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STM32F103C4T6ATR 数据表(PDF) 58 Page - STMicroelectronics

部件名 STM32F103C4T6ATR
功能描述  Low-density performance line, ARM-based 32-bit MCU with 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, 6 communication interfaces
PDF  80 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F103C4T6ATR 数据表(HTML) 58 Page - STMicroelectronics

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Electrical characteristics
STM32F103x4, STM32F103x6
58/80
Doc ID 15060 Rev 3
Figure 24.
I2C bus AC waveforms and measurement circuit
1.
Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
Table 40.
SCL frequency (fPCLK1= 36 MHz.,VDD = 3.3 V)
(1)(2)
1.
RP = External pull-up resistance, fSCL = I
2C speed,
2.
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 k
400
0x801E
300
0x8028
200
0x803C
100
0x00B4
50
0x0168
20
0x0384
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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