Sleep Mode | Start-Up Time |
---|---|
Idle | Six clock cycles |
Standby | Six clock cycles + one (OSC start-up + Regulator start-up) |
Power-Down | Six clock cycles + one (OSC start-up + Regulator start-up) |
The start-up time for the different clock sources is described in the CLKCTRL - Clock Controller section.
In addition to the normal wake-up time, it is possible to make the device wait until
the BOD is ready before executing the code. This is done by writing 0x3
to the BOD operation mode in the Active and Idle (ACTIVE) bit field in the BOD
Configuration (FUSE.BODCFG) fuse. If the BOD is ready before the normal wake-up time,
the total wake-up time will be the same. If the BOD takes longer than the normal wake-up
time, the wake-up time will be extended until the BOD is ready. This ensures correct
supply voltage whenever code is executed.