S32K11X系列芯片低功耗配置问题

[huangmingsong]

您好，如下图，PMC模块里面寄存器的BIASEN位可以使能进一步降低芯片在VLPS的功耗，但是目前对于手册里面使能了该为所造成的影响有如下疑问：
        1.core logic更慢是指什么？cpu处理速度会变慢，会变慢多少能大概量化么？

        2.开启后对于系统时钟有限制，限制速度是多少？

        3.全性能模式下该位配置无效，这个全性能模式是指HSRUN还是RUN？还是有其他含义？

[lukaszadrapa · Accepted solution]

Hi @huangmingsong 

1. What does it mean that the core logic is slower? The processing speed of the cpu will slow down, can it be roughly quantified by how much it will slow down?

- It does not mean that setting of this bit will make the execution slower. It means that this bit can be used only when the execution is slower - in VLPS/VLPR modes.

2. There is a limit to the system clock after it is turned on, what is the limit speed?

- It must be set in VLPS/VLPR modes and cleared in other modes (RUN, HSRUN)

3. This bit configuration is invalid in full performance mode. Does this full performance mode refer to HSRUN or RUN? Or does it have other meanings?

- Yes, it refers to RUN and HSRUN.

Regards,

Lukas