STM32F479AI datasheet(95/208 Pages) STMICROELECTRONICS

95 / 208 page

DocID028010 Rev 2

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STM32F479xx

Electrical characteristics

187

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 18: Limitations depending on the operating power supply range).

•

When the regulator is OFF, the V12 is provided externally, as described in Table 17:

General operating conditions.

•

The voltage scaling and over-drive mode are adjusted to fHCLK frequency as follows:

–

Scale 3 for fHCLK ≤ 120 MHz

–

Scale 2 for 120 MHz < fHCLK ≤ 144 MHz

–

Scale 1 for 144 MHz < fHCLK ≤ 180 MHz. The over-drive is only ON at 180 MHz.

•

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 ambient temperature 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 ≤ 2.1 V the maximum frequency is 168 MHz.

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