Multi-level memory apparatus and data sensing method thereof

摘要

A multi-level memory apparatus includes two or more current paths configured to pass currents having different levels, a memory cell selectively coupled to the two or more current paths, and a cell current copy unit configured to copy a cell current flowing through the memory cell.

主权项

1. A multi-level memory apparatus comprising:
two or more current paths configured to pass currents having different levels; a memory cell selectively coupled to the two or more current paths; a cell current copy unit configured to copy a cell current flowing through the memory cell and output a copied cell current; a comparison unit configured to compare the copied cell current flowing through the cell current copy unit with a copied comparison current; a data output unit configured to convert an output signal of the comparison unit and output a comparison signal; a comparison current output unit configured to output a comparison current using the comparison signal outputted from the data output unit; and a comparison current copy unit configured to copy the comparison current and output the copied comparison current.