Datasheet
STM32L431xx Electrical characteristics
DocID028800 Rev 1 99/200
I
DD
(SRAM2)
(4)
Supply current
to be added in
Standby mode
when SRAM2
is retained
-
1.8 V 173 349 1 009 2 158 4 542 249 527 1604 3402 6908
nA
2.4 V 174 345 1 015 2 163 4 535 271 589 1623 3438 6924
3 V 178 350 1 019 2 148 4 419 277 594 1628 3467 6935
3.6 V 184 352 1 033 2 208 4 610 293 611 1631 3480 6948
I
DD
(wakeup
from
Standby)
Supply current
during wakeup
from Standby
mode
Wakeup clock is
MSI = 4 MHz.
See
(5)
.
3 V1.23---------mA
1. Guaranteed by characterization results, unless otherwise specified.
2. Guaranteed by test in production.
3. Based on characterization done with a 32.768 kHz crystal (MC306-G-06Q-32.768, manufacturer JFVNY) with two 6.8 pF loading capacitors.
4. The supply current in Standby with SRAM2 mode is: I
DD
(Standby) + I
DD
(SRAM2). The supply current in Standby with RTC with SRAM2 mode is: I
DD
(Standby + RTC) +
I
DD
(SRAM2).
5. Wakeup with code execution from Flash. Average value given for a typical wakeup time as specified in Table 40: Low-power mode wakeup timings.
Table 36. Current consumption in Standby mode (continued)
Symbol Parameter
Conditions TYP MAX
(1)
Unit
-V
DD
25 °C 55 °C 85 °C 105 °C 125 °C 25 °C 55 °C 85 °C 105 °C 125 °C
Table 37. Current consumption in Shutdown mode
Symbol Parameter
Conditions TYP MAX
(1)
Unit
-V
DD
25 °C 55 °C 85 °C 105 °C 125 °C 25 °C 55 °C 85 °C 105 °C 125 °C
I
DD
(Shutdown)
Supply current
in Shutdown
mode
(backup
registers
retained) RTC
disabled
-
1.8 V 7.82 190 386 1 286 3 854 25.0 255 1721 5052 15543
nA
2.4 V 23 229 485 1 517 4 431 34.9 270 2085 5878 17639
3 V 44.3 290 634 1 878 5 310 70.1 345 2454 6755 19984
3.6 V 212 397 977 2 516 6 656 119.1 496 2992 7939 22860
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