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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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STM32L452VCU6 Scheda tecnica(PDF) 184 Page - STMicroelectronics |
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STM32L452VCU6 Scheda tecnica(HTML) 184 Page - STMicroelectronics |
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184 / 210 page  Electrical characteristics STM32L452xx 184/210 DocID029968 Rev 3 Figure 37. SAI slave timing waveforms SDMMC characteristics Unless otherwise specified, the parameters given in Table 98 for SDIO are derived from tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 23: 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 ₓ VDD Refer to Section 6.3.14: I/O port characteristics for more details on the input/output characteristics. Table 98. SD / MMC dynamic characteristics, VDD=2.7 V to 3.6 V(1) Symbol Parameter Conditions Min Typ Max Unit fPP Clock frequency in data transfer mode - 0 - 50 MHz - SDIO_CK/fPCLK2 frequency ratio - - - 4/3 - tW(CKL) Clock low time fPP = 50 MHz 8 10 - ns tW(CKH) Clock high time fPP = 50 MHz 8 10 - ns CMD, D inputs (referenced to CK) in MMC and SD HS mode tISU Input setup time HS fPP = 50 MHz 3.5 - - ns tIH Input hold time HS fPP = 50 MHz 2.5 - - ns CMD, D outputs (referenced to CK) in MMC and SD HS mode tOV Output valid time HS fPP = 50 MHz - 12 13 ns tOH Output hold time HS fPP = 50 MHz 10 - - ns CMD, D inputs (referenced to CK) in SD default mode tISUD Input setup time SD fPP = 50 MHz 3.5 - - ns tIHD Input hold time SD fPP = 50 MHz 3 - - ns |
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