topic S32K146 in S32K

S32K146

chuanlin — Wed, 24 Jan 2024 02:20:23 GMT

Hello, can the S32K146 EB tresos LPTMR module be configured to use RTC_ CLK

Re: S32K146

Julián_AragónM — Wed, 24 Jan 2024 20:15:44 GMT

Yes, according to Table 27-8. Peripheral clock summary (continued) from the S32K1xRM, RTC_CLK is available as output.

Keep in mind RTC_CLK is the output from the multiplexer that uses SIM_LPOCLKS[RTCCLKSEL] for source selection.

Best regards,
Julián

Re: S32K146

chuanlin — Thu, 25 Jan 2024 00:59:02 GMT

For SIM_ LPOCLKS [RTCCLKSEL], does RTCCLKSEL need to select 11

Re: S32K146

chuanlin — Thu, 25 Jan 2024 01:22:02 GMT

Hello, the MCU module in the EB configuration of K146 cannot select RTC_ CLK, this means that LPTMR still cannot use RTC_ CLK clock reference point

Re: S32K146

Julián_AragónM — Fri, 26 Jan 2024 16:00:10 GMT

Hi @chuanlin,

It seems the RTC clock is not supported in the EB Tresos configuration view.

The "lptmr_periodic_interrupt_s32k116" example from the S32K1xx SDK RTM example projects inside S32 Design Studio does support the RTC clock from the Config Tools, as seen in this community post:

S32K146 LPTMR - NXP Community

I apologize for the inconveniences this may cause.

Best regards,
Julián