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GPIO

Other Parts Discussed in Thread: TMS320F2810

请问,对于tms320f2810,在我的系统中,cpu的上电和整个系统的上电不是同步的,有可能出现cpu未上电而某些信号已经加在cpu的GPIO管脚上的情况,我在外来信号和GPIO管脚之间串联足够大的电阻,保证流过GPIO管脚的电流不超过maxium ratings中规定的数字,是否就是安全的?