Altera PowerPlay Early Power Estimator for Altera CPLDs - Manual (Page 19)

Chapter 2: PowerPlay Early Power Estimator Worksheets 2–9
Power Estimation Using the PowerPlay Early Power Estimator
December 2010 Altera Corporation PowerPlay Early Power Estimator for Altera CPLDs User Guide
User Flash Memory Section
When your design uses the UFM, the PowerPlay EPE spreadsheet considers the time
spent during read operations into the power estimation.
Figure 2–8 shows the UFM
section in the PowerPlay EPE spreadsheet.
Table 2–8 lists the parameters in the UFM section of the PowerPlay EPE spreadsheet.
I/O Worksheet
MAX II and MAX V devices feature programmable I/O pins that support a wide
range of industry I/O standards for increased design flexibility. The I/O section in the
PowerPlay EPE spreadsheet allows you to estimate the I/O pin power consumption
based on the pin’s I/O standards.
The total thermal power is the sum of the thermal power consumed by the device
from each power rail, as shown in
Equation 2–2 :
Figure 2–8. UFM Section in PowerPlay EPE Spreadsheet
Table 2–8. UFM Section Information
Column Heading Description
UFM Module Specify a name for the UFM module in this column. This is an optional value.
Read %
Enter the percentage of time the UFM spends in Read mode. It takes 16 clock cycles to shift the
serial data out after an internal UFM read so the read operation occurs less than
1/17 (or about 6%) of the time. The clock in this calculation is the UFM block’s DRCLK signal.
Total Power (mW)
Total power dissipation due to reading from the UFM block (mW). Programming and erasing
can only be performed for a limited number of times over the life of the device so they do not
contribute to average power.
User Comments Enter any comments. This is an optional value.
Equation 2–2.
Thermal Power = Thermal P INT + Thermal P IO