Datasheet

Electrical characteristics STM32L031x4/6
56/126 DS10668 Rev 6
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
measurement scheme.
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to Dhrystone 2.1 code if not specified
otherwise.
The current consumption values are derived from the tests performed under ambient
temperature and V
DD
supply voltage conditions summarized in Table 20: 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 and prefetch is adjusted depending on fHCLK
frequency and voltage range to provide the best CPU performance unless otherwise
specified.
• When the peripherals are enabled f
APB1
= f
APB2
= f
APB
• 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 is applied to OSCI_IN input (LQFP48 package) and to CK_IN
(other packages). It follows the characteristic specified in Table 37: 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
The parameters given in Table 44, Table 20 and Table 21 are derived from tests performed
under ambient temperature and V
DD
supply voltage conditions summarized in Table 20.
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