Datasheet

DocID029968 Rev 3 107/210
STM32L452xx Electrical characteristics
186
Table 38. Typical current consumption in Run modes, with different codesrunning from
Flash, ART disable and power supplied by external SMPS (V
DD12
= 1.05 V)
Symbol Parameter
Conditions
(1)
TYP
Unit
TYP
Unit
-
Voltage
scaling
Code 25 °C 25 °C
I
DD_ALL
(Run)
Supply
current in
Run mode
f
HCLK
= f
HSE
up to
48 MHz included,
bypass mode
PLL ON above
48 MHz
all peripherals
f
HCLK
= 26 MHz
Reduced code
(2)
1.08
mA
42
µA/MHz
Coremark 0.98 38
Dhrystone 2.1 0.98 38
Fibonacci 0.90 35
While(1) 0.86 33
1. All values are obtained by calculation based on measurements done without SMPS and using following parameters: SMPS
input = 3.3 V, SMPS efficiency = 85%, V
DD12
= 1.05 V
2. Reduced code used for characterization results provided in Table 27, Table 29, Table 31.
Table 39. Typical current consumption in Run and Low-power run modes, with different codes
running from SRAM1
Symbol Parameter
Conditions TYP
Unit
TYP
Unit
-
Voltage
scaling
Code 25 °C 25 °C
I
DD_ALL
(Run)
Supply
current in
Run mode
f
HCLK
= f
HSE
up to
48 MHz included,
bypass mode
PLL ON above
48 MHz all
peripherals
disable
Range 2
f
HCLK
= 26 MHz
Reduced code
(1)
2.40
mA
92
µA/MHz
Coremark 2.20 85
Dhrystone 2.1 2.35 90
Fibonacci 2.20 85
While(1) 2.30 88
Range 1
f
HCLK
= 80 MHz
Reduced code
(1)
8.55
mA
107
µA/MHz
Coremark 7.75 97
Dhrystone 2.1 8.45 106
Fibonacci 7.80 98
While(1) 8.75 109
I
DD_ALL
(LPRun)
Supply
current in
Low-power
run
f
HCLK
= f
MSI
= 2 MHz
all peripherals disable
Reduced code
(1)
220
µA
110
µA/MHz
Coremark 190 95
Dhrystone 2.1 215 108
Fibonacci 200 100
While(1) 210 105
1. Reduced code used for characterization results provided in Table 27, Table 29, Table 31.
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