Invention Grant
- Patent Title: Half block management for flash storage devices
- Patent Title (中): 闪存存储设备的半块管理
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Application No.: US14018149Application Date: 2013-09-04
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Publication No.: US09558108B2Publication Date: 2017-01-31
- Inventor: Yu-Ming Chang , Yung-Chun Li , Hsing-Chen Lu , Hsiang-Pang Li , Cheng-Yuan Wang , Yuan-Hao Chang , Tei-Wei Kuo
- Applicant: MACRONIX INTERNATIONAL CO., LTD.
- Applicant Address: TW Hsinchu
- Assignee: MACRONIX INTERNATIONAL CO., LTD.
- Current Assignee: MACRONIX INTERNATIONAL CO., LTD.
- Current Assignee Address: TW Hsinchu
- Agency: Haynes Beffel & Wolfeld LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F12/02 ; G11C16/34 ; G11C16/04 ; G11C16/16

Abstract:
A method for managing block erase operations is provided for an array of memory cells including erasable blocks of memory cells in the array. The method comprises maintaining status data for a plurality of sub-blocks of the erasable blocks of the array. The status data indicate whether the sub-blocks are currently accessible and whether the sub-blocks are invalid. The method comprises, in response to a request to erase a selected sub-block of a particular erasable block, issuing an erase command to erase the particular block if the other sub-blocks of the particular erasable block are invalid, else updating the status data to indicate that the selected sub-block is invalid.
Public/Granted literature
- US20140310447A1 HALF BLOCK MANAGEMENT FOR FLASH STORAGE DEVICES Public/Granted day:2014-10-16
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