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STM32F401CC Datasheet(PDF) 97 Page - STMicroelectronics

Part # STM32F401CC
Description  ARM Cortex-M4 32b MCUFPU, 105 DMIPS, 256KB Flash/64KB RAM, 11 TIMs, 1 ADC, 11 comm. interfaces
PDF  135 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F401CC Datasheet(HTML) 97 Page - STMicroelectronics

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Electrical characteristics
STM32F401xB STM32F401xC
97/135
DocID024738 Rev 6
Figure 33. I2C bus AC waveforms and measurement circuit
1. RS = series protection resistor.
2. RP = external pull-up resistor.
3. VDD_I2C is the I2C bus power supply.
Table 60. SCL frequency (fPCLK1= 42 MHz, VDD = VDD_I2C = 3.3 V)(1)(2)
1. RP = External pull-up resistance, fSCL = I2C 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 is
±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
0x8019
300
0x8021
200
0x8032
100
0x0096
50
0x012C
20
0x02EE



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