US 11,029,889 B1 · Soft bit read mode selection for non-volatile memory

Abstract

Apparatuses, systems, and methods are presented for reading data. A controller may be configured to select a read mode from a plurality of read modes for reading data from a region of a non-volatile memory array. The plurality of read modes may include at least a time-based soft bit read mode. The controller may be configured to apply a set of bias conditions to cells of a region so that bit line currents associated with the cells of the region affect voltages at capacitors associated with the cells of the region. The controller may be configured to, in response to selecting a time-based soft bit read mode, read hard bits and soft bits for a region by sensing capacitor voltages resulting from an applied set of bias conditions, at multiple integration times.

Claims20

Dependent claims

An apparatus, comprising:

an array of non-volatile memory cells;
and
a controller configured to:
select a read mode from a plurality of read modes for reading data from a region of the array, the plurality of read modes comprising at least a time-based soft bit read mode;
apply a set of bias conditions to cells of the region such that bit line currents associated with the cells of the region affect voltages at capacitors associated with the cells of the region;
and
in response to selecting the time-based soft bit read mode, read hard bits and soft bits for the region by sensing the capacitor voltages resulting from the applied set of bias conditions, at multiple integration times.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/723,192Filed 20 Dec 2019

Published

US 2021/0191651 A124 Jun 2021

Granted

8 Jun 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G06F 3/0659
Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices: command handling…
G06F 3/0604
Specifically adapted to achieve a particular effect: improving or facilitating administration, e.g. storage management
G06F 3/0634
Configuration or reconfiguration of storage systems: by changing the state or mode of one or more devices
G06F 3/0679
Single storage device: non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Soft bit read mode selection for non-volatile memory

Life of this patent

Soft bit read mode selection for non-volatile memory

Life of this patent

Abstract

Claims20