參數(shù)資料
型號(hào): HA16117F
廠商: Hitachi,Ltd.
英文描述: CMOS Watchdog Timer
中文描述: 看門狗定時(shí)器的CMOS
文件頁(yè)數(shù): 9/31頁(yè)
文件大?。?/td> 249K
代理商: HA16117F
HA16117F Series
9
2. With a low-frequency P-RUN signal ( 13 Hz to 26 Hz)
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
0 V
1.6 V
3.2 V
5 V
0 V
0.9 V
3.6 V
5 V
P-RUN
40 ms (25 Hz)
2T
t
1
5
μ
s
t
33 ms
Q
A
C
F
WD
C
R
B
C
When f
is 13 Hz to 26 Hz, the WD duty (D = 100
×
t
/2T) is 25% to 50%. When the WD
duty is 25% or above, multivibrator (power-on and auto-reset circuit) oscillation stops. As a
result, the RES signal is fixed high.
60 ms
20 ms
RES
Q
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