LFEC10E-3F256C Lattice Semiconductor Corp., LFEC10E-3F256C Datasheet - Page 198

• Manufacturer Part Number: LFEC10E-3F256C
• Description: Latticeecp/ec Family of Fpga Devices Has Been Optimized to Deliver Mainstream Fpga Features at Low Cost.for Maximum Performance And Value, The Latticeecp (EConomy Plus) Fpga Concept Combines an Efficient Fpgafabric With High-speed Dedicated Functions
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Where,
The total DC power consumption for all the resources as per the design data is the Quiescent Power in the Power
Calculator.
The AC power, on the other hand, is governed by the equation
Total AC Power (Resource)
Where,
Based on the above equations, if we wish to calculate the power consumption of the Slice portion, it will be as fol-
lows:
Total DC Power (Slice)
Total AC Power (Slice)
Starting the Power Calculator
The user can launch the Power Calculator by one of the two methods. The first method is by clicking the Power Cal-
culator button in the toolbar as shown in Figure 12-1.
N
N
= K
N
N
K
f
AF
= Total DC Power of Used Portion + Total DC Power of Unused Portion
= [DC Leakage per Slice when Used * N
= K
MAX
RESOURCE
TOTAL RESOURCE
RESOURCE
TOTAL RESOURCE
RESOURCE
+ [DC Leakage per Slice when Unused * (N
RESOURCE
RESOURCE
SLICE
* f
MAX
* f
* AF
MAX
is the total number of resources in a device
is the number of resources used in the design
SLICE
* AF
is the total number of Resources in a device,
is the number of Resources used in the design,
is the Power constant for the Resource. The units of this factor are mW/MHz
is the max frequency at which the Resource is running. Frequency is measured in
terms of MHz
is the activity factor for the Resource group. Activity Factor is in terms of the per-
centage (%) of switching frequency.
RESOURCE
* N
SLICE
* N
RESOURCE
SLICE
]
TOTAL SLICE
12-2
Estimating Power Using the Power Calculator
- N
SLICE
)]
for LatticeECP/EC Devices