System with Memory Device Replica for Stable Read Operations

A memory device replica configured to mimic behavior of a memory device, the memory device replica comprising:

• a plurality of reference cells;
• a reference multiplexer coupled to the reference cells and configured to select one of the reference cells in response to a select signal and to connect the selected one of the reference cells to a reference sense amplifier;
• a resistive element connected between the junction of the reference cells and the reference multiplexer and a ground or VSS node;
• and
• the reference sense amplifier configured to generate a data latch signal.

A method of performing a read operation on a memory device, the method comprising:

• pre-charging a charge/discharge node of an input-output sense amplifier of a memory device to a VDD level;
• selecting one of memory cells of the memory device;
• connecting the selected one of the memory cells to the input-output sense amplifier;
• generating, by the input-output sense amplifier, a data output signal representing a bit stored in the selected one of the memory cells;
• latching the data output signal in response to a data latch signal;
• and
• generating the data latch signal by mimicking behavior of the memory device.