Other NXP ProductsのトピックRe: RTC PCF2127 default time issue

RTC PCF2127 default time issue

jack-6602 — Fri, 05 Jan 2024 02:35:02 GMT

Hi,

I used RTC pcf2127 in our board. We produced 100 units, but recently found out that there are 2 RTCs with a default time of 2065 years.

As you know, there is a limitation in kernel, the system date can not more than 2038, otherwise, the system will not run properly.

My question is why the RTC default time is 2065, and what should be the RTC default time if the RTC is not set?

guoweisun — Fri, 05 Jan 2024 08:43:40 GMT

You can see below descript for the YEAR related register:

jack-6602 — Fri, 05 Jan 2024 08:47:42 GMT

It means RTC time has random value after reset. Am I right?

guoweisun — Fri, 05 Jan 2024 08:55:34 GMT

Yes I think so!