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HA16103FPK

Hitachi Semiconductor
Part Number HA16103FPK
Manufacturer Hitachi Semiconductor
Description Watchdog Timer
Published Mar 22, 2005
Detailed Description HA16103 FPJ/FPK Watchdog Timer Description The HA16103FPJ/FPK monolithic voltage control is designed for microcomputer ...
Datasheet PDF File HA16103FPK PDF File

HA16103FPK
HA16103FPK

Overview
HA16103 FPJ/FPK Watchdog Timer Description The HA16103FPJ/FPK monolithic voltage control is designed for microcomputer systems.
In addition to voltage regulator, it includes watch dog timer function, power on reset function, and output voltage monitor function.
It is suitable for battery use microcomputer systems.
Functions • • • • 5 V regulated power supply Power on reset pulse generator Watch dog timer Low voltage inhibit protection Features • Wide operational supply voltage range (VCC = 6 to 40 V) • Various control signals are generated when microcomputer system runaway occurs.
(NMI signal and STBY signal are generated by detecting voltage level, and RES signal is generated by monitoring the time after NMI signal is detected) • Regulated voltage, NMI detecting voltage, STBY detecting voltage are adjustable.
• At low voltage and re-start, the delay time of RES signal is adjustable • Watchdog timer filtering uses the minimum clock input pulse width and maximum cycle detection method Ordering Information Type No.
HA16103FPJ HA16103FPK Package FP-20DA FP-20DA HA16103 FPJ/FPK Pin Arrangement NC P-RUN Rf Cf RR CR GND VOadj VOUT NC 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC STBY VSTBYadj RES NMI VNMIadj CRES V CC VCONT NC (Top view) 2 HA16103 FPJ/FPK Pin Functions No.
1 2 3 4 5 6 7 8 Pin Name NC P-RUN Rf Cf RR CR GND Voadj Description NC pin P-RUN signal input pin for watchdog timer Connect resistor Rf.
Frequency bandwidth of the filter circuit depends on Rf Connect resistor Cf.
Frequency bandwidth of the filter circuit depends on Cf Connect resistor R R .
Reset-signal power-on time depends on RR Connect resistor C R .
Reset-signal power-on time depends on CR Ground 5-V reference voltage fine-tuning pin.
Connect a resistor between this pin and GND.
The value of output voltage is given by VOUT = {1 + 5.
34/(R1 // 2.
0)} × Voadj Unit for R1: kΩ Connect the collector of an external PNP-type transistor.
The pin supplies 5-V regulated voltage for interna...


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