HA16117FPA RENESAS [Renesas Technology Corp], HA16117FPA Datasheet - Page 28

• Manufacturer Part Number: HA16117FPA
• Description: CMOS Watchdog Timer
• Manufacturer: RENESAS [Renesas Technology Corp]

HA16117F Series
Rev.3.00 Jun 15, 2005 page 28 of 30
P-RUN Low Threshold Frequency vs. C
P-RUN Input Frequency vs. Ambient Temperature
100
1 k
10
500 p
1
100 k
10 k
1 M
100
Ta = 25 C
1 k
10
1
1000 p
External Capacitance C
30
Ambient temperature Ta ( C)
Abnormal
P-RUN abnormal
P-RUN abnormal
0
P-RUN normal
f
H
f
L
Normal
C
R
C
50
0.01
C
R
= 0.01 F
R
= 1.0 F
= 0.1 F
F
(F)
F
0.03
Capacitance
85
Notes: 1.
Notes: 1.
duty 50%
5 V
5 V
2.
2.
generator
generator
Pulse
Pulse
Normal detection is assumed when RES is not output.
The figure at left is for a constant P-RUN frequency.
Normal detection is assumed when RES is not output.
The figure at left is for a constant P-RUN frequency.
0.01
C
F
C
0.1
R
V
P-RUN ACC
C
C
V
P-RUN ACC
C
C
CC
CC
F
R
F
R
Test circuit
Test circuit
GND
GND
RES
RES
Tadj
Tadj
Oscilloscope
Oscilloscope
51 k
510 k
750 k
75 k