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How to place a 6.29 MHz ceramic resonator?

Last Updated:11/14/2017

Question:

I placed a 6.29MHz ceramic resonator, but my system seems to be running at 4MHz.

Answer:

Perhaps the clock selected with the debugger has been set to the target (external).
If the clock is internal, the clock originally mounted in the emulator gets used.
In addition, a setting of 2/3 division can be selected for the main system clock with the IECL1 register setting, check how this is set.
If there is the possibility that the 4-MHz frequency is being used, this setting is possibly the cause.
Suitable Products
78K Family