參數(shù)資料
型號(hào)： HA16117FB
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)： 4/31頁(yè)
文件大?。?/td> 249K
代理商： HA16117FB
HA16117F Series
4
Watchdog Timer
Reshapes the P-RUN signal (programming-running pulse) from the MPU to obtain a 50% duty cycle, then
converts frequency to duty cycle in the watchdog filter (WD filter).
The watchdog filter is a bandpass filter. The duty cycle of the filter output is highest in the normal
frequency range of P-RUN.
The watchdog filter output controls I
2
in the multivibrator, the higher the duty cycle of the watchdog filter
output, the shorter the time during which I
2
discharges C
R
. If the duty cycle is high enough then C
R
is held
at a high potential, preventing the multivibrator from firing, and the
RES
output remains high.
Absolute Maximum Ratings
(Ta = 25
°
C)
Ratings
Item
Symbol
HA16117FPA/FPB/FPC
HA16117FPAJ/FPBJ/FPCJ
Unit
Power supply voltage
V
CC
V
P
V
ACC
I
RES
P
T
Topr
–0.3 to +14
–0.3 to +14
V
P-RUN input voltage
V
CC
14
V
CC
14
V
ACC input voltage
V
RES output current
10
10
mA
Permissible dissipation *
1
300
300
mW
Operating temperature range
–30 to +85
–40 to +85
°
C
°
C
Storage temperature
Note:
1. This is the value when mounted on a glass epoxy substrate with 30% wiring density, up to an
ambient temperature of 83
°
C. Above that temperature, derate by 7.14 mW/
°
C.
Tstg
–55 to +125
–55 to +125
40mm
Substrate
0.8 mm ceramic or
1.5 mm epoxy
400
300
200
100
0
30
20 0
Ambient operating temperature range Ta (
°
C
)
20 40
60 80
85
°
C
7.14 mW/
°
C
(30% wiring density)
83
°
C
100
P
T
相關(guān)PDF資料
PDF描述
HA16117FC CMOS Watchdog Timer
HA16117FPA CMOS Watchdog Timer
HA16117FPAJ CMOS Watchdog Timer
HA16117 CMOS Watchdog Timer
HA16117F CMOS Watchdog Timer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA16117FC 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS Watchdog Timer
HA16117FPA 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CMOS Watchdog Timer
HA16117FPAJ 制造商:Renesas Electronics Corporation 功能描述:Processor Supervisor 4.4V 600uA 8-Pin SOP
HA16117FPB 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS Watchdog Timer
HA16117FPBJ 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS Watchdog Timer
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