Difficulty: Easy
Correct Answer: Incorrect
Explanation:
Introduction / Context:
Different FPGA families store configuration in different ways. Knowing which technology dominates affects boot process, non-volatility, and security choices in a design.
Given Data / Assumptions:
Concept / Approach:
Historically and presently, most high-volume FPGA families from major vendors use SRAM configuration (volatile). They load a bitstream from external flash or other sources at power-up. Flash-based FPGAs (with on-chip non-volatile storage) exist from some vendors, and antifuse FPGAs target niche applications (e.g., rad-hard). However, SRAM remains the dominant configuration technology in the broader market.
Step-by-Step Solution:
List technologies: SRAM, flash, antifuse.Compare market share and ubiquity across vendors and product lines.Conclude that SRAM is most common; therefore the statement “flash is most common” is incorrect.
Verification / Alternative check:
Review vendor portfolios: most flagship FPGAs (spanning multiple process nodes) rely on SRAM configuration with external non-volatile memory for boot.
Why Other Options Are Wrong:
“Correct” contradicts observed market prevalence. The space-grade or “before power-on” qualifiers are unrelated to overall commonality.
Common Pitfalls:
Confusing external flash boot for SRAM configuration as “flash FPGA”; overlooking that SRAM FPGAs are volatile even if they boot from flash.
Final Answer:
Incorrect
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