HA16103FPK datasheet(2/19 Pages) RENESAS

2 / 19 page

HA16103FPJ/FPK

Rev.3.00 Jun 15, 2005 page 2 of 18

Pin Arrangement

P-RUN

GND

(Top view)

VOadj

VOUT

STBY

RES

NMI

STBYadj

VNMIadj

RES

CONT

Pin Functions

No.

Pin Name

Description

NC pin

P-RUN

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 RR. Reset-signal power-on time depends on RR

Connect resistor CR. Reset-signal power-on time depends on CR

GND

Ground

Voadj

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

VOUT

Connect the collector of an external PNP-type transistor. The pin supplies 5-V

regulated voltage for internal circuit

NC pin

VCONT

The external PNP-type transistor’s base control pin

VCC

Supply voltage pin. Operating supply voltage range is 6.0 to 40 V.

CRES

If the voltage of VOUT pin declines to less than Detection voltage(1) (because of an

instant power cut or other cause),

NMI signals are generated.

If tRES ≈ 0.5•Rf•CRES(sec) has passed since then, RES signals are generated.

If the voltage of VOUT pin inclines to more than Detection voltage(1) (in case of re-

start from LVI state),

NMI signals are stop. tr ≈ 0.5•Rf•CRES(sec) has passed since

then,

RES signals are stop. Connect capacitor CRES between this pin and GND to

adjust the

RES signals delay time(tRES, tr). If delay time is unnecessary, make this pin

open (tRES = 2

µs typ. tr = 10 µs typ. at open)

VNMIadj

NMI detection voltage fine-tuning pin. Connect a resistor between this pin and VOUT

pin or GND. The value of output voltage is given by

VNMI = {1 + (R2 // 25.5)/(R3 // 10.6)}

× VNMIadj. Unit for R2, R3: kΩ

NMI

NMI signal output pin. Connect to pin NMI of the microcomputer

RES

RES signal output pin. Connect to pin RES of the microcomputer

VSTBYadj

STBY detection voltage tuning pin. Connect a resistor between this pin and VOUT or

GND. The value of output voltage is given by

VSTBY = 1.89

× {1 + 21/(7.9 + 8.85 // R4)} × VSTBYadj Unit for R4: kΩ

STBY

STBY signal output pin. Connect to pin STBY of the microcomputer

NC pin

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