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MSP430FR2110IPW16功耗问题及替代系列芯片型号

Other Parts Discussed in Thread: MSP430FR2110

MSP430FR2110IPW16使用内部RTC时钟时钟源,功耗17uA,进不了低功耗模式。外接32.768kHz晶振,功耗才降下来到1uA。产品不能外接晶振,计划换芯片,请问MSP430FR2110IPW16是否有其他系列低功耗芯片可替代,最好封装一样,请推荐。