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28034核心板问题



自己焊了一块28034(80引脚)的核心板,数字3.3v和数字地之间有短路,上电时发现电源指示灯没亮,赶紧拔下电源,不知DSP芯片会不会烧坏。

然后用万用表测了一下数字3.3v和数字地之间的电阻,200欧左右;再上电,电源指示灯亮,下电,3.3v和地之间的电阻值是50欧左右,然后慢慢

增加到200欧左右。

我估计芯片是烧坏了。