topic Re: S32K146 LPO clock source select in S32K

S32K146 LPO clock source select

ZhaozhangChen — Sat, 08 Oct 2022 08:58:41 GMT

I use the default LPO clock 128Khz in the BootLoader, but I need to use LPO clock 1Khz in the APP, but when I set LPO clock 1Khz when the BootLoader jumps to the APP, it does not take effect.The value of LPOCLKSEL register is 00b. Is there any way to set LPO to 1KHz in app.

Re: S32K146 LPO clock source select

Senlent — Sun, 09 Oct 2022 02:07:30 GMT

Hi@ZhaozhangChen

The LPOCLKS register is a write-once register, and is reset only on POR or LVD.

please refer to S32K-RM,the chapter 11.3.1.4

BR!