306
8023F–AVR–07/09
ATmega325P/3250P
26.3 Speed Grades
Figure 26-1. Maximum Frequency vs. V
CC
(4 - 10 MHz).
Figure 26-2. Maximum Frequency vs. V
CC
(10 -20 MHz).
10 MHz
4 MHz
1.8V 2.7V 5.5V
Safe Operating Area
20 MHz
10 MHz
2.7V 4.5V 5.5V
Safe Operating Area
