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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8270VRP датащи(PDF) 20 Page - Freescale Semiconductor, Inc |
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MPC8270VRP датащи(HTML) 20 Page - Freescale Semiconductor, Inc |
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20 / 80 page  MPC8280 PowerQUICC II™ Family Hardware Specifications, Rev. 1.7 20 Freescale Semiconductor AC Electrical Characteristics Table 12 lists SIU output characteristics. NOTE Activating data pipelining (setting BRx[DR] in the memory controller) improves the AC timing. Table 12. AC Characteristics for SIU Outputs 1 1 Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal. Timings are measured at the pin. Spec Number Characteristic Value (ns) Max Min Maximum Delay Minimum Delay 66 MHz 83 MHz 100 MHz 66 MHz 83 MHz 100 MHz sp31 sp30 PSDVAL/TEA/TA 76 5.5 111 sp32 sp30 ADD/ADD_atr./BADDR/CI/GBL/WT 8 6.5 5.5 1 1 1 sp33a sp30 Data bus 2 2 To achieve 1 ns of hold time at 66, 83, or 100 MHz, a minimum loading of 20 pF is required. 6.5 6.5 5.5 0.7 0.7 0.7 sp33b sp30 DP 6 5.5 5.5 1 1 1 sp34 sp30 Memory controller signals/ALE 6 5.5 5.5 1 1 1 sp35 sp30 All other signals 6 5.5 5.5 1 1 1 sp35a sp30 AP 7 7 7111 |
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