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EPM9320LI84-20 Datasheet(PDF) 36 Page - Altera Corporation |
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EPM9320LI84-20 Datasheet(HTML) 36 Page - Altera Corporation |
36 / 46 page 36 Altera Corporation MAX 9000 Programmable Logic Device Family Data Sheet The parameters in this equation are shown below: MCTON = Number of macrocells with the Turbo Bit option turned on, as reported in the MAX+PLUS II Report File (.rpt) MCDEV = Number of macrocells in the device MCUSED = Number of macrocells used in the design, as reported in the MAX+PLUS II Report File fMAX = Highest clock frequency to the device togLC = Average percentage of logic cells toggling at each clock (typically 12.5%) A, B, C = Constants, shown in Table 25 This calculation provides an ICC estimate based on typical conditions with no output load, using a typical pattern of a 16-bit, loadable, enabled up/down counter in each LAB. Actual ICC values should be verified during operation, because the measurement is sensitive to the actual pattern in the device and the environmental operating conditions. Figure 15 shows typical supply current versus frequency for MAX 9000 devices. Table 25. MAX 9000 ICC Equation Constants Device Constant A Constant B Constant C EPM9320 0.81 0.33 0.056 EPM9320A 0.56 0.31 0.024 EPM9400 0.60 0.33 0.053 EPM9480 0.68 0.29 0.064 EPM9560 0.68 0.26 0.052 EPM9560A 0.56 0.31 0.024 |
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