Datasheet

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STM32L431xx Electrical characteristics
168
6.3.5 Supply current characteristics
The current consumption is a function of several parameters and factors such as the
operating voltage, ambient 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 18: Current consumption
measurement scheme.
Typical and maximum current consumption
The MCU is placed under the following conditions:
• All I/O pins are in analog input mode
• All peripherals are disabled except when explicitly mentioned
• The Flash memory access time is adjusted with the minimum wait states number,
depending on the f
HCLK
frequency (refer to the table “Number of wait states according
to CPU clock (HCLK) frequency” available in the RM0392 reference manual).
• When the peripherals are enabled f
PCLK
= f
HCLK
The parameters given in Table 25 to Table 38 are derived from tests performed under
ambient temperature and supply voltage conditions summarized in Table 21: General
operating conditions.
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