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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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MPC855T Arkusz danych(PDF) 16 Page - Freescale Semiconductor, Inc |
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MPC855T Arkusz danych(HTML) 16 Page - Freescale Semiconductor, Inc |
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16 / 80 page  MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8 16 Freescale Semiconductor Bus Signal Timing B9 CLKOUT to A(0:31), BADDR(28:30), RD/WR, BURST, D(0:31), DP(0:3), TSIZ(0:1), REG, RSV, AT(0:3), PTR High-Z 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.04 ns B11 CLKOUT to TS, BB assertion 7.58 13.58 6.25 12.25 5.00 11.00 3.80 11.29 ns B11a CLKOUT to TA, BI assertion (when driven by the memory controller or PCMCIA interface) 2.50 9.25 2.50 9.25 2.50 9.25 2.50 9.75 ns B12 CLKOUT to TS, BB negation 7.58 14.33 6.25 13.00 5.00 11.75 3.80 8.54 ns B12a CLKOUT to TA, BI negation (when driven by the memory controller or PCMCIA interface) 2.50 11.00 2.50 11.00 2.50 11.00 2.50 9.00 ns B13 CLKOUT to TS, BB High-Z 7.58 21.58 6.25 20.25 5.00 19.00 3.80 14.04 ns B13a CLKOUT to TA, BI High-Z (when driven by the memory controller or PCMCIA interface) 2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00 ns B14 CLKOUT to TEA assertion 2.50 10.00 2.50 10.00 2.50 10.00 2.50 9.00 ns B15 CLKOUT to TEA High-Z 2.50 15.00 2.50 15.00 2.50 15.00 2.50 15.00 ns B16 TA, BI valid to CLKOUT (setup time) 9.75 — 9.75 — 9.75 — 6.00 — ns B16a TEA, KR, RETRY, CR valid to CLKOUT (setup time) 10.00 — 10.00 — 10.00 — 4.50 — ns B16b BB, BG, BR, valid to CLKOUT (setup time)5 8.50 — 8.50 — 8.50 — 4.00 — ns B17 CLKOUT to TA, TEA, BI, BB, BG, BR valid (hold time) 1.00 — 1.00 — 1.00 — 2.00 — ns B17a CLKOUT to KR, RETRY, CR valid (hold time) 2.00 — 2.00 — 2.00 — 2.00 — ns B18 D(0:31), DP(0:3) valid to CLKOUT rising edge (setup time)6 6.00 — 6.00 — 6.00 — 6.00 — ns B19 CLKOUT rising edge to D(0:31), DP(0:3) valid (hold time)6 1.00 — 1.00 — 1.00 — 2.00 — ns B20 D(0:31), DP(0:3) valid to CLKOUT falling edge (setup time)7 4.00 — 4.00 — 4.00 — 4.00 — ns B21 CLKOUT falling edge to D(0:31), DP(0:3) valid (hold time)7 2.00 — 2.00 — 2.00 — 2.00 — ns B22 CLKOUT rising edge to CS asserted GPCM ACS = 00 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.04 ns B22a CLKOUT falling edge to CS asserted GPCM ACS = 10, TRLX = 0 — 8.00 — 8.00 — 8.00 — 8.00 ns B22b CLKOUT falling edge to CS asserted GPCM ACS = 11, TRLX = 0, EBDF = 0 7.58 14.33 6.25 13.00 5.00 11.75 3.80 10.54 ns B22c CLKOUT falling edge to CS asserted GPCM ACS = 11, TRLX = 0, EBDF = 1 10.86 17.99 8.88 16.00 7.00 14.13 5.18 12.31 ns Table 7. Bus Operation Timings (continued) Num Characteristic 33 MHz 40 MHz 50 MHz 66 MHz Unit Min Max Min Max Min Max Min Max |
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