LFXP3E-5TN100C Lattice, LFXP3E-5TN100C Datasheet - Page 298

• Manufacturer Part Number: LFXP3E-5TN100C
• Description: IC FPGA 3.1KLUTS 62I/O 100-TQFP
• Manufacturer: Lattice

Specifications of LFXP3E-5TN100C

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Power Estimation and Management
Lattice Semiconductor
for LatticeECP/EC and LatticeXP Devices
Appendix A. Power Calculator Project Example
This example assumes that you have post Place and Route NCD netlist in the design folder. Click on File > New or
click on the New Project button. The New Project Window will open as shown below.
The various fields are filled in automatically with the project name the same as the ispLEVER project name and the
directory also the same as the design folder. If the Post Place and Route NCD file is available, the NCD File field is
also automatically filled. Users can also browse to the particular location to change the folder where they wish to
create the Power Calculator project. Users can also browse to the NCD file in case it is not available at the root
design folder.
Click Finish. This opens the Main Power Calculator project window, as shown below.
Note that the project window above imports all the resource utilization information from the NCD file. It does not,
however, include information such as the frequency at which the design is operating or the activity factors at which
the various components are toggling. This information is to be filled in by the user.
The top portion of the Power Calculator window shows information such as the device family and device being con-
sidered for power calculation, the V
which is by default the nominal V
for the device, and operating conditions.
CC,
CC
Operating conditions users can enter include the ambient temperature, and heat sink available. Users can also
select the air flow values.
There is a grayed box for junction temperature that shows Tj based on the given conditions and the calculated
power.
If we assume the design is running at 100 MHz with a 10% Activity Factor, the final Power Calculator will be as
shown below.
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