Mikroe TDC Click recognizes events and provides a digital representation of the time occurred. The board features the Texas Instruments TDC7200 time-to-digital converter (TDC). The TDC performs the function of a stopwatch and measures the elapsed time-of-flight (TOF) between a START pulse and up to five STOP pulses. The ability to measure from START to multiple STOPs gives the flexibility to select which STOP pulse yields the best echo performance.