MRAM reliability test data

[Smile2016]

Does anyone have more experience with MRAM magnetic field immunity testing? How resistant are these devices to external magnetic fields, particularly from strong magnets in close proximity? Any guidance on data retention test scenarios and qualification processes would be helpful, such as endurance for read/write cycles, data retention under no-power conditions , stress in extreme conditions (high/low temperatures, voltage spikes, etc.). I'm particularly looking for reference results and descriptions of test processes. this particular memory is part of a chipset where reliable data storage in industrial control systems where unexpected power interruptions can occur..

[voltsandjolts]

Probably questions for the manufacturer of the specific device. Check all available documentation first.

There are also generic documents available by a web search, e.g.
https://www.nxp.com/docs/en/application-note/AN3525.pdf

[Smile2016]

Probably questions for the manufacturer of the specific device. Check all available documentation first.
.....

Indeed, the manufacturer conducted some tests, but they weren't extensive. I'll need to repeat some of those tests using tinned steel sheet shield 0.1mm (looks effective ) around the device. I'm now creating my own test plan, knowing that my device is susceptible to magnetic fields.

[voltsandjolts]

mu-metal, with it's high permeability, is generally preferred for magnetic shielding, but tin could be adequate for your requirements.

Edit: You might also consider nvsram, to avoid any magnetic field issues.