參數(shù)資料
型號(hào)： HA16103
廠商： Hitachi,Ltd.
英文描述： Watchdog Timer
中文描述： 看門(mén)狗定時(shí)器
文件頁(yè)數(shù)： 3/21頁(yè)
文件大?。?/td> 106K
代理商： HA16103
HA16103 FPJ/FPK
3
Pin Functions
No.
Pin Name
Description
1
NC
NC pin
2
P-RUN
P-RUN signal input pin for watchdog timer
3
Rf
Connect resistor Rf. Frequency bandwidth of the filter circuit depends on Rf
4
Cf
Connect resistor Cf. Frequency bandwidth of the filter circuit depends on Cf
5
R
R
C
R
GND
Connect resistor R
R
. Reset-signal power-on time depends on R
R
Connect resistor C
R
. Reset-signal power-on time depends on C
R
Ground
6
7
8
Voadj
5-V reference voltage fine-tuning pin. Connect a resistor between this pin and
GND. The value of output voltage is given by
V
OUT
= {1 + 5.34/(R1 // 2.0)}
×
Voadj Unit for R1: k
Connect the collector of an external PNP-type transistor. The pin supplies 5-V
regulated voltage for internal circuit
9
V
OUT
10
NC
NC pin
11
NC
NC pin
12
V
CONT
V
CC
C
RES
The external PNP-type transistor’s base control pin
13
Supply voltage pin. Operating supply voltage range is 6.0 to 40 V.
14
If the voltage of V
pin declines to less than Detection voltage(1) (because of
an instant power cut or other cause),
NMI
signals are generated.
If t
≈
0.5RfC
RES
(sec) has passed since then,
RES
signals are generated.
If the voltage of V
pin inclines to more than Detection voltage(1) (in case of
re-start from LVI state),
NMI
signals are stop. t
≈
0.5RfC
(sec) has passed
since then,
RES
signals are stop. Connect capacitor C
between this pin and
GND to adjust the
RES
signals delay time(t
, t
). If delay time is unnecessary,
make this pin open (t
RES
= 2
μ
s typ. t
r
= 10
μ
s typ. at open)
NMI
detection voltage fine-tuning pin. Connect a resistor between this pin and
V
OUT
pin or GND. The value of output voltage is given by
V
NMI
= {1 + (R2 // 25.5)/(R3 // 10.6)}
×
V
NMIadj
. Unit for R2, R3: k
NMI
signal output pin. Connect to pin
NMI
of the microcomputer
RES
signal output pin. Connect to pin
RES
of the microcomputer
STBY
detection voltage tuning pin. Connect a resistor between this pin and
V
OUT
or GND. The value of output voltage is given by
V
STBY
= 1.89
×
{1 + 21/(7.9 + 8.85 // R4)}
×
V
STBYadj
Unit for R4: k
STBY
signal output pin. Connect to pin
STBY
of the microcomputer
15
V
NMIadj
16
NMI
RES
17
18
V
STBYadj
19
STBY
20
NC
NC pin
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參數(shù)描述
HA16103FPJ 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Watchdog Timer
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