RRAM retention years?

RE: RRAM retention years?

Ressa — Mon, 15 Sep 2025 07:11:43 GMT

Yes it will restart from recent write.

RE: RRAM retention years?

Emil Lenngren — Fri, 12 Sep 2025 17:19:08 GMT

I think the question is, if you reprogram the RRAM at some point, will the retention cycle restart from zero again.

RE: RRAM retention years?

Ressa — Thu, 11 Sep 2025 11:39:26 GMT

Hi,

"y" refers to years. It refers to number of years that the data can be reliably retained without power at the mentioned temperature.

Best regards,
Ressa

RE: RRAM retention years?

Turbo J — Thu, 11 Sep 2025 07:26:27 GMT

Unit is years.

Not sure what you mean with cumulative or consecutive - its wall clock time. 10 years if the device never gets hotter than 85°C, 2 years if it ever gotten hotter than 85 but not higher than 105°C.Note that these are probably chip internal temps and not outside case temps (but I could be wrong here, not a nordic employee), but that matters little for a low power chip.