Devices, circuits and methods for dual voltage generation using single charge pump

A semiconductor memory device comprising:

• a wordline driver circuit;
• at least one of a bit line sense amplifier block control circuit and a substrate of a memory cell transistor;
• an oscillator to generate an oscillating signal;
• a charge pump that includes a pumping capacitor to generate, responsive to the oscillating signal, a pumping voltage at a pumping node;
• a first switching circuit coupled to the pumping node to output from the pumping voltage a first voltage to the wordline driver circuit;
• and
• a second switching circuit coupled to the pumping node to output from the pumping voltage a second voltage to the one of the bit line sense amplifier block control circuit and the substrate of the memory cell transistor.

A semiconductor device comprising:

• means for generating an oscillating signal;
• means for generating a pumping voltage responsive to the oscillating signal;
• means for first-switching the pumping voltage to generate a first voltage for a first component;
• and
• means for second-switching the pumping voltage to generate a second voltage for a second component concurrently with generating the first voltage.

A method comprising:

• generating an oscillating signal;
• generating a pumping voltage responsive to the oscillating signal;
• first-switching the pumping voltage to generate a first voltage for a first component;
• and
• second-switching the pumping voltage to generate a second voltage for a second component concurrently with generating the first voltage.