We had a problem with 1sec RTC interrupt, it get lost after about every 14 interrupts, we worked on interrupts priority and other thing that get in mind but problem remained, after searching in Errata sheets we find out that it is a silicon bug in XMC4500:
RTC_CM.001RTC event might get lost
RTC interrupt may get cleared in the RTC module before propagated to the
CPU interrupt controller.
Single-shot RTC alarm may be missed. Periodic alarm events may be missed
at the rate of once in 15 seconds.
XMC4500_AB_Errata_Sheet_v1_3, page 53
We want to know if there is a version of XMC4500 available that dose not have this problem? we are using AB version. I've looked up in AA and AC errata sheets, they also have this bug.
Or is there any other way to make an accurate one second interrupt based on RTC that dose not get lost?
