LSI design flow and EDA

Which correctly describes a feature of FPGAs?

  1. AThe circuit is fixed at manufacture and cannot be changed
  2. BThey are devices dedicated to analog circuits
  3. CUsers can rewrite the configuration of the logic circuit after manufacturing
Show answer and explanation

Answer: C. Users can rewrite the configuration of the logic circuit after manufacturing

An FPGA is a device whose logic blocks and wiring connections can be rewritten with configuration data after manufacturing. Unlike custom LSIs (ASICs), it requires no manufacturing time or mask costs, so it is used for prototypes, low-volume production and equipment that needs function updates. For the same circuit, however, an ASIC is faster and uses less power.

Practice this topic Back to topic

More LSI design flow and EDA questions

  1. What is the main purpose of clock tree synthesis (CTS) in the place-and-route stage?
  2. What does 'IP (IP core)' mean in LSI design?
  3. In static timing analysis, which timing violation occurs when a signal changes too soon after the clock edge, so a flip-flop cannot correctly hold the previous data?
  4. What is the set of design data, including design rules, device models and cell libraries, that a foundry provides to designers called?
  5. Which is the representative circuit simulator that calculates voltages and currents of transistor-level circuits in detail using device models?