ha16117fpc Renesas Electronics Corporation., ha16117fpc Datasheet - Page 4

• Manufacturer Part Number: ha16117fpc
• Description: Cmos Watchdog Timer
• Manufacturer: Renesas Electronics Corporation.

HA16117F Series
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
output, the shorter the time during which I
at a high potential, preventing the multivibrator from firing, and the RES output remains high.
Absolute Maximum Ratings (Ta = 25 C)
Item
Power supply voltage
P-RUN input voltage
ACC input voltage
RES output current
Permissible dissipation *
Operating temperature range
Storage temperature
Note:
4
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.
Ambient operating temperature range Ta ( C)
400
300
200
100
1
0
30 20 0
Symbol
V
V
V
I
P
Topr
Tstg
RES
CC
P
ACC
T
2
20 40
40mm
in the multivibrator, the higher the duty cycle of the watchdog filter
2
Ratings
HA16117FPA/FPB/FPC
–0.3 to +14
V
14
10
300
–30 to +85
–55 to +125
discharges C
CC
60 80
83
85
100
C
C
R
. If the duty cycle is high enough then C
(30% wiring density)
7.14 mW/
C
0.8 mm ceramic or
1.5 mm epoxy
HA16117FPAJ/FPBJ/FPCJ
–0.3 to +14
V
14
10
300
–40 to +85
–55 to +125
Substrate
CC
R
is held
Unit
V
V
V
mA
mW
C
C