V3020SO8B datasheet(6/17 Pages) EMMICRO

Part #	V3020SO8B

Description	Ultra Low Power 1-Bit 32 kHz RTC

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Manufacturer	EMMICRO [EM Microelectronic - MARIN SA]

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V3020

6

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Typical Frequency on I/O Pin

Typical drift for ideal 32'768 Hz quartz

Note

: The trimming capacitor value must not exceed

15 pF. Greater values may disturb the oscillator

function

Fig. 5

Quartz Characteristics

O

F

∆

= -0.038

2

C

ppm

°

(T – TO)

2 ± 10%

∆F/FO

=

the ratio of the change in frequency to the

nominal value expressed in ppm (it can be

thought of as the frequency deviation at any

temperature)

T

=

the temperature of interest in °C

TO

=

the turnover temperature (25 ± 5°C)

To determine the clock error (accuracy) at a given

temperature, add the frequency tolerance at 25°C to the

value obtained from the formula above.

Fig. 6

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V3020SO8B Datasheet(PDF) 6 Page - EM Microelectronic - MARIN SA

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