Datasheet

DocID15056 Rev 5 39/80
STM32F102x8, STM32F102xB Electrical characteristics
79
Typical current consumption
The MCU is placed under the following conditions:
• All I/O pins are in input mode with a static value at V
DD
or V
SS
(no load)
• All peripherals are disabled except if it is explicitly mentioned
• The Flash access time is adjusted to f
HCLK
frequency (0 wait state from 0 to 24 MHz, 1
wait state from 24 to 48 MHz)
• Prefetch is on (reminder: this bit must be set before clock setting and bus prescaling)
• When the peripherals are enabled f
PCLK1
= f
HCLK/4
, f
PCLK2
= f
HCLK/2
, f
ADCCLK
=
f
PCLK2
/4
The parameters given in Table 17 are derived from tests performed under ambient
temperature and V
DD
supply voltage conditions summarized in Table 8.
Table 16. Typical current consumption in Run mode, code with data processing
running from Flash
Symbol Parameter Conditions f
HCLK
Typ
(1)
1. Typical values are measures at T
A
= 25 °C, V
DD
= 3.3 V.
Typ
(1)
Unit
All peripherals
enabled
(2)
2. Add an additional power consumption of 0.8 mA per ADC for the analog part. In applications, this
consumption occurs only while the ADC is on (ADON bit is set in the ADC_CR2 register).
All peripherals
disabled
I
DD
Supply
current in
Run mode
External
clock
(3)
48 MHz 24.2 18.6
mA
36 MHz 19 14.8
24 MHz 12.9 10.1
16 MHz 9.3 7.4
8 MHz 5.5 4.6
4 MHz 3.3 2.8
2 MHz 2.2 1.9
1 MHz 1.6 1.45
500 kHz 1.3 1.25
125 kHz 1.08 1.06
Running on
high speed
internal RC
(HSI), AHB
prescaler
used to
reduce the
frequency
48 MHz 23.5 17.9
36 MHz 18.3 14.1
24 MHz 12.2 9.5
16 MHz 8.5 6.8
8 MHz 4.9 4
4 MHz 2.7 2.2
2 MHz 1.6 1.4
1 MHz 1.02 0.9
500 kHz 0.73 0.67
125 kHz 0.5 0.48