Invention Grant
- Patent Title: Driver circuit for phase-change memory cells and method of driving phase-change memory cells
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Application No.: US17814442Application Date: 2022-07-22
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Publication No.: US12148470B2Publication Date: 2024-11-19
- Inventor: Agatino Massimo Maccarrone , Antonino Conte , Francesco Tomaiuolo , Michelangelo Pisasale , Marco Ruta
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Slater Matsil, LLP
- Priority: IT102021000019574 20210723
- Main IPC: G11C13/00
- IPC: G11C13/00

Abstract:
In an embodiment a circuit includes a plurality of memory cells, wherein each memory cell includes a phase-change memory storage element coupled in series with a respective current-modulating transistor between a supply voltage node and a reference voltage node, the current-modulating transistors being configured to receive a drive signal at a control terminal and to inject respective programming currents into the respective phase-change memory storage element as a function of the drive signal, a driver circuit configured to produce the drive signal at a common control node, wherein the common control node is coupled to the control terminals of the current-modulating transistors, the drive signal modulating the programming currents to produce SET programming current pulses and RESET programming current pulses and at least one current generator circuit configured to inject a compensation current for the programming currents into the common control node.
Public/Granted literature
- US20230021601A1 DRIVER CIRCUIT FOR PHASE-CHANGE MEMORY CELLS AND METHOD OF DRIVING PHASE-CHANGE MEMORY CELLS Public/Granted day:2023-01-26
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