We use i.MX6 with MMPF0100 for our product.
When an external power supply is not connected, it is described in the datasheet that SRTC-block current consumption is 41uA.
For example, when we refer to SDP and use the Li-Cell battery(Panasonic : ML621 - 5mA/h) for RTC, it can keep up RTC only for 122 hours.
* 5mA / 41uA ≒ 121.9hour (≒5.08days)
If this is true, we need to change into the battery of larger capacity.
Is there any way of reducing "41uA" keeping up RTC?