NONVOLATILE SEMICONDUCTOR STORAGE APPARATUS

摘要

A nonvolatile semiconductor storage apparatus is provided. To a data node and a reference node, a first transistor and a second transistor are respectively connected. In a data state determining operation, in the case where voltage is applied to the data node and reference node, the first and second transistors operate as precharge transistors in a first operation mode, and operate as mirror transistors in a second operation mode. The first and second operation modes are switched.

主权项

1. A nonvolatile semiconductor storage apparatus comprising:
a memory cell that includes at least a first terminal and a second terminal; a reference cell that includes at least a third terminal and a fourth terminal; a readout circuit connected to the first terminal and the third terminal; a first transistor connected to the first terminal; and a second transistor connected to the third terminal, wherein a gate of the first transistor and a gate of the second transistor are connected in common, the nonvolatile semiconductor storage apparatus further comprising a switch for electrically short-circuiting and disconnecting between the gates of the first and second transistors and the third terminal or the fourth terminal.