Datasheet

Electrical characteristics STM32F410x8/B
78/142 DocID028094 Rev 5
6.3.8 External clock source characteristics
High-speed external user clock generated from an external source
In bypass mode the HSE oscillator is switched off and the input pin is a standard I/O. The
external clock signal has to respect the Table 55. However, the recommended clock input
waveform is shown in Figure 19.
The characteristics given in Table 38 result from tests performed using an high-speed
external clock source, and under ambient temperature and supply voltage conditions
summarized in Table 15.
Table 37. Low-power mode wakeup timings
(1)
Symbol Parameter Conditions Min Typ Max Unit
t
WUSLEEP
(2)
Wakeup from Sleep mode
--46
CPU
clock
cycles
t
WUSLEEPFDSM
(2)
Flash memory in Deep power
down mode
- - 40,0
µs
t
WUSTOP
(2)
Wakeup from Stop mode,
code execution from Flash
memory
Main regulator - 12.9 15.0
Main regulator, Flash memory
in Deep power down mode
- 104.9 115.0
Regulator in low-power mode
(3)
- 20.8 25.0
Regulator in low-power mode,
Flash memory in Deep power
down mode
- 112.9 120.0
Wakeup from Stop mode,
code execution from RAM
Main regulator, Flash memory
in Stop or Deep power down
mode
-4.97.0
Regulator in low-power mode,
Flash memory in Stop or Deep
power down mode
(3)
- 12.8 20.0
t
WUSTDBY
(2)(4)
Wakeup from Standby
mode
- - 316.8 350.0
t
WUFLASH
Wakeup of Flash memory From Flash_Stop mode - - 10.0
Wakeup of Flash memory
From Flash Deep power down
mode
- - 40.0
1. Guaranteed by characterization.
2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first instruction.
3. The specification is valid for wakeup from regulator in low power mode or in low power low voltage mode, since the timing
difference is negligible.
4. t
WUSTDBY
maximum value is given at - 40 °C.
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