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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8349EVVALDB датащи(PDF) 19 Page - Freescale Semiconductor, Inc |
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MPC8349EVVALDB датащи(HTML) 19 Page - Freescale Semiconductor, Inc |
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19 / 87 page  MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13 Freescale Semiconductor 19 DDR and DDR2 SDRAM 6.2.2 DDR and DDR2 SDRAM Output AC Timing Specifications Table 20 shows the DDR and DDR2 output AC timing specifications. Table 20. DDR and DDR2 SDRAM Output AC Timing Specifications At recommended operating conditions with GVDD of (1.8 or 2.5 V) ± 5%. Parameter Symbol 1 Min Max Unit Notes ADDR/CMD/MODT output setup with respect to MCK tDDKHAS ns 3 400 MHz 1.95 — 333 MHz 2.40 — 266 MHz 3.15 — 200 MHz 4.20 — ADDR/CMD/MODT output hold with respect to MCK tDDKHAX ns 3 400 MHz 1.95 — 333 MHz 2.40 — 266 MHz 3.15 — 200 MHz 4.20 — MCS(n) output setup with respect to MCK tDDKHCS ns 3 400 MHz 1.95 — 333 MHz 2.40 — 266 MHz 3.15 — 200 MHz 4.20 — MCS(n) output hold with respect to MCK tDDKHCX ns 3 400 MHz 1.95 — 333 MHz 2.40 — 266 MHz 3.15 — 200 MHz 4.20 — MCK to MDQS Skew tDDKHMH –0.6 0.6 ns 4 MDQ/MECC/MDM output setup with respect to MDQS tDDKHDS, tDDKLDS ps 5 400 MHz 700 — 333 MHz 775 — 266 MHz 1100 — 200 MHz 1200 — MDQ/MECC/MDM output hold with respect to MDQS tDDKHDX, tDDKLDX ps 5 400 MHz 700 — 333 MHz 900 — 266 MHz 1100 — 200 MHz 1200 — MDQS preamble start tDDKHMP –0.5 × t MCK – 0.6 –0.5 × t MCK + 0.6 ns 6 |
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