S32KのトピックRe: s32k144 rtc problem on vlps mode

s32k144 rtc problem on vlps mode

建宽高 — Mon, 02 Jul 2018 06:19:30 GMT

hi,I want to know whether the internal real-time clock can run under VLPS mode?

First, I checked the s32-rm (rev4) data

1. on P1367

Power, clocking, and reset

The RTC is an always powered-block that remains active in all low power modes

That is, it works in all low power modes

2. on P955

In powermanage, RTC in VLPS mode is off state,off Module and clock sources are disabled, and off represents the block clock source prohibition

Therefore, I don't know whether RTC can work in VLPS mode, so I have done relevant experiments to prove whether VLPS continue to time from run-> lvps-> RUN ,

Whether to continue timing in mode on vlps

I have shown that both external crystal oscillations and internal real-time clocks within the internal clock source are valid

Re: s32k144 rtc problem on vlps mode

danielmartynek — Mon, 02 Jul 2018 12:33:21 GMT

Hi,

Please use S32K1xx_RM_r.7.

The table has been updated.

Regards,

Daniel

Re: s32k144 rtc problem on vlps mode

建宽高 — Tue, 03 Jul 2018 01:16:43 GMT

thanks for your reply,I wonder what that means about Async operation ,

Re: s32k144 rtc problem on vlps mode

danielmartynek — Tue, 03 Jul 2018 13:45:56 GMT

Hi,

Please refer to Table 7-8, S32K1xx_RM_r7.

All the other clock sources (LPOCLKS[RTCCLKSEL]) are gated off in VLPS.

Regards,

Daniel

Re: s32k144 rtc problem on vlps mode

建宽高 — Wed, 04 Jul 2018 02:01:11 GMT

thanks for your reply