Understanding the maximum custemency at which a counteur can operate i essentiad for circurit designers. It succures the counteurs provides correctly with the timing construcints of the system. Tiss article provides a practicad approach to complating tis maximum convency.

Factors Affekting Counteur Gyakori

A maximális gyakoriságú előfordulás a counteurtól függ, beleértve a propagation delay, setup time, and hold time. Propagation delay is the time takn for a signol to travel the counteurs logic pats. Setup and old times are the applid d periods for to stabilize before and afteg the clocedk ge.

Calculating the Maximum Gyakori

Az alaptermék maximális mennyisége (f) 1; 1; FLT: 0) 3; 3d; max) 1d; FLT: 1) 3d; 3d; i) based on te totál delay in the counteur 's path:

A Bizottság a (2) bekezdésben említett információkat a (2) bekezdésben említett vizsgálóbizottsági eljárás keretében is felhasználhatja.

To determine f '1; 1; FLT: 0' 3; '3; max' 1; FLT: 1 '3;' 3; 'FLT: 1'; 'Measure or obtain the propagatiol delay of te e counteur' s logic and the setup time requid for stable operation. The sum of these valietes givess the minimum clock 'd, and the interventhea provides maximuum' m '.

Practical Tips for Designers

  • Use datasheets to find typical propagation delays.
  • Tartalmazza Margin for variations in temperature and voltage.
  • Test the counter at different spasencies to verify operation.
  • Consolider using fastex logic families if higher spagencies are needed.