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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX8MPCEC датащи(PDF) 48 Page - NXP Semiconductors |
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IMX8MPCEC датащи(HTML) 48 Page - NXP Semiconductors |
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48 / 111 page  i.MX 8M Plus Applications Processor Datasheet for Consumer Products, Rev. 0, 03/2021 48 NXP Semiconductors Electrical characteristics 3.8.2 Ultra-high-speed SD/SDIO/MMC host interface (uSDHC) AC timing This section describes the electrical information of the uSDHC, which includes SD/eMMC5.1 (single data rate) timing, eMMC5.1/SD3.0 (dual data rate) timing and SDR50/SDR104 AC timing. 3.8.2.1 SD3.0/eMMC5.1 (single data rate) AC timing Figure 15 depicts the timing of SD3.0/eMMC5.1, and Table 39 lists the SD3.0/eMMC5.1 timing characteristics. Figure 15. SD3.0/eMMC5.1 (SDR) timing CS8 ECSPIx_MOSI Hold Time tHmosi 4— ns CS9 ECSPIx_MISO Propagation Delay (CLOAD =20pF) tPDmiso 419 ns Table 39. SD3.0/eMMC5.1 (SDR) interface timing specification ID Parameter Symbols Min Max Unit Card Input Clock SD1 Clock Frequency (Low Speed) fPP 1 0 400 kHz Clock Frequency (SD/SDIO Full Speed/High Speed) fPP 2 0 25/50 MHz Clock Frequency (MMC Full Speed/High Speed) fPP 3 0 20/52 MHz Clock Frequency (Identification Mode) fOD 100 400 kHz SD2 Clock Low Time tWL 7— ns SD3 Clock High Time tWH 7— ns Table 38. ECSPI Slave mode timing parameters (continued) (Sheet 2 of 2) ID Parameter Symbol Min Max Unit SD1 SD3 SD5 SD4 SD7 SDx_CLK SD2 SD8 SD6 Output from uSDHC to card Input from card to uSDHC SDx_DATA[7:0] SDx_DATA[7:0] |
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