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Renesas Electronics America - Knowledgebase

How to place a 6.29 MHz ceramic resonator?

Latest Updated:12/01/2011


I have placed a 6.29MHz ceramic resonator, but the result seems to be 4MHz operation.


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.
Moreover, a setting of 2/3 division can be selected for the main system clock with the IECL1 register setting.
Also check how this is set. (If there is a possibility that the 4-MHz frequency is being used, this setting is possible the cause.)
Suitable Products
78K Family