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The problem caused by Crystal frequency

I have a problem with Crystal, if I use 96000000hz for HSI with a RTOS(UIP kernel) in MM32F103(cortex-m3) , then I meet following problems.

1:Sometimes ,if program run into function SystemInit, it will jump into hardfault.

2:Sometimes ,if program run into function _scatter, all the data copy from FLASH to RAM is wrong!!!

3:Sometimes , the program is fun.

But if I choose 24000000hz for HSI, every thing is fun, I do not know why.

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