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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STW4810 датащи(PDF) 68 Page - STMicroelectronics |
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STW4810 датащи(HTML) 68 Page - STMicroelectronics |
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68 / 79 page  STw4810 Electrical and timing characteristics 67/78 TPHC Propagation time from Host to card Figure 14 7ns TPCH Propagation time from card to host Figure 14 7ns TSHC Clock /data skew time from host to card Figure 14 Reference is CLKOUT +/- 0.5 ns TSCH Clock /data skew time from card to host Figure 14 Reference is MMCLK +/- 0.5 ns TR Rise time 3 ns TF Fall time 3 ns C1LINE Between multimedia processor & STw4810 Bus line capacitance f < 52 Mhz 20(3) pF C2LINE Between STw4810 & MMC card Bus line capacitance f < 52 MHz 20 + 20(4) pF 1. Guaranteed by design 2. MMC interface pull up resistors are in EMIF06-HCM01F2 device (7 K Ω for CMD; 75 KΩ for Data wires) 3. 20 pF for equivalent board parasitic capacitance. 4. 20 pF for EMIF06 protection + 20 pF for board parasitic capacitance. Table 51. SD/MMC card interface (continued) Symbol Description Test conditions Min. Typ. Max. Units |
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