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CC2642R: 关于芯片spi低功耗问题。

Part Number: CC2642R

1.

在cc2642的原工程simple_peripheral 中,在syscfg 中勾选Disable The Display Module(图1) 和 停止它的广播,(图2)在空闲任务中可以使cc2642进入睡眠状态,功耗平均电流为nA级别,

但在syscfg 外设中增加一个spi外设(仅在syscfg 中加一个外设,未初始化和 打开),功耗平均电流为50uA,问下怎么关闭或降低spi外设的耗电,使其在休眠期间达到nA功耗级别?