Invention Grant
- Patent Title: Non-volatile memory device with variable readout reference
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Application No.: US15516527Application Date: 2015-09-29
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Publication No.: US10395730B2Publication Date: 2019-08-27
- Inventor: Yotaro Mori , Makoto Kitagawa
- Applicant: Sony Semiconductor Solutions Corporation
- Applicant Address: JP Kanagawa
- Assignee: Sony Semiconductor Solutions Corporation
- Current Assignee: Sony Semiconductor Solutions Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Michael Best & Friedrich LLP
- Priority: JP2014-220979 20141030
- International Application: PCT/JP2015/077436 WO 20150929
- International Announcement: WO2016/067805 WO 20160506
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C13/00 ; G11C5/14

Abstract:
A non-volatile memory device of the present disclosure includes: a plurality of bit lines; a plurality of word lines; a memory cell array having a plurality of memory cells each including a non-volatile storage element and being disposed at crossing sections of the bit lines and the word lines; a reference voltage generator circuit that generates a readout reference voltage serving as a reference for discrimination of data values stored on the memory cells; a readout circuit that reads the data values stored on the memory cells by detecting values of readout voltages from the memory cells relative to the readout reference voltage in a state where a predetermined current-limited readout current is applied to the bit lines; and an address compensation circuit that changes the readout reference voltage in accordance with a placement position of a memory cell to be read of the memory cells in the readout circuit.
Public/Granted literature
- US20180025778A1 NON-VOLATILE MEMORY DEVICE Public/Granted day:2018-01-25
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