Datasheet

Select AVCC as ADC voltage reference before entering sleep mode to avoid extra power consumption
during sleep. If no internal or external reference to the ADC is used, an external pull-down resistor should
be added to the AREF pin.
13.1.2 Rev. B
– External capacitor on AREF pin
– Power consumption in power save modes
– Increased power consumption when using voltage reference other than AVCC
1.) External capacitor on AREF pin
If an external capacitor is used on the analog reference pin (AREF), it should be equal to or larger than
100nF. Smaller capacitor value can make the AREF buffer unstable with large ringing which will reduce
the accuracy of the ADC.
Problem Fix/Workaround
None.
2.) Power consumption in power save modes
Power consumption in power save modes will be higher due to improper control of internal power
management.
Problem Fix/Workaround
None.
3. ) Increased power consumption when using voltage reference other than AVCC
Power consumption is higher when using internal or external voltage reference that is not equal to
AVCC.The increased current consumption will be the same for active and all sleep modes, but the largest
impact will be in low power sleep modes.
Problem Fix/Workaround
Select AVCC as ADC voltage reference before entering sleep mode to avoid extra power consumption
during sleep.If no internal or external reference to the ADC is used, an external pull-down resistor should
be added to the AREF pin.
13.1.3 Rev. C
No known errata.
13.1.4 Rev. D to J
Not sampled.
13.1.5 Rev. K
No known errata.
13.2 Errata ATmega88PB
The revision letter in this section refers to the revision of the ATmega88PB device.
13.2.1 Rev. A
– Wrong device ID when using debugWire
– Power consumption in power save modes
ATmega48PB/88PB/168PB
© 2017 Microchip Technology Inc.
Datasheet Summary
DS40001910A-page 23