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STM32F103CBT7XXX bảng dữ liệu(PDF) 66 Page - STMicroelectronics

tên linh kiện STM32F103CBT7XXX
Giải thích chi tiết về linh kiện  Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32F103CBT7XXX bảng dữ liệu(HTML) 66 Page - STMicroelectronics

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Electrical characteristics
STM32F103x8, STM32F103xB
66/96
Doc ID 13587 Rev 12
Figure 31.
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
ai14133d
Start
SDA
100
Ω
4.7k
Ω
I²C bus
4.7k
Ω
100
Ω
VDD
VDD
STM32F10x
SDA
SCL
tf(SDA)
tr(SDA)
SCL
th(STA)
tw(SCLH)
tw(SCLL)
tsu(SDA)
tr(SCL)
tf(SCL)
th(SDA)
Start repeated
Start
tsu(STA)
tsu(STO)
Stop
tsu(STO:STA)



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