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TMS320F280039C: Error -2131@0x0

Part Number: TMS320F280039C

请问,突然进不了debug和烧写程序,报了error2131,烧写器和pc环境都没问题,电路板也没损坏,换了个芯片就好了,是那个芯片烧了吗?还是说锁住了?有可能是什么原因导致的,原来的芯片还有救吗?以后应该如何避免呢?