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

This anomaly applies to IC Rev. Rev 1, build codes QFAA-B00, QFAB-B00, CIAA-B00.

It was inherited from the previous IC revision Engineering C.

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.