LPC1549, Errata and RTC

[carstengroen]

I have a design where the LPC1549 is a possible candidate. In the errata sheet for the part, the RTC seems to be more or less non-functional, at least when it comes to the COUNT register (1Hz):

Is it safe to use the high-resolution/wake-up timer in this part (and not relying on the 1Hz COUNT function) ?

Are there not any plan to fix the RTC in the LPC15xx series ?

[soledad]

Hi,

The report Errata, it is only on the Digital Counter of the RTC, the time base oscillator it is stable. Unfortunately there is not plan to fix it.

Have a great day,
Sol

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[carstengroen]

Thanks Sol,

so you confirm that the high-resolution/wake-up timer in the RTC block is NOT affected by this errata ?

(but only the COUNT register is affected)

[soledad · Accepted solution]

Yes,  The issue seems to be related to some glitch when the internal 16-bit ripple count wraps from 0x7FFF to 0x8000 and from 0xFFFF to 0x0000.

Have a great day,
Sol

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
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