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Inquiry MMPF3000 Coin Cell charger control

Question asked by Andy Chien on May 4, 2017
Latest reply on May 5, 2017 by Andy Chien

Dear Sir,

 

Our customer used i.MX6UL+ PF3000 and add coin cell to design product.

We knew if system off (PMIC Vin off), coin cell provide power to VSNVS of i.MX6UL then work RTC function only.

If PMIC Vin provide power and system work, we will setting COINCTL register (COINCHEN bit) to enable charger coin cell.

We are not sure how to control disable or know coin cell is full to stop charger.

Could you help provide control method, software or circuit to reference?

Thanks a lot, 

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