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CC2652P7: DCOUPL与DCDC_SW输出不正确

Part Number: CC2652P7
Other Parts Discussed in Thread: UNIFLASH

根据芯片的设计手册与参考设计在自己的板子上进行了设计,上电后发现DCOUPL与DCDC_SW的输出与手册中的要求不符合,DCDC_SW只有一点几V并且会缓慢下降,DCOUPL只有0.2V左右,使用uniflash烧写代码时会出现 (Error -2131 @ 0x0) Unable to access device register如下错误。请问应该如何解决