In-memory computing (imc) memory device and in-memory computing method

Abstract

An in-memory computing memory device includes: a plurality of computing memory cells forming a plurality of memory strings, the computing memory cells storing a plurality of weight values; a loading capacitor; and a measurement circuit. In IMC operations, a plurality of input voltages, corresponding to a plurality of input values, are input into the computing memory cells; a plurality of effective resistances of the computing memory cells are corresponding to the input voltages and the weight values; when a read voltage is applied to the plurality of computing memory cells, the computing memory cells generate a plurality of cell currents which are summed into a plurality of memory string currents for charging the loading capacitor; and based a capacitor voltage of the loading capacitor, at least one delay time and a predetermined voltage, an operation result of the input values and the weight values is determined.