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STM32F412RGH6 Datasheet(PDF) 130 Page - STMicroelectronics

Part # STM32F412RGH6
Description  Arm®-Cortex®-M4 32b MCUFPU, 125 DMIPS, 1MB Flash, 256KB RAM, USB OTG FS, 17 TIMs, 1 ADC, 17 comm. interfaces
PDF  201 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F412RGH6 Datasheet(HTML) 130 Page - STMicroelectronics

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Electrical characteristics
STM32F412xE/G
130/201
DocID028087 Rev 7
Figure 38. 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.
4. The maximum data hold time has only to be met if the interface does not stretch the low period of SCL
signal.
5. The minimum width of the spikes filtered by the analog filter is above tSP (max)
Table 63. SCL frequency (fPCLK1= 50 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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