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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32MP157D датащи(PDF) 218 Page - STMicroelectronics |
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STM32MP157D датащи(HTML) 218 Page - STMicroelectronics |
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218 / 259 page  Electrical characteristics STM32MP157A/D 218/259 DS12504 Rev 5 SPI interface characteristics Unless otherwise specified, the parameters given in Table 100 for the SPI interface are derived from tests performed under the ambient temperature, fpclkx frequency and VDD supply voltage conditions summarized in Table 13: General operating conditions, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 11 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5×VDD • I/O compensation cell enabled • HSLV activated when VDD ≤ 2.7 V Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate function characteristics (NSS, SCK, MOSI, MISO for SPI). Table 99. I2C FM+ pin characteristics Symbol Parameter Conditions Min Max Unit Fmax(1) 1. The maximum frequency is defined with the following conditions: - (Tr + Tf) ≤ ⅔T - 45% < duty cycle < 55%. Maximum frequency C = 50 pF 1.71 ≤ VDD ≤ 3.6 V -1 MHz Tf(2) 2. The fall time is defined between 70% and 30% of the output waveform accordingl to I2C specification NXP UM10204 rev- Oct 2012. Output high to low level fall time - 5 ns |
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