Datasheet

Electrical characteristics STM32F21xxx
96/175 DocID17050 Rev 9
Figure 34 and Figure 35 show the main PLL output clock waveforms in center spread and
down spread modes, where:
F0 is f
PLL_OUT
nominal.
T
mode
is the modulation period.
md is the modulation depth.
Figure 34. PLL output clock waveforms in center spread mode
Figure 35. PLL output clock waveforms in down spread mode
6.3.12 Memory characteristics
Flash memory
The characteristics are given at T
A
= –40 to 105 °C unless otherwise specified.
Frequency (PLL_OUT)
Time
F0
tmode 2xtmode
md
ai17291
md
Frequency (PLL_OUT)
Time
F0
tmode 2xtmode
2xmd
ai17292