Wakeup Time From Low-Power Mode - ST STM32L15 QC Series Datasheet

Electrical characteristics
1. Data based on differential I
enabled, in the following conditions: f
(range 3), f
each peripheral. The CPU is in Sleep mode in both cases. No I/O pins toggling.
2. HSI oscillator is OFF for this measure.
3. In Low-power sleep and run mode, the Flash memory must always be in power-down mode.
4. Data based on a differential I
conversion (HSI consumption not included).
5. Data based on a differential I
conversion of V
6. Including supply current of internal reference voltage.
6.3.5

Wakeup time from low-power mode

The wakeup times given in the following table are measured with the MSI RC oscillator. The
clock source used to wake up the device depends on the current operating mode:
•
Sleep mode: the clock source is the clock that was set before entering Sleep mode
•
Stop mode: the clock source is the MSI oscillator in the range configured before
entering Stop mode
•
Standby mode: the clock source is the MSI oscillator running at 2.1 MHz
All timings are derived from tests performed under the conditions summarized in
74/134
measurement between all peripherals OFF an one peripheral with clock
DD
HCLK
= 64kHz (Low-power run/sleep), f
HCLK
measurement between ADC in reset configuration and continuous ADC
DD
measurement between DAC in reset configuration and continuous DAC
DD
/2. DAC is in buffered mode, output is left floating.
DD
DS10262 Rev 8
STM32L151xC/C-A STM32L152xC/C-A
= 32 MHz (range 1), f
HCLK
= f , f
APB1 HCLK APB2
= 16 MHz (range 2), f
HCLK
= f , default prescaler value for
HCLK
= 4 MHz
Table 13.