Non-volatile memory e.g. ROM, cell state detecting method, involves keeping voltage of one capacitance constant, so that current of another capacitance flows to cell arrangement and through memory cell

摘要

The method involves charging two capacitances (202, 224) of a memory cell arrangement to two predetermined voltage potentials (217, 221), respectively, where the latter potential is higher than the former potential. The capacitance (224) is coupled with the arrangement. Voltage of the capacitance (202) is kept constant, so that a current of the capacitance (224) flows to the arrangement and through a memory cell (201). An independent claim is also included for an integrated circuit comprising a matrix of memory cells.