The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Feb. 01, 2017
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Stmicroelectronics International N.v., Amsterdam, NL;
Marco Pasotti, Travaco' Siccomario, IT;
Marcella Carissimi, Treviolo, IT;
Rajat Kulshrestha, Noida, IN;
Chantal Auricchio, Cassina de' Pecchi, IT;
STMICROELECTRONICS INTERNATIONAL N.V., Amsterdam, NL;
STMICROELECTRONICS S.R.L., Agrate Brianza, IT;
Abstract
A memory device includes an array of phase-change memory (PCM) cells and complementary PCM cells. A column decoder is coupled to the array of PCM cells and complementary PCM cells, and a sense amplifier is coupled to the column decoder. The sense amplifier includes a current integrator configured to receive first and second currents of a given PCM cell and complementary PCM cell, respectively. A current-to-voltage converter is coupled to the current integrator and is configured to receive the first and second currents, and to provide first and second voltages of the given PCM cell and complementary PCM cell to first and second nodes, respectively. A logic circuit is coupled to the first and second nodes and is configured to disable the column decoder and to discharge the bitline and complementary bitline voltages in response to the first and second voltages.