Datasheet
STM32L431xx Electrical characteristics
DocID028800 Rev 1 93/200
Table 31. Current consumption in Sleep and Low-power sleep modes, Flash ON
Symbol Parameter
Conditions TYP MAX
(1)
Unit
-
Voltage
scaling
f
HCLK
25 °C 55 °C 85 °C 105 °C 125 °C 25 °C 55 °C 85 °C 105 °C 125 °C
I
DD
(Sleep)
Supply
current in
sleep
mode,
f
HCLK
= f
HSE
up
to 48 MHz
included, bypass
mode
pll ON above
48 MHz all
peripherals
disable
Range 2
26 MHz 0.68 0.69 0.74 0.81 0.95 0.8 0.8 0.9 1.0 1.3
mA
16 MHz 0.46 0.48 0.52 0.59 0.73 0.5 0.6 0.6 0.8 1.1
8 MHz 0.29 0.30 0.34 0.41 0.55 0.3 0.4 0.4 0.6 0.9
4 MHz 0.20 0.21 0.25 0.32 0.46 0.2 0.3 0.3 0.5 0.8
2 MHz 0.16 0.17 0.21 0.28 0.42 0.2 0.2 0.3 0.4 0.7
1 MHz 0.13 0.15 0.19 0.26 0.40 0.1 0.2 0.3 0.4 0.7
100 kHz 0.11 0.13 0.17 0.24 0.38 0.1 0.2 0.2 0.4 0.7
Range 1
80 MHz 2.23 2.25 2.30 2.38 2.54 2.5 2.5 2.6 2.8 3.1
72 MHz 2.02 2.04 2.10 2.18 2.34 2.2 2.3 2.4 2.5 2.9
64 MHz 1.82 1.84 1.89 1.98 2.14 2.0 2.1 2.1 2.3 2.6
48 MHz 1.34 1.36 1.42 1.50 1.66 1.5 1.6 1.7 1.8 2.2
32 MHz 0.93 0.95 1.01 1.09 1.25 1.1 1.1 1.2 1.4 1.7
24 MHz 0.73 0.75 0.80 0.88 1.04 0.8 0.9 1.0 1.1 1.4
16 MHz 0.53 0.55 0.60 0.68 0.84 0.6 0.6 0.7 0.9 1.2
I
DD
(LPSleep)
Supply
current in
low-power
sleep
mode
f
HCLK
= f
MSI
all peripherals disable
2 MHz 71.8 80.7 125 200 350 91.1 122.7 191.3 341.5 653.5
µA
1 MHz 45.0 57.3 101 176 325 63.2 95.4 165.4 316.5 628.7
400 kHz 27.0 40.7 84.6 158 308 43.9 75.8 147.2 297.6 609.2
100 kHz 22.8 30.9 63.3 113.2 207.7 35.2 67.9 140.9 290.8 602.4
1. Guaranteed by characterization results, unless otherwise specified.
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