Invention Grant
- Patent Title: Methods and devices for erasing non-volatile memory
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Application No.: US17508775Application Date: 2021-10-22
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Publication No.: US11495310B2Publication Date: 2022-11-08
- Inventor: Giovanni Matranga , Gianbattista Lo Giudice , Rosario Roberto Grasso , Alberto Jose' Di Martino
- 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
- Main IPC: G11C16/34
- IPC: G11C16/34 ; G11C16/30 ; G11C16/14

Abstract:
A method for erasing non-volatile memory including applying a first voltage pulse to a non-volatile memory cell to perform a first erase operation of the non-volatile memory cell and determining that a threshold voltage of the non-volatile memory cell is greater than a test voltage. The method further comprising updating a dedicated memory location with a value; and checking the non-volatile memory cell to determine whether the threshold voltage of the non-volatile memory cell is less than an erase-verify voltage to verify that the first erase operation has been performed successfully.
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