STM32F051C6 datasheet(50/104 Pages) STMICROELECTRONICS

50 / 104 page

STM32F051x

Electrical characteristics

Doc ID 022265 Rev 3

51/105

Typical current consumption

The MCU is placed under the following conditions:

●

VDD=VDDA=3.3 V

●

All I/O pins are in analog input configuration

●

The Flash access time is adjusted to fHCLK frequency (0 wait states from 0 to 24 MHz,

1 wait state above)

●

Prefetch is ON when the peripherals are enabled, otherwise it is OFF

●

When the peripherals are enabled, fPCLK = fHCLK

●

PLL is used for frequencies greater than 8 MHz

●

AHB prescaler of 2, 4, 8 and 16 is used for the frequencies 4 MHz, 2 MHz, 1 MHz and

500 kHz respectively

●

A development tool is connected to the board and the parasitic pull-up current is around

30 µA

Table 30.

Typical current consumption in Run mode, code with data processing

running from Flash

Symbol

Parameter

Conditions

fHCLK

Typ

Unit

Peripherals

enabled

Peripherals

disabled

IDD

Supply current in Run

mode from VDD

supply

Running from

HSE crystal

clock 8 MHz,

code

executing

from Flash

48 MHz

23.3

11.5

36 MHz

17.6

9.0

32 MHz

15.9

8.0

24 MHz

12.4

7.5

16 MHz

8.5

5.2

8 MHz

4.5

3.0

4 MHz

2.8

1.9

2 MHz

1.7

1.3

1 MHz

1.3

1.0

500 kHz

1.0

0.9

IDDA

Supply current in Run

mode from VDDA

supply

48 MHz

158

µA

36 MHz

120

32 MHz

108

24 MHz

16 MHz

8 MHz

2.43

4 MHz

2.43

2 MHz

2.43

1 MHz

2.43

500 kHz

2.43

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