Datasheet

Electrical characteristics STM32F745xx STM32F746xx
128/227 DocID027590 Rev 4
Low-speed internal (LSI) RC oscillator
Figure 35. LSI deviation versus temperature
5.3.11 PLL characteristics
The parameters given in Table 43 and Table 44 are derived from tests performed under
temperature and V
DD
supply voltage conditions summarized in Table 17.
Table 42. LSI oscillator characteristics
(1)
1. V
DD
= 3 V, T
A
= –40 to 105 °C unless otherwise specified.
Symbol Parameter Min Typ Max Unit
f
LSI
(2)
2. Guaranteed by characterization results.
Frequency 17 32 47 kHz
t
su(LSI)
(3)
3. Guaranteed by design.
LSI oscillator startup time - 15 40 µs
I
DD(LSI)
(3)
LSI oscillator power consumption - 0.4 0.6 µA
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Table 43. Main PLL characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
PLL_IN
PLL input clock
(1)
-0.95
(2)
12.10
MHz
f
PLL_OUT
PLL multiplier output clock - 24 - 216
f
PLL48_OUT
48 MHz PLL multiplier output
clock
- - 48 75
f
VCO_OUT
PLL VCO output - 100 - 432
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