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CF5741

Analog Clock CMOS IC

Nippon Precision Circuits  

CF5741 series

Test Function

Fundamental frequency alarm output function

AI goes to 1/2VDD when AO1 and AO2 output alarm fundamental frequency. This frequency can used to

adjust frequency.

AI

(Active Low)

fCY (Hz)

1/2VDD

fPW(Hz)

AO1

(Active High)

*1

AO2/F

(Active High)

AO2/F*2

(Active Low)

*1 : AO2 / F is the reverse phase of AO1, when output is active.

*2 : AO2 / F is complete reverse phase of AO1.

fPW : Alarm fundamental frequency

fCY : Alarm modulation frequency

Gain fast function

RST/TC is active level more than 125 msec. And RST/TC input outside clock when motor output gain fast.

tCPW is more less than 0.9765625 msec.

tRES

tCPW

RST/TC

(Active Low)

tRES ≥ 125msec

tCPW ≤ 0.9765625msec

NIPPON PRECISION CIRCUITS—6

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