[15] POWER: RAM[x].POWERSET/CLR read as zero

This anomaly applies to IC Rev. Engineering A, build codes QFAA-AA0, QFAA-AC0, CGAA-AA0.

Symptoms

RAM[x].POWERSET and RAM[x].POWERCLR read as zero, even though the RAM is on.

Conditions

Always

Consequences

Not possible to read the RAM state using RAM[x].POWERSET and RAM[x].POWERCLR registers. Write works as it should.

Workaround

Use RAM[x].POWER to read the state of the RAM.


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