STM32F730X8 datasheet(96/202 Pages) STMICROELECTRONICS

96 / 202 page

Electrical characteristics

STM32F730x8

96/202

DS12536 Rev 2

6.3.7

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 21: Current consumption

measurement scheme.

All the run-mode current consumption measurements given in this section are performed

with a reduced code that gives a consumption equivalent to CoreMark code.

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 VDD or VSS (no load).

•

All peripherals are disabled except if it is explicitly mentioned.

•

The Flash memory access time is adjusted both to fHCLK frequency and VDD range

(see Table 17: Limitations depending on the operating power supply range).

•

When the regulator is ON, the voltage scaling and over-drive mode are adjusted to

fHCLK frequency as follows:

–

Scale 3 for fHCLK ≤ 144 MHz

–

Scale 2 for 144 MHz < fHCLK ≤ 168 MHz

–

Scale 1 for 168 MHz < fHCLK ≤ 216 MHz. The over-drive is only ON at 216 MHz.

•

When the regulator is OFF, the V12 is provided externally as described in Table 16:

General operating conditions:

•

The system clock is HCLK, fPCLK1 = fHCLK/4, and fPCLK2 = fHCLK/2.

•

External clock frequency is 25 MHz and PLL is ON when fHCLK is higher than 25 MHz.

•

The typical current consumption values are obtained for 1.7 V

≤ VDD ≤ 3.6 V voltage

range and for TA= 25 °C unless otherwise specified.

•

The maximum values are obtained for 1.7 V

≤ VDD ≤ 3.6 V voltage range and a

maximum ambient temperature (TA) unless otherwise specified.

•

For the voltage range 1.7 V

≤ VDD ≤ 3.6 V, the maximum frequency is 180 MHz.

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