Answers Database CPLD: XC9500: What is the Power consumption/dissipation of a 9500 device? Record #1480 Product Family: Hardware Product Line: 9500 Product Part: 9500 Problem Title: CPLD: XC9500: What is the Power consumption/dissipation of a 9500 device? Problem Description: Urgency: Standard General Description: What is the Power consumption/dissipation of a 9500 device? Solution 1: Operating current for an XC9500 design can be approximated for specific operating conditions using the following equation : Icc(mA)=MChp (1.7) + MClp (0.9) + MC (0.006 mA/MHz) f Where : MChp = Macrocells in high-performance mode MClp = Macrocells in low-power mode MC = Total number of macrocells used f = clock frequency in Mhz Power dissipation can be reduced in the XC9500 by configuring macrocells to standard or low-power modes of operation. Unused macrocells are turned off to minimize power dissipation. Typical Icc vs. Frequency graphs are available for the various XC9500 devices the latest Xilinx Programmable Logic Data Book. Please refer to this chapter for more information on low-power mode as well as additional information on the specific XC9500 device you are targeting. Solution 2: To obtain power, multiply Vccint by Icc for the sake of overall power, the i/o voltages are negligible with respect to the power calculation. End of Record #1480 - Last Modified: 12/09/99 13:23

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