FAQ Frequently Asked Questions

What should I do if I can't fulfill the power on conditions described in the datasheet?

The interface of this IC is reset normally and the master device can make normal communication if ph...

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Are there any points to note when raising the power supply voltage?

ABLIC's RTCs initializes at the same time when the power supply voltage is raised. If the rise time...

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How to calculate monthly rate for frequency?

If the error range is ±10 ppm, it can be calculated below. ±10x10-6x60secx60minx24hourx30day = ±25.9...

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Since the device code is the same as other devices used, it cannot be operated on the same bus line. Is there any products with different device codes?

Yes. There is a product called S-35391 with a different device code from S-35390, so please consider...

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Is it possible to connect an oscillator instead of a quartz crystal to XIN/XOUT?

Since we do not assume the use of connecting an oscillator to XIN/XOUT, please do not use it in such...

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Are there any points to note about power dissipation and thermal resistance?

Since self-heating is extremely low, there are no problems with power dissipation and thermal resist...

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What is the recommended CL value for quartz crystal?

When using the quartz crystal with a CL exceeding the rated value (7 pF) (e.g: CL = 12.5 pF), oscill...

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