Datasheet

DocID025083 Rev 7 53/121
STM32F303x6/x8 Electrical characteristics
101
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 12: Scheme of the current-
consumption measurement.
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to CoreMark code.
Note: The total current consumption is the sum of the IDD and IDDA values.
Typical and maximum current consumption
The MCU is placed under the following conditions:
• All I/O pins are in input mode with a static value at V
DD
or V
SS
(no load)
• All peripherals are disabled except when explicitly mentioned
• The Flash memory access time is adjusted to the f
HCLK
frequency (0 wait state from 0
to 24 MHz,1 wait state from 24 to 48 MHz and 2 wait states from 48 to 72 MHz)
• Prefetch in ON (reminder: this bit must be set before clock setting and bus prescaling)
• When the peripherals are enabled f
PCLK2
= f
HCLK
and f
PCLK1
= f
HCLK/2
• When f
HCLK
> 8 MHz, the PLL is ON and the PLL input is equal to HSI/2 (4 MHz) or
HSE (8 MHz) in bypass mode.
The parameters given in Table 26 to Table 30 are derived from tests performed under
ambient temperature and supply voltage conditions summarized in Table 20.
Table 25. Internal reference voltage calibration values
Calibration value name Description Memory address
V
REFINT_CAL
Raw data acquired at
temperature of 30 °C
V
DDA
= 3.3 V
0x1FFF F7BA - 0x1FFF F7BB
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