Regulators regulating charge pump and memory circuits thereof

A memory circuit comprising:

• at least one memory cell for storing a charge representative of a datum, the memory cell being coupled with a word line and a bit line;
• a charge pump coupled with the word line;
• and
• a regulator for regulating the charge pump, the regulator comprising a comparator having a first input end capable of receiving a first voltage and a second input end capable of receiving a second voltage for determining enabling or disabling the charge pump, wherein the first voltage is associated with an output voltage of the charge pump and the second voltage is associated with an internal power voltage and a reference voltage Vref.