HA16117F Series
Ordering Information
The HA16117F Series includes three ICs with different low threshold levels (VTL).
Type No.
Low Threshold Voltage (VTL)
4.4 V Typ
HA16117FPA/FPAJ
HA16117FPB/FPBJ
HA16117FPC/FPCJ
4.2 V Typ
4.0 V Typ
Pin Arrangement
VCC
P-RUN
CF
1
2
3
4
8
7
6
5
Tadj
ACC
GND
RES
CR
(Top view)
Pin Description
Pin No.
Symbol
VCC
Function
1
2
3
Power supply voltage input
Watchdog timer (WDT) input
P-RUN
CF
Connected capacitor CF determines WDT filter characteristic
(normal frequency range)
4
CR
Connected capacitor CR determines tON for power-on reset and tOFF, tRH,
and tRL for auto-reset
5
6
7
8
RES
GND
ACC
Tadj *
Reset signal output from WDT and voltage supervision circuits
Ground
WDT on/off control input (on when ACC is low)
For adjusting tRH and tOFF (divide VCC to get the adjustment voltage)
Note: The low-voltage threshold cannot be modified by changing the external resistors connected to the
Tadj pin.
2
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