Datasheet

Electrical characteristics STM32F050xx
46/97 Doc ID 023683 Rev 1
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 24. Typical and maximum current consumption from V
BAT
supply
Symbol Parameter Conditions
Typ @ V
BAT
Max
(1)
Unit
= 1.65 V
= 1.8 V = 2.4 V
= 2.7 V
= 3.3 V = 3.6 V
T
A
=
25 °C
T
A
=
85 °C
T
A
=
105 °C
I
DD
_
VBAT
Backup
domain
supply
current
LSE & RTC ON; “Xtal
mode”: lower driving
capability;
LSEDRV[1:0] = '00'
0.41 0.43 0.53 0.58 0.71 0.80 0.85 1.1 1.5
µA
LSE & RTC ON; “Xtal
mode” higher driving
capability;
LSEDRV[1:0] = '11'
0.71 0.75 0.85 0.91 1.06 1.16 1.25 1.55 2
1. Data based on characterization results, not tested in production.