[108] RAM: RAM content cannot be trusted upon waking up from System ON Idle or System OFF mode

This anomaly applies to IC Rev. Engineering B, build codes QFAA-BA0, CHAA-AA0.


RAM not correctly retained.


System ON Idle mode or System OFF is used with parts or all RAM retained.


RAM not correctly retained.


Apply the following code after any reset:
*(volatile uint32_t *)0x40000EE4 = (*(volatile uint32_t *)0x10000258 & 0x0000004F);
This workaround is implemented in MDK version 8.9.0 and newer version. This workaround increases the I_RAM current per 4 KB section from 20nA to 30nA.

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