Datasheet

Electrical characteristics STM32H743xI
124/231 DS12110 Rev 5
Low-speed internal (LSI) RC oscillator
6.3.10 PLL characteristics
The parameters given in Table 49 are derived from tests performed under temperature and
V
DD
supply voltage conditions summarized in Table 23: General operating conditions.
t
stab(CSI)
CSI oscillator stabilization time
(to reach ±
3% of f
CSI
)
- - - 4 cycle
I
DD(CSI)
CSI oscillator power consumption - - 23 30 µA
1. Guaranteed by design.
2. Guaranteed by test in production.
3. Guaranteed by characterization.
Table 47. CSI oscillator characteristics
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
Table 48. LSI oscillator characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
LSI
(1)
1. Guaranteed by characterization results.
LSI frequency
V
DD
= 3.3 V, 
T
J
= 25 °C (after
calibration)
31.4 32 32.6
kHz
T
J
= –40 to 105 °C,
V
DD
= 1.62 to 3.6 V
29.76 - 33.60
t
su(LSI)
(2)
2. Guaranteed by design.
LSI oscillator startup time - - 80 130
µs
t
stab(LSI)
(2)
LSI oscillator stabilization
time (5% of final value)
- - 120 170
I
DD(LSI)
(2)
LSI oscillator power
consumption
- - 130 280 nA
Table 49. PLL characteristics (wide VCO frequency range)
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
PLL_IN
PLL input clock - 2 - 16 MHz
PLL input clock duty cycle - 10 - 90 %
f
PLL_P_OUT
PLL multiplier output clock P
Voltage scaling range 1 1.5 - 400
(2)
MHz
Voltage scaling range 2 1.5 - 300
Voltage scaling range 3 1.5 - 200
f
PLL_Q_OUT
PLL multiplier output clock Q/R
Voltage scaling range 1 1.5 - 400
(2)
Voltage scaling range 2 1.5 - 300
Voltage scaling range 3 1.5 - 200
f
VCO_OUT
PLL VCO output - 192 - 836