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STM32F103C8 Datasheet(PDF) 50 Page - STMicroelectronics

Part # STM32F103C8
Description  Performance line, ARM-based 32-bit MCU with Flash, USB, CAN, seven 16-bit timers, two ADCs and nine communication interfaces
PDF  67 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F103C8 Datasheet(HTML) 50 Page - STMicroelectronics

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Electrical characteristics
STM32F103xx
50/67
Figure 18.
I2C bus AC waveforms and measurement circuit
1.
Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
Table 35.
SCL frequency (fPCLK1= 36 MHz.,VDD = 3.3 V)
(1)(2)(3)
1.
TBD = to be determined.
2.
RP = External pull-up resistance, fSCL = I
2C speed,
3.
For speeds around 200 kHz, the tolerance on the achieved speed is of
±5%. For other speed ranges, the
tolerance on the achieved speed
±2%. These variations depend on the accuracy of the external
components used to design the application.
fSCL (kHz)
I2C_CCR value
RP = 4.7 kΩ
400
TBD
300
TBD
200
TBD
100
TBD
50
TBD
20
TBD
ai14149b
START
SDA
100
Ω
4.7k
Ω
I2C bus
4.7k
Ω
100
Ω
VDD
VDD
STM32F103xx
SDA
SCL
tf(SDA)
tr(SDA)
SCL
th(STA)
tw(SCKH)
tw(SCKL)
tsu(SDA)
tr(SCK)
tf(SCK)
th(SDA)
S TART REPEATED
START
tsu(STA)
tsu(STO)
S TOP
tsu(STA:STO)



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