Rainbow Electronics ATmega64C1 - Manual (Page 313)

313
7647A–AVR–02/08
ATmega32/64/M1/C1
Figure 25-2. Maximum Frequency vs. V
CC
, ATmega32/64/M1/C1
25.6 PLL Characteristics
.
Note: While connected to external clock or external oscillator, PLL Input Frequency must be selected to
provide outputs with frequency in accordance with driven parts of the circuit (CPU core, PSC...)
Safe Operating Area
16Mhz
8Mhz
2.7V 5.5V 4.5V
Table 3. PLL Characteristics - V
CC
= 2.7V to 5.5V (unless otherwise noted)
Symbol Parameter Min. Typ. Max. Units
PLL
IF
Input Frequency 0.5 1 2 MHz
PLL
F
PLL Factor 64
PLL
LT
Lock-in Time 64 µS