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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8321EVRADDC датащи(PDF) 16 Page - Freescale Semiconductor, Inc |
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MPC8321EVRADDC датащи(HTML) 16 Page - Freescale Semiconductor, Inc |
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16 / 82 page  MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4 16 Freescale Semiconductor DDR1 and DDR2 SDRAM Figure 4 shows the input timing diagram for the DDR controller. Figure 4. DDR Input Timing Diagram 6.2.2 DDR1 and DDR2 SDRAM Output AC Timing Specifications Table 19 provides the output AC timing specifications for the DDR1 and DDR2 SDRAM interfaces. Table 19. DDR1 and DDR2 SDRAM Output AC Timing Specifications At recommended operating conditions with D n_GVDD of (1.8 or 2.5 V) ± 5%. Parameter Symbol1 Min Max Unit Notes MCK cycle time, (MCK/MCK crossing) tMCK 7.5 10 ns 2 ADDR/CMD output setup with respect to MCK tDDKHAS ns 3 266 MHz 200 MHz 2.5 3.5 — — ADDR/CMD output hold with respect to MCK tDDKHAX ns 3 266 MHz 200 MHz 2.5 3.5 — — MCS output setup with respect to MCK tDDKHCS ns 3 266 MHz 200 MHz 2.5 3.5 — — MCS output hold with respect to MCK tDDKHCX ns 3 266 MHz 200 MHz 2.5 3.5 — — MCK to MDQS Skew tDDKHMH –0.6 0.6 ns 4 MCK[n] MCK[n] tMCK MDQ[x] MDQS[n] tDISKEW D1 D0 tDISKEW |
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