Invention Grant
- Patent Title: Determining optimal reference voltages for progressive reads in flash memory systems
- Patent Title (中): 确定闪存系统中逐行读取的最佳参考电压
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Application No.: US13167896Application Date: 2011-06-24
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Publication No.: US08531888B2Publication Date: 2013-09-10
- Inventor: Shashi Kiran Chilappagari , Xueshi Yang
- Applicant: Shashi Kiran Chilappagari , Xueshi Yang
- Applicant Address: BB St. Michael
- Assignee: Marvell World Trade Ltd.
- Current Assignee: Marvell World Trade Ltd.
- Current Assignee Address: BB St. Michael
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
A system including a reference voltage module to select a first reference voltage between a first threshold voltage corresponding to a first state of a memory cell and a second threshold voltage corresponding to a second state of the memory cell, a second reference voltage less than the first reference voltage, and a third reference voltage greater than the first reference voltage. The system includes a read module to perform a first read operation to determine a state of the memory cell based on the first reference voltage, and in response to a first failure to decode data read from the memory cell in the first read operation, perform a second read operation to determine the state based on the second reference voltage and a third read operation to determine the state based on the third reference voltage.
Public/Granted literature
- US20120008386A1 Determining Optimal Reference Voltages For Progressive Reads In Flash Memory Systems Public/Granted day:2012-01-12
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