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STM32L162RE データシート(PDF) 93 Page - STMicroelectronics

部品番号 STM32L162RE
部品情報  Ultra-low-power platform
PDF  129 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L162RE データシート(HTML) 93 Page - STMicroelectronics

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STM32L162xE
Electrical characteristics
111
Figure 19. 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. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
Table 48. SCL frequency (fPCLK1= 32 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
0x801B
300
0x8024
200
0x8035
100
0x00A0
50
0x0140
20
0x0320



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