FPGA Resource Analysis
Report
Summary
| Carry Lookahead |
5 |
5 |
Flat |
| Simple |
5 |
5 |
Flat |
| Half Adder |
7 |
3 |
Hierarchical |
Detailed Analysis
Carry Lookahead
Implementation
File:
full_adder_carry_lookahead_fpga.v
Gate Breakdown: - AND: 1 - OR: 1 - XNOR: 2 - ANDNOT:
1
LUT Estimation: - Estimated LUTs:
5
Simple Implementation
File: full_adder_simple_fpga.v
Gate Breakdown: - AND: 1 - OR: 1 - XNOR: 2 - ANDNOT:
1
LUT Estimation: - Estimated LUTs:
5
Half Adder Implementation
File: full_adder_half_adder_fpga.v
Gate Breakdown: - AND: 1 - OR: 1 - XOR: 1
Module Instances: - half_adder: 2
LUT Estimation: - Estimated LUTs:
7
FPGA Implementation Notes
Xilinx 7-series
(Artix-7, Kintex-7, Virtex-7)
- LUT Type: 6-input LUTs
- LUT Configuration: Each LUT can implement any
6-input Boolean function
- Carry Chain: Dedicated carry logic for arithmetic
operations
- DSP Slices: Available for complex arithmetic (not
used in full adder)
Resource Utilization
- Logic Cells: Each LUT + associated flip-flop
- Slice: Contains 4 LUTs and 8 flip-flops
- CLB: Contains 2 slices
- LUT Delay: ~0.5ns per LUT
- Carry Chain Delay: ~0.1ns per bit
- Maximum Frequency: 500+ MHz achievable