Managing power supply in semiconductor devices

A system, comprising:

• a memory device comprising a memory array having an array of memory cells coupled to a plurality of word lines;
• and
• a controller coupled to the memory device and configured to send a command to the memory device, the command indicating the memory device to perform an operation,
• wherein the memory device further comprises:
• a voltage generator comprising a voltage pump having an input, an output, and a series of pump stages coupled between the input and the output;
• a pump switch circuit configured to be coupled to the voltage pump;
• and
• an interface comprising a voltage pin coupled to the pump switch circuit and configured to receive an input voltage,
• wherein the pump switch circuit is configured to provide the input voltage received at the voltage pin to a corresponding node in the voltage pump to select a corresponding number of pump stages of the series of pump stages to output a target voltage at the output of the voltage pump, and
• wherein the memory device is configured to perform the operation based on the target voltage outputted at the output of the voltage pump.

A method performed by a semiconductor device, the method comprising:

• receiving a command to perform an operation in the semiconductor device;
• receiving a signal indicating a target voltage associated with the operation;
• detecting a value of an input voltage at a voltage pin of the semiconductor device, wherein the semiconductor device comprises a pump switch circuit coupled to the voltage pin;
• controlling the pump switch circuit to be coupled to a corresponding node in a voltage pump of the semiconductor device based on the value of the input voltage and the signal indicating the target voltage, wherein the voltage pump comprises an input, an output, and a series of pump stages coupled between the input and the output;
• generating the target voltage at the output of the voltage pump using a corresponding number of pump stages coupled between the corresponding node and the output;
• and
• performing the operation based on the target voltage.