Datasheet

DocID027107 Rev 6 109/202
STM32F446xC/E Electrical characteristics
175
t
LOCK
PLL lock time
VCO freq = 100 MHz 75 - 200
µs
VCO freq = 432 MHz 100 - 300
Jitter
(3)
Cycle-to-cycle jitter
System clock
120 MHz
RMS - 25 -
ps
peak
to
peak
- ±150 -
Period Jitter
RMS - 15 -
peak
to
peak
- ±200 -
Bit Time CAN jitter
Cycle to cycle at 1 MHz
on 1000 samples
-330 -
I
DD(PLL)
(4)
PLL power consumption on VDD
VCO freq = 100 MHz
VCO freq = 432 MHz
0.15
0.45
-
0.40
0.75
mA
I
DDA(PLL)
(4)
PLL power consumption on
VDDA
VCO freq = 100 MHz
VCO freq = 432 MHz
0.30
0.55
-
0.40
0.85
mA
1. Take care of using the appropriate division factor M to obtain the specified PLL input clock values. The M factor is shared
between PLL and PLLI2S.
2. Guaranteed by design.
3. The use of 2 PLLs in parallel could degraded the Jitter up to +30%.
4. Guaranteed based on test during characterization.
Table 43. Main PLL characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit
Table 44. PLLI2S (audio PLL) characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
PLLI2S_IN
PLLI2S input clock
(1)
-0.95
(2)
12.10MHz
f
PLLI2S_OUT
PLLI2S multiplier output clock - - - 216 MHz
f
VCO_OUT
PLLI2S VCO output - 100 - 432 MHz
t
LOCK
PLLI2S lock time
VCO freq = 100 MHz 75 - 200
µs
VCO freq = 432 MHz 100 - 300
Jitter
(3)
Master I2S clock jitter
Cycle to cycle at
12.288 MHz on
48KHz period,
N=432, R=5
RMS - 90 - -
peak
to
peak
- ±280 - ps
Average frequency of
12.288 MHz
N = 432, R = 5
on 1000 samples
-90 -ps
WS I2S clock jitter
Cycle to cycle at 48 KHz
on 1000 samples
-400 - ps
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