
HA16117F Series
28
500 p
1
1000 p
0.01
μ
0.03
μ
10
100
1 k
Ta = 25
°
C
P
L
External Capacitance C
F
(F)
C
R
= 0.01
μ
F
C
R
= 0.1
μ
F
C
R
= 1.0
μ
F
1 M
0
Ambient temperature Ta (
°
C)
100 k
10 k
1 k
100
10
1
30
50
85
f
H
f
L
P-RUN Low Threshold Frequency vs. C
F
Capacitance
P-RUN Input Frequency vs. Ambient Temperature
Pulse
generator
Test circuit
Oscilloscope
Pulse
generator
Test circuit
Oscilloscope
Abnormal
Normal
P
P
P-RUN abnormal
P-RUN abnormal
P-RUN normal
C
F
C
R
75 k
51 k
V
CC
Tadj
P-RUN ACC
C
F
5 V
GND
C
R
0.01
μ
duty 50%
0.1
μ
750 k
510 k
V
CC
Tadj
P-RUN ACC
C
F
5 V
GND
C
R
RES
RES
Notes: 1.
2.
Normal detection is assumed when RES is not output.
The figure at left is for a constant P-RUN frequency.
Notes: 1.
2.
Normal detection is assumed when RES is not output.
The figure at left is for a constant P-RUN frequency.
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