STM32L151RCT6A Datasheet, PDF (71/136 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC

STM32L151xC STM32L152xC
Electrical characteristics
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 ambient temperature and V_DD supply
voltage conditions summarized in Table 14.
Table 24. Typical and maximum timings in Low power modes
Symbol
Parameter
Conditions
Typ _Max⁽¹⁾ Unit
t_WUSLEEP
t_{WUSLEEP_LP}
t_WUSTOP
t_WUSTDBY
Wakeup from Sleep mode
Wakeup from Low power
sleep mode
f_HCLK = 262 kHz
f_HCLK = 32 MHz
f_HCLK = 262 kHz
Flash enabled
f_HCLK = 262 kHz
Flash switched OFF
0.4 -
46
-
46
-
Wakeup from Stop mode,
regulator in Run mode
f_HCLK = f_MSI = 4.2 MHz
8.2
-
f_HCLK = f_MSI = 4.2 MHz
Voltage range 1 and 2
7.7 8.9
f_HCLK = f_MSI = 4.2 MHz
Voltage range 3
8.2 13.1 µs
Wakeup from Stop mode, ^{fHCLK = fMSI = 2.1 MHz}
regulator in low power mode ^fHCLK ^{= f}MSI ^{= 1.05 MHz}
f_HCLK = f_MSI = 524 kHz
f_HCLK = f_MSI = 262 kHz
f_HCLK = f_MSI = 131 kHz
f_HCLK = MSI = 65 kHz
Wakeup
FWU bit
from
=1
Standby
mode
f_HCLK
=
MSI
=
2.1
MHz
10.2
16
31
57
112
221
58
13.4
20
37
66
123
236
104
Wakeup
FWU bit
from
=0
Standby
mode
f_HCLK
=
MSI
=
2.1
MHz
2.6 3.25 ms
1. Based on characterization, not tested in production, unless otherwise specified
Doc ID 022799 Rev 3
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