Question

If the 8051 microcontroller is rated at 25 mhz, what is the maximum frequency that can be connected to it

Answer 1

Explanation:

Because the maximum should be infinity. You should be able to generate a delay of minutes, hours or even years with a 22mhz crystal, provided you know how to code. The theoretical minimum however, would be the time taken to excecute one instruction, which should be 12 clock cycles or 1 /(22000000/12) for a 22mhz clock.