Datasheet

Electrical characteristics STM32F103x8, STM32F103xB
50/105 DocID13587 Rev 16
On-chip peripheral current consumption
The current consumption of the on-chip peripherals is given in Table 19. 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 unless otherwise mentioned
 the given value is calculated by measuring the current consumption
– with all peripherals clocked off
– with only one peripheral clocked on
 ambient operating temperature and V
DD
supply voltage conditions summarized in
Table 6
Table 19. Peripheral current consumption
(1)
1. f
HCLK
= 72 MHz, f
APB1
= f
HCLK
/2, f
APB2
= f
HCLK
, default prescaler value for each peripheral.
Peripheral Typical consumption at 25 °C
Unit
APB1
TIM2 1.2
mA
TIM3 1.2
TIM4 0.9
SPI2 0.2
USART2 0.35
USART3 0.35
I2C1 0.39
I2C2 0.39
USB 0.65
CAN 0.72
APB2
GPIO A 0.47
mA
GPIO B 0.47
GPIO C 0.47
GPIO D 0.47
GPIO E 0.47
ADC1
(2)
2. Specific conditions for ADC: f
HCLK
= 56 MHz, f
APB1
= f
HCLK
/2, f
APB2
= f
HCLK
, f
ADCCLK
= f
APB2/4
, ADON bit
in the ADC_CR2 register is set to 1.
1.81
ADC2 1.78
TIM1 1.6
SPI1 0.43
USART1 0.85