We are building an embedded system with sleep capabilities and a battery to preserve datetime. But the battery current usage is too high. We use an i.MX 6ULL V1.1A, the battery is connect to pin 40 and to test we cut all other connections to SNVS (Secure Non-Volatile Storage) pins. Still the current is 21 mili ampères instead of ~35 micro ampères.
During our tests without cutting the circuit connections some times the current consumption was right, some times it was wrong. Is there a way to turn off the operating system in a way to always use only battery to supply RTC circuit?
Did we miss something?