I am looking at two different members of the K22_120 family, MK22FN512VDC12 and MK22FN1M0VMC12. As far as I can tell from the datasheets these parts are pretty much identical, except that the latter has 1M of FLASH rather than 512k. Yet if I look at the VLPS power consumption for the two parts, the first has a typical figure of 8.7uA, but the second has a typical figure of 78uA, almost 10x greater. I would expect the 1M part to have a slightly higher consumption because of the extra FLASH, but not that much higher.
Can anyone explain the reason for the large difference between the two VLPS currents?