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CD00161566 Datasheet, PDF (56/105 Pages) STMicroelectronics – nullMedium-density performance line ARM-based 32-bit MCU
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Electrical characteristics
STM32F103x8, STM32F103xB
Low-speed internal (LSI) RC oscillator
Table 25. LSI oscillator characteristics (1)
Symbol
Parameter
Min
Typ
Max Unit
fLSI(2)
tsu(LSI)(3)
IDD(LSI)(3)
Frequency
LSI oscillator startup time
LSI oscillator power consumption
1. VDD = 3 V, TA = –40 to 105 °C unless otherwise specified.
2. Based on characterization, not tested in production.
3. Guaranteed by design, not tested in production.
Wakeup time from low-power mode
30
40
60
kHz
-
-
85
µs
-
0.65
1.2
µA
The wakeup times given in Table 26 is measured on a wakeup phase with a 8-MHz HSI RC
oscillator. The clock source used to wake up the device depends from the current operating
mode:
 Stop or Standby mode: the clock source is the RC oscillator
 Sleep mode: the clock source is the clock that was set before entering Sleep mode.
All timings are derived from tests performed under ambient temperature and VDD supply
voltage conditions summarized in Table 9.
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