STM32F051R6T6 Datasheet, PDF (50/104 Pages) STMicroelectronics – Low- and medium-density advanced ARM-based 32-bit MCU

STM32F051x
Electrical characteristics
Typical current consumption
The MCU is placed under the following conditions:
● V_DD=V_DDA=3.3 V
● All I/O pins are in analog input configuration
● The Flash access time is adjusted to f_HCLK 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, f_PCLK = f_HCLK
● 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
f_HCLK
Typ
Peripherals Peripherals ^Unit
enabled
disabled
48 MHz
23.3
36 MHz
17.6
32 MHz
15.9
Supply current in Run
I_DD
mode from V_DD
supply
24 MHz
12.4
16 MHz
8.5
8 MHz
4.5
4 MHz
2.8
2 MHz
1.7
Running from _{1 MHz}
1.3
HSE crystal
clock 8 MHz, ^{500 kHz}
1.0
code
48 MHz
158
executing
from Flash ^{36 MHz}
120
32 MHz
108
I_DDA
Supply current in Run
mode from V_DDA
supply
24 MHz
83
16 MHz
60
8 MHz
2.43
4 MHz
2.43
2 MHz
2.43
1 MHz
2.43
500 kHz
2.43
11.5
9.0
8.0
7.5
5.2
mA
3.0
1.9
1.3
1.0
0.9
158
120
108
83
60
µA
2.43
2.43
2.43
2.43
2.43
Doc ID 022265 Rev 3
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