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数据搜索系统，热门电子元器件搜索 |
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MPC875 数据表(PDF) 18 Page - Freescale Semiconductor, Inc |
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MPC875 数据表(HTML) 18 Page - Freescale Semiconductor, Inc |
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18 / 84 page  MPC875/MPC870 Hardware Specifications, Rev. 3.0 18 PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE Freescale Semiconductor Bus Signal Timing B18 D(0:31) valid to CLKOUT rising edge (setup time) 4 (MIN = 0.00 × B1 + 6.00) 6.00 — 6.00 — 6.00 — 6.00 — ns B19 CLKOUT rising edge to D(0:31) valid (hold time) 4 (MIN = 0.00 × B1 + 1.00 5) 1.00 — 1.00 — 2.00 — 2.00 — ns B20 D(0:31) valid to CLKOUT falling edge (setup time) 6(MIN = 0.00 × B1 + 4.00) 4.00 — 4.00 — 4.00 — 4.00 — ns B21 CLKOUT falling edge to D(0:31) valid (hold time) 6 (MIN = 0.00 × B1 + 2.00) 2.00 — 2.00 — 2.00 — 2.00 — ns B22 CLKOUT rising edge to CS asserted GPCM ACS = 00 (MAX = 0.25 × B1 + 6.3) 7.60 13.80 6.30 12.50 3.80 10.00 3.13 9.43 ns B22a CLKOUT falling edge to CS asserted GPCM ACS = 10, TRLX = 0 (MAX = 0.00 × B1 + 8.00) — 8.00 — 8.00 — 8.00 — 8.00 ns B22b CLKOUT falling edge to CS asserted GPCM ACS = 11, TRLX = 0, EBDF = 0 (MAX = 0.25 × B1 + 6.3) 7.60 13.80 6.30 12.50 3.80 10.00 3.13 9.43 ns B22c CLKOUT falling edge to CS asserted GPCM ACS = 11, TRLX = 0, EBDF = 1 (MAX = 0.375 × B1 + 6.6) 10.90 18.00 10.90 16.00 5.20 12.30 4.69 10.93 ns B23 CLKOUT rising edge to CS negated GPCM read access, GPCM write access ACS = 00, TRLX = 0 & CSNT = 0 (MAX = 0.00 × B1 + 8.00) 2.00 8.00 2.00 8.00 2.00 8.00 2.00 8.00 ns B24 A(0:31) and BADDR(28:30) to CS asserted GPCM ACS = 10, TRLX = 0 (MIN = 0.25 × B1 – 2.00) 5.60 — 4.30 — 1.80 — 1.13 — ns B24a A(0:31) and BADDR(28:30) to CS asserted GPCM ACS = 11 TRLX = 0 (MIN = 0.50 × B1 – 2.00) 13.20 — 10.50 — 5.60 — 4.25 — ns B25 CLKOUT rising edge to OE, WE(0:3)/BS_B[0:3] asserted (MAX = 0.00 × B1 + 9.00) — 9.00 9.00 9.00 — 9.00 ns B26 CLKOUT rising edge to OE negated (MAX = 0.00 × B1 + 9.00) 2.00 9.00 2.00 9.00 2.00 9.00 2.00 9.00 ns B27 A(0:31) and BADDR(28:30) to CS asserted GPCM ACS = 10, TRLX = 1 (MIN = 1.25 × B1 – 2.00) 35.90 — 29.30 — 16.90 — 13.60 — ns B27a A(0:31) and BADDR(28:30) to CS asserted GPCM ACS = 11, TRLX = 1 (MIN = 1.50 × B1 – 2.00) 43.50 — 35.50 — 20.70 — 16.75 — ns Table 10. Bus Operation Timings (continued) Num Characteristic 33 MHz 40 MHz 66 MHz 80 MHz Unit Min Max Min Max Min Max Min Max |
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