6083 - What is the difference of PFU and Logic Cells?
6083 - What is the difference of PFU and Logic Cells?
A PFU is not the same as a Logic Cell.
Logic Cells are an arbitrary count that is a composite number of LUT’s, Registers, RAM, and DSPs.
Whereas, PFUs are actual counts of LUTs and Registers.
Definition: We will consider two cases: (1) the control (reset, set) and clock signals are active upon device power-up and (2) the control and clock signals are in-active upon power-up. Solution: In the first case, the register's output will be ...
The answer is no. Clock trees are placed by quadrants, but LUTs are placed according to available space. In the ECP2M devices, the SERDES alone can take up to 1/4 of a quadrant. Thus, there is less logic resources physically present in that quadrant ...
Yes, the primary clock tree to most of the IOLs in the LatticeECP3 is balanced hence you see the delays are almost the same. The only difference you will see is in primary clock tree delays to SERDES pins or IOL pins at the EBR row ends. The primary ...
FPGA’s including Lattice FPGA and other VLSI circuits are connected using thin-film metallic conductors and they are subject to increasingly high current densities. Under these conditions, electromigration can lead to the electrical failure of ...
Description: This is usually the result of setting the Reset level in the PINS window to Set Low / Don't Care; combined with the logic of the Supervisory Equation setting the output High. If the logic High condition passes through more than a single ...