Patent ID: 6930922
Filing Date: 2005-08-16
Classification: G11C

Abstract:
1. A reading circuit for reading data from one memory cell of a plurality of memory cells, the reading circuit comprising: a plurality of division sensing circuits each connected to the one memory cell via a sensing line corresponding thereto among a plurality of sensing lines; and a current-voltage conversion circuit for converting a current flowing through each of the plurality of sensing lines into a sensing voltage representing a potential of each of the plurality of sensing lines, wherein: each of the plurality of division sensing circuits includes a current load circuit for supplying a current to the one memory cell via a corresponding sensing line among the plurality of sensing lines, and a sense amplifier for sensing a potential difference between the potential of the corresponding sensing line and a potential of a corresponding reference line of a plurality of reference lines, and the current load circuit included in at least one division sensing circuit of the plurality of division sensing circuits has a current supply capability which is different from the current supply capability of the current load circuit included in another division sensing circuits among the plurality of division sensing circuits.