Intel Corporation

Sk Hynix Nand Product Solutions Corp.

Xin Guo

Yogesh B Wakchaure

David J Pelster

Aliasgar S Madraswala

Hanmant Pramod Belgal

Kiran Pangal

Robert Frickey

David B Carlton

Donia Sebastian

Pranav Kalavade

Paul D Ruby

Feng Zhu

Ning Wu

Mark Anthony Golez

Ali Khakifirooz

Iwen Chao

Yu Du

Neelesh Vemula

Qingru Meng

Eric L Hoffman

Lei Chen

Kristopher H Gaewsky

Scott Nelson

Lark-Hoon Leem

Ryan J Norton

Jawad Basit Khan

Ravi H Motwani

Wei Wu

Neal R Mielke

Yi Zou

Myron Loewen

Purval Shyam Sule

Sagar Upadhyay

Hiroyuki Sanda

Curtis A Gittens

Brennan A Watt

Krishna Kumar Parat

Mase J Taub

Andrew W Vogan

Shantanu R Rajwade

Ravi J Kumar

Ye Zhang

Rohit Sudhir Shenoy

Sai Krishna Mylavarapu

Shyam Sunder Raghunathan

Ramkarthik Ganesan

Naveen Prabhu Vittal Prabhu

Kyung Jean Yoon

Joseph F Doller

Joel T Jorgensen

David M Jones

Ivan Kalastirsky

Varsha Regulapati

Sagar S Sidhpura

Naga Kiranmayee Upadhyayula

Cole Uhlman

Justin R Dayacap

Jing-Jing Li

Kaoru Naganuma

Rosanna Yee

Svanhild M Salmons

Shu-Jen Lee

Chu-hsiang Teng

Aaron Lutzker

A method performed by a solid state drive is described. The method includes, on a channel that internally couples a controller of the solid state drive to a storage device of the solid state drive, sending write data for a program operation to be performed by one of the storage device's logical units in separate chunks over the channel. The method also includes inserting higher priority traffic items of other logical units of the storage device in between the separate chunks.

Solid state drive with multiplexed internal channel access during program data transfers

Systems, apparatuses and methods may provide for technology that generates a first set of scrambler bits based on a destination page number associated with data, generates a second set of scrambler bits based on a programmable nonlinear function, and combines the first set of scrambler bits and the second set of scrambler bits into a scrambler seed. In one example, the technology also randomizes the data based on the scrambler seed to obtain outgoing randomized data and writes the outgoing randomized data to a non-volatile memory.

Programmable and high-performance data scrambler for non-volatile memory controllers

A method and apparatus to reduce read retry operations in a NAND Flash memory is provided. To reduce the number of read retries for future reads, a word line group is assigned an optimal read voltage, the reference voltage that results in eliminating the read error for the word line is selected as the optimal read voltage (also referred to as a 'sticky voltage') for the word line group to be used for a next read of the page. An optimal read voltage per word line group for the page per NAND Flash memory die is stored in the lookup table. Storing an optimal read voltage per word line group instead of per die reduces the number of read retries.

Method and apparatus to improve read latency of a multi-threshold level cell block-based non-volatile memory

An apparatus is described. The apparatus includes a memory chip having logic circuitry to suspend application of an erasure voltage, wherein, respective responses of the erasure voltage to a decision to suspend the application of the erasure voltage depend on where the erasure voltage is along its waveform.

Solid state drive (SSD) with in-flight erasure iteration suspension

A data structure is maintained for performing a program operation that is allowed to be suspended to perform reads in a NAND device, where the data structure indicates a plurality of tiers, where each tier of the plurality of tiers has a number of allowed suspends of the program operation while executing in the tier, and where a sum of the number of allowed suspends for all tiers of the plurality of tiers equals a maximum allowed number of suspends of the program operation. In response to performing a resume of the program operation, after performing a read following a suspend of the program operation, a determination is made of a tier of the plurality of tiers for the program operation and a subsequent suspend of the program operation is performed only after a measure of progress of the program operation has been exceeded in the determined tier.

Method, system, and apparatus for multi-tiered progressive memory program operation suspend and resume

Independent multi-plane commands for non-volatile memory devices are described. In one example, a three-dimensional (3D) NAND memory device includes 3D NAND dies, each die including multiple planes of memory cells. The device includes input/output (I/O) circuitry to receive multiple commands from a host, each of the received commands to access one of the planes. The device includes logic (which can be implemented with, for example, an ASIC controller, firmware, or both) to queue the commands in separate queues for each of the planes based on a target plane of each of the commands. The logic issues the commands to their target planes independent of other planes' status, and tracks completion status of the commands independently for each plane.

Independent NAND memory operations by plane

An example apparatus includes a non-volatile memory including a first memory having a first write rate and a second memory having a second write rate, the first write rate greater than the second write rate An example controller is to determine, based on a ratio, a first portion of the data to be written to the first memory, and a second portion of the data to be written to the second memory type, the second portion of the data not included in the first portion of the data.

Methods and apparatus to configure performance of a solid state drive based on host write bandwidth

Examples described herein can be used to reduce a number of re-read operations and potentially avoid data recovery operations, which can be time consuming. A determination can be made of a read voltage to apply during an operation to cause a read of data stored in a region of a memory device. The region of the memory device can be read using the read voltage. If the region is not successfully read, then an error level indication can be measured and a second read voltage can be determined for a re-read operation. If the re-read operation is not successful, then a second error level indication can be measured for the re-read operation. A third read voltage can be selected based on the change from the error level indication to the second error level indication.

Techniques to a set voltage level for a data access

A refreshing method is described. The method includes recognizing a set of blocks of a non-volatile memory for refreshing and then refreshing a subset of the data within the blocks, where, invalid data within the blocks is not recognized for refreshing and a group of blocks whose oldest data has not aged for a pre-set time period is not recognized for refreshing.

Non volatile mass storage device with improved refresh algorithm

An embodiment of a semiconductor apparatus may include technology to determine an error rate associated with a read request for a persistent storage media, compare the determined error rate against a pre-fail threshold, and adjust a read voltage shift direction for the persistent storage media if the determined error rate exceeds the pre-fail threshold. Other embodiments are disclosed and claimed.

Proactive reduction of re-read triggering

An embodiment of a semiconductor apparatus may include technology to determine a differentiator associated with an access request for two or more memory devices, and set a target order for the two or more memory devices based on the differentiator. Other embodiments are disclosed and claimed.

Ordering of memory device mapping to reduce contention

A first type of command is suspended, by a controller of a non-volatile memory device, in response to determining that a second type of command is waiting for execution. The first type of command is split into a plurality of chunks based on a computed criteria. A second type of command is executed in between execution of at least two chunks of the first type of command.

Method, system, and apparatus for nested suspend and resume in a solid state drive

Provided are an apparatus, system and method for apparatus, system and method for throttling an acceptance rate for adding host Input/Output (I/O) commands to a buffer in a non-volatile memory storage device. Information is maintained on an input rate at which I/O commands are being added to the buffer and information is maintained on an output rate at which I/O commands are processed from the buffer to apply to execute against the non-volatile memory. A determination is made of a current level of available space in the buffer and an acceptance rate at which I/O commands are added to the buffer from the host system to process based on the input rate, the output rate, the current level of available space, and an available space threshold for the buffer to maintain the buffer at the available space threshold. I/O commands are added to the buffer to process based on the acceptance rate. The I/O commands are accessed from the buffer to process to execute against the non-volatile memory.

Apparatus, system and method for throttling a rate at which commands are accepted in a storage device

A reduction in Quality of Service (QoS) latency for host read commands in a power limited operation mode in a storage device is provided. A priority level is assigned to a host command using weighted round robin arbitration. Power resources are allocated based on the priority levels assigned to host commands to minimize host read command latency in the power limited operation mode.

Method and apparatus to prioritize read response time in a power-limited storage device

Growing community of inventors

San Jose, CA, United States of America

Xin Guo