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STM32L151x8 датащи(PDF) 88 Page - STMicroelectronics

номер детали STM32L151x8
подробное описание детали  Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC
PDF  133 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L151x8 датащи(HTML) 88 Page - STMicroelectronics

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Electrical characteristics
STM32L151x6/8/B STM32L152x6/8/B
88/133
DocID17659 Rev 12
Figure 21. I2C bus AC waveforms and measurement circuit
1. RS = series protection resistors
2. RP = pull-up resistors
3. VDD_I2C = I2C bus 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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