Electrical characteristics
STM32F103xC, STM32F103xD, STM32F103xE
(1)
Table 20. Peripheral current consumption
(continued)
Peripheral
Typical consumption at 25 °C
Unit
GPIOA
GPIOB
GPIOC
GPIOD
GPIOE
GPIOF
GPIOG
ADC1(2)
ADC2
0.55
0.72
0.72
0.55
1
0.72
1
APB2
mA
1.9
1.7
1.8
0.4
1.7
0.9
1.7
TIM1
SPI1
TIM8
USART1
ADC3
1. fHCLK = 72 MHz, fAPB1 = fHCLK/2, fAPB2 = fHCLK, default prescaler value for each peripheral.
2. Specific conditions for ADC: fHCLK = 56 MHz, fAPB1 = fHCLK/2, fAPB2 = fHCLK, fADCCLK = fAPB2/4, ADON bit
in the ADC_CR2 register is set to 1.
5.3.6
External clock source characteristics
High-speed external user clock generated from an external source
The characteristics given in Table 21 result from tests performed using an high-speed
external clock source, and under ambient temperature and supply voltage conditions
summarized in Table 10.
Table 21. High-speed external user clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
User external clock source
frequency(1)
fHSE_ext
1
8
25
MHz
VHSEH
VHSEL
tw(HSE)
OSC_IN input pin high level voltage
OSC_IN input pin low level voltage
0.7VDD
VSS
VDD
V
0.3VDD
OSC_IN high or low time(1)
OSC_IN rise or fall time(1)
16
45
tw(HSE)
ns
tr(HSE)
tf(HSE)
20
Cin(HSE) OSC_IN input capacitance(1)
5
pF
%
DuCy(HSE) Duty cycle
55
1
IL
OSC_IN Input leakage current
VSS VIN VDD
µA
1. Guaranteed by design, not tested in production.
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