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STM32L151xC STM32L152xC
Electrical characteristics
110
6.3.4
Supply current characteristics
The current consumption is a function of several parameters and factors such as the
operating voltage, temperature, I/O pin loading, device software configuration, operating
frequencies, I/O pin switching rate, program location in memory and executed binary code.
The current consumption is measured as described in
Figure 14: Current consumption
.
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to the Dhrystone 2.1 code, unless
otherwise specified. The current consumption values are derived from tests performed
under ambient temperature T
A
= 25 °C and V
DD
supply voltage conditions summarized in
Table 14: General operating conditions
, unless otherwise specified.
The MCU is placed under the following conditions:
•
All I/O pins are configured in analog input mode
•
All peripherals are disabled except when explicitly mentioned.
•
The Flash memory access time, 64-bit access and prefetch is adjusted depending on
f
HCLK
frequency and voltage range to provide the best CPU performance.
•
When the peripherals are enabled f
APB1
= f
APB2
= f
AHB
.
•
When PLL is ON, the PLL inputs are equal to HSI = 16 MHz (if internal clock is used) or
HSE = 16 MHz (if HSE bypass mode is used).
•
The HSE user clock applied to OSCI_IN input follows the characteristic specified in
Table 27: High-speed external user clock characteristics
•
For maximum current consumption V
DD
= V
DDA
= 3.6 V is applied to all supply pins.
•
For typical current consumption V
DD
= V
DDA
= 3.0 V is applied to all supply pins if not
specified otherwise.
5. To guarantee less than 1% VREF_OUT deviation.
