Adverting event, current is big

[zcmm]

  Dear all  
          I use QFAB QFN48 schematic with internal LDO setup,but my board have not 32.768KHZ.

the Pre_processing current is big when in adverting .Why?

[Kenneth]

I expect this to be a short current spike of few us when internal regulators and internal circuitry power ON. This should easily be handled by adding 1uF to 4.7uF decoupling capacitor on VDD, the current may be high, but the time is very short. For instance the 47nF capacitor on DEC2 needs to be charged when powering ON, so you need some decoupling on VDD to handle this. If that doesn't work, please share the schematic so we can take a closer look.

[zcmm]

1uf--4.7uf is same as before.it is ok when the capacitor >10uf.Can i use 47uf,have influence?for exmaple battery Use capacity/battery use time and so on