Patent Number: 6,480,427

Title: Negative-potential detecting circuit having an enhanced sensitivity of detecting negative potentials

Abstract: A negative-potential detecting circuit includes first and second resistance elements connected in series between an output end of a constant-current source for outputting a constant current and a negative-potential node for generating a negative potential, a third resistance element connected between a connection node between the first and second resistance elements and a fixed-potential node, and a comparator for comparing a potential of a connection node between the constant-current source and the first resistance element and a reference potential with each other. The comparator detects a level of a negative potential by comparing the potential of the connection node and the reference potential.

Inventors: Kuriyama; Masao (Fujisawa, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: G11C 16/06 (20060101); G11C 16/30 (20060101); G11C 007/00 ()

Expiration Date: 11/12/2019