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STM32F102xB bảng dữ liệu(PDF) 57 Page - STMicroelectronics

tên linh kiện STM32F102xB
Giải thích chi tiết về linh kiện  Medium-density USB access line,ARM-based 32b MCU with 64/128KB Flash,USB FS interface,6 timers, ADC&8 com. interfaces
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F102xB bảng dữ liệu(HTML) 57 Page - STMicroelectronics

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STM32F102x8, STM32F102xB
Electrical characteristics
Doc ID 15056 Rev 4
57/76
Table 39.
I2C characteristics
Symbol
Parameter
Standard mode I2C(1)
1.
Values guaranteed by design, not tested in production.
Fast mode I2C(1)(2)
2.
fPCLK1 must be at least 2 MHz to achieve the maximum standard mode I
2C frequencies. It must be higher
than 4 MHz to achieve the maximum fast mode I2C frequencies, and be a multiple of 10MHz to reach the
I2C fast mode maximum clock speed of 400 KHz.
Unit
Min
Max
Min
Max
tw(SCLL)
SCL clock low time
4.7
1.3
µs
tw(SCLH)
SCL clock high time
4.0
0.6
tsu(SDA)
SDA setup time
250
100
ns
th(SDA)
SDA data hold time
0
(3)
3.
The maximum Data hold time has only to be met if the interface does not stretch the low period of SCL
signal.
0900(3)
tr(SDA)
tr(SCL)
SDA and SCL rise time
1000
20+0.1Cb
300
tf(SDA)
tf(SCL)
SDA and SCL fall time
300
300
th(STA)
Start condition hold time
4.0
0.6
µs
tsu(STA)
Repeated Start condition setup
time
4.7
0.6
tsu(STO)
Stop condition setup time
4.0
0.6
µs
tw(STO:STA)
Stop to Start condition time (bus
free)
4.7
1.3
µs
Cb
Capacitive load for each bus line
400
400
pF



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