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C2000 launchpad 如何仅仅给DSP供电

最近做一个电源用到了C2000 launchpad,但是考虑到仿真器本身电能消耗不小,如果不与电脑相连的话想仅仅给CPU供电以节省电能。
现在考虑的是烧好程序后仅仅给CPU引脚VCC等供电。但是我拔掉launchpad 上的J1、J2、J3,给板子的GND和3V3位置用稳压源供电,板子上D1点亮了,但是之前可以运行的程序不运行。
大家有没有这样实现过过,能否详细介绍一下!

谢谢指导!