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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F051C6 датащи(PDF) 86 Page - STMicroelectronics |
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STM32F051C6 датащи(HTML) 86 Page - STMicroelectronics |
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86 / 104 page  STM32F051x Electrical characteristics Doc ID 022265 Rev 3 87/105 Figure 25. I2C bus AC waveforms and measurement circuit 1. Measurement points are done at CMOS levels: 0.3 VDD and 0.7 VDD. SPI/I2S characteristics Unless otherwise specified, the parameters given in Table 66 for SPI or in Table 67 for I2S are derived from tests performed under ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 20. Refer to Section 6.3.13: I/O port characteristics for more details on the input/output alternate function characteristics (NSS, SCK, MOSI, MISO for SPI and WS, CK, SD for I2S). Table 65. I2C analog filter characteristics(1) 1. Guaranteed by design, not tested in production. Symbol Parameter Min Max Unit tSP Pulse width of spikes that are suppressed by the analog filter 50 260 ns Ω Ω Table 66. SPI characteristics Symbol Parameter Conditions Min Max Unit fSCK 1/tc(SCK) SPI clock frequency Master mode - 18 MHz Slave mode - 18 tr(SCK) tf(SCK) SPI clock rise and fall time Capacitive load: C = 15 pF - 6 ns |
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