Datasheet

ATmega48A/PA/88A/PA/168A/PA/328/P
 2018 Microchip Technology Inc. Data Sheet Complete DS40002061A-page 653
Problem Fix/ Workaround
None.
40.7.6 Rev A
•
Analog MUX can be turned off when setting ACME bit
• Unstable 32kHz Oscillator
1. Analog MUX can be turned off when setting ACME bit
If the ACME (Analog Comparator Multiplexer Enabled) bit in ADCSRB is set while MUX3 in ADMUX is '1'
(ADMUX[3:0]=1xxx), all MUXes are turned off until the ACME bit is cleared.
Problem Fix/Workaround
Clear the MUX3 bit before setting the ACME bit.
2. Unstable 32kHz Oscillator
The 32kHz oscillator does not work as system clock. The 32kHz oscillator used as asynchronous timer is
inaccurate.
Problem Fix/ Workaround
None.