ColdFire/68K Microcontrollers and ProcessorsのトピックRe: Power calculation for MCF5483 https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Power-calculation-for-MCF5483/m-p/138840#M2108 <HTML><HEAD></HEAD><BODY><DIV>Hi Ebda,</DIV><DIV>Don't have numbers for MCF5483 but some for the sister part MCF5475:</DIV><DIV>The following numbers where measured on a MCF5475 running at 66/132/264 MHz at room temperature.</DIV><DIV>&nbsp;</DIV><DIV>Instructions in Flash (Flexbus, 3.3V IO)<BR />Data in external SRAM (Flexbus, 3.3V IO)<BR />SDRAM drive turned on to 8mA drive strength</DIV><DIV>Caches on</DIV><DIV>DMA moving data from external SRAM to FEC FIFO<BR />FEC continually transmitting data at 10Mbps / half-duplex<BR />CPU alternates reads of SDRAM and internal registers<BR />---------------------------------<BR />1.48V Core&nbsp;&nbsp;&nbsp;&nbsp; 557 mA&nbsp;&nbsp;&nbsp; .824W<BR />2.50V DDR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 227 mA&nbsp;&nbsp;&nbsp; .568W<BR />3.27V uP I/O&nbsp;&nbsp;&nbsp; 31 mA&nbsp;&nbsp;&nbsp; .101W<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ---------<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.493W</DIV><DIV>&nbsp;</DIV><DIV>&nbsp;</DIV><DIV>Note these are only the power measurements for the voltage rails into the processor.&nbsp; The external memory power budgets are not accounted for here.</DIV><DIV>I can tell you that the non-encryption parts require ~135mA less on the 1.5V power supply; This saves about .2 Watts.<BR /></DIV><DIV>Regards, DavidS</DIV></BODY></HTML> Sat, 17 Jun 2006 00:50:19 GMT DavidS 2006-06-17T00:50:19Z Power calculation for MCF5483 https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Power-calculation-for-MCF5483/m-p/138839#M2107 <HTML><HEAD></HEAD><BODY><DIV>Hi,</DIV><DIV>&nbsp;</DIV><DIV>I need to calculate the power consumption of my MCF5483 processor. Please tell me if any document which describes power calculation details/procedure.</DIV><DIV>&nbsp;</DIV><DIV>Or give any power calculation which any body did before. that helps me alot.</DIV><DIV>&nbsp;</DIV><DIV>Thanks,</DIV><DIV>Ebda</DIV></BODY></HTML> Thu, 08 Jun 2006 14:50:33 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Power-calculation-for-MCF5483/m-p/138839#M2107 Ebda 2006-06-08T14:50:33Z Re: Power calculation for MCF5483 https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Power-calculation-for-MCF5483/m-p/138840#M2108 <HTML><HEAD></HEAD><BODY><DIV>Hi Ebda,</DIV><DIV>Don't have numbers for MCF5483 but some for the sister part MCF5475:</DIV><DIV>The following numbers where measured on a MCF5475 running at 66/132/264 MHz at room temperature.</DIV><DIV>&nbsp;</DIV><DIV>Instructions in Flash (Flexbus, 3.3V IO)<BR />Data in external SRAM (Flexbus, 3.3V IO)<BR />SDRAM drive turned on to 8mA drive strength</DIV><DIV>Caches on</DIV><DIV>DMA moving data from external SRAM to FEC FIFO<BR />FEC continually transmitting data at 10Mbps / half-duplex<BR />CPU alternates reads of SDRAM and internal registers<BR />---------------------------------<BR />1.48V Core&nbsp;&nbsp;&nbsp;&nbsp; 557 mA&nbsp;&nbsp;&nbsp; .824W<BR />2.50V DDR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 227 mA&nbsp;&nbsp;&nbsp; .568W<BR />3.27V uP I/O&nbsp;&nbsp;&nbsp; 31 mA&nbsp;&nbsp;&nbsp; .101W<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ---------<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.493W</DIV><DIV>&nbsp;</DIV><DIV>&nbsp;</DIV><DIV>Note these are only the power measurements for the voltage rails into the processor.&nbsp; The external memory power budgets are not accounted for here.</DIV><DIV>I can tell you that the non-encryption parts require ~135mA less on the 1.5V power supply; This saves about .2 Watts.<BR /></DIV><DIV>Regards, DavidS</DIV></BODY></HTML> Sat, 17 Jun 2006 00:50:19 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Power-calculation-for-MCF5483/m-p/138840#M2108 DavidS 2006-06-17T00:50:19Z