Patent ID: 8363488

Claim:
A method of operating a reference voltage regulator for an embedded dynamic random access memory (eDRAM) employing VSS-sensing with a reference level, said reference voltage regulator including an oscillator, a control block, a reference generator, a comparator, a pulse generator, a driver and a reference voltage output, said method comprising: the oscillator sending requests for sampling and correction to the control block between accesses of the eDRAM; the control block sending a pulse defining a time interval during which sampling and correction occurs to the pulse generator; the reference generator providing the reference level to the comparator; the comparator comparing the reference level with a sampling of a reference voltage to decide if the reference voltage requires correction; the comparator sending a correction request to the pulse generator if the reference voltage requires correction; the pulse generator generating a correction pulse for the driver according to the correction request from the comparator; and the driver adjusting the reference voltage during the correction pulse.