Invention Grant
- Patent Title: Memory apparatus and method of operation using plane dependent ramp rate and timing control for program operation
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Application No.: US17149136Application Date: 2021-01-14
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Publication No.: US11386968B1Publication Date: 2022-07-12
- Inventor: Yu-Chung Lien , Huai-yuan Tseng , Tomer Eliash
- Applicant: SanDisk Technologies LLC
- Applicant Address: US TX Addison
- Assignee: SanDisk Technologies LLC
- Current Assignee: SanDisk Technologies LLC
- Current Assignee Address: US TX Addison
- Agency: Dickinson Wright PLLC
- Agent Steven C. Hurles
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/10 ; G11C16/34 ; G11C16/12 ; G11C16/06 ; G11C16/08 ; G11C16/30 ; G11C16/26 ; G11C16/24

Abstract:
A memory apparatus and method of operation is provided. The apparatus includes memory cells connected to word lines and bit lines and arranged in a plurality of planes. The apparatus also includes a control circuit coupled to the word lines and the bit lines and configured to determine whether a program operation of the memory cells involves all of the plurality of planes. In response to the program operation of the memory cells not involving all of the plurality of planes, the control circuit adjusts at least one of a bit line ramp rate of a bit line voltage applied to the bit lines and a word line ramp rate of at least one word line voltage applied to the word lines during the program operation based on a quantity of the plurality of planes associated with the memory cells being program-verified in the program operation.
Public/Granted literature
Information query