WO2014074496A3 - Cam nand with or function and full chip search capability - Google Patents
Cam nand with or function and full chip search capability Download PDFInfo
- Publication number
- WO2014074496A3 WO2014074496A3 PCT/US2013/068448 US2013068448W WO2014074496A3 WO 2014074496 A3 WO2014074496 A3 WO 2014074496A3 US 2013068448 W US2013068448 W US 2013068448W WO 2014074496 A3 WO2014074496 A3 WO 2014074496A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- operations
- data
- nand
- cam
- block
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0483—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells having several storage transistors connected in series
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C15/00—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores
- G11C15/04—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores using semiconductor elements
- G11C15/046—Digital stores in which information comprising one or more characteristic parts is written into the store and in which information is read-out by searching for one or more of these characteristic parts, i.e. associative or content-addressed stores using semiconductor elements using non-volatile storage elements
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Read Only Memory (AREA)
Abstract
Various techniques for extending the capabilities of CAM NAND type memories are discussed. Multi-block or even full chip search operations can be performed. In addition to the inherent AND property of NAND strings, the memory array has an inherent OR property between NAND string from different blocks along the same bit line that can be exploited through multi-block CAM-type operations. To reduce data-dependent word line to word line effects, in multiple data dependent sensing operations, the sensing can be broken up into sub-operations that avoid data dependent values on adjacent word lines. To improve data protection, subsequent to writing a memory block with indices, the word lines are read back and compared bit-by-bit with their intended values and the results are accumulated to determine whether any of indices include error. A bloom filter can also be used as an initial check during data search operations in order to provide increased data protection.
Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261724401P | 2012-11-09 | 2012-11-09 | |
US61/724,401 | 2012-11-09 | ||
US201261730884P | 2012-11-28 | 2012-11-28 | |
US61/730,884 | 2012-11-28 | ||
US13/749,361 US8634247B1 (en) | 2012-11-09 | 2013-01-24 | NAND flash based content addressable memory |
US13/749,361 | 2013-01-24 | ||
US13/756,076 US8811085B2 (en) | 2012-11-09 | 2013-01-31 | On-device data analytics using NAND flash based intelligent memory |
US13/756,076 | 2013-01-31 | ||
US13/827,407 US8792279B2 (en) | 2012-11-09 | 2013-03-14 | Architectures for data analytics using computational NAND memory |
US13/827,407 | 2013-03-14 | ||
US13/957,248 US8780635B2 (en) | 2012-11-09 | 2013-08-01 | Use of bloom filter and improved program algorithm for increased data protection in CAM NAND memory |
US13/957,198 | 2013-08-01 | ||
US13/957,248 | 2013-08-01 | ||
US13/957,219 | 2013-08-01 | ||
US13/957,219 US8773909B2 (en) | 2012-11-09 | 2013-08-01 | CAM NAND with or function and full chip search capability |
US13/957,198 US8780634B2 (en) | 2012-11-09 | 2013-08-01 | CAM NAND with OR function and full chip search capability |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014074496A2 WO2014074496A2 (en) | 2014-05-15 |
WO2014074496A3 true WO2014074496A3 (en) | 2014-07-03 |
Family
ID=50685301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2013/068448 WO2014074496A2 (en) | 2012-11-09 | 2013-11-05 | Cam nand with or function and full chip search capability |
Country Status (1)
Country | Link |
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WO (1) | WO2014074496A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11158369B2 (en) * | 2018-12-26 | 2021-10-26 | Western Digital Technologies, Inc. | On-chip non-volatile memory (NVM) search |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1720168A1 (en) * | 2005-04-27 | 2006-11-08 | Samsung Electronics Co., Ltd. | Integrated circuit device, flash memory array, nonvolatile memory device and operating method |
US20090141566A1 (en) * | 2007-12-03 | 2009-06-04 | International Business Machines Corporation | Structure for implementing memory array device with built in computation capability |
US20090190404A1 (en) * | 2008-01-25 | 2009-07-30 | Roohparvar Frankie F | Nand flash content addressable memory |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7170802B2 (en) | 2003-12-31 | 2007-01-30 | Sandisk Corporation | Flexible and area efficient column redundancy for non-volatile memories |
US8287353B2 (en) | 2003-07-02 | 2012-10-16 | Scientific Games International, Inc. | Lottery game method |
US7206230B2 (en) | 2005-04-01 | 2007-04-17 | Sandisk Corporation | Use of data latches in cache operations of non-volatile memories |
US7394690B2 (en) | 2006-03-24 | 2008-07-01 | Sandisk Corporation | Method for column redundancy using data latches in solid-state memories |
US7616499B2 (en) | 2006-12-28 | 2009-11-10 | Sandisk Corporation | Retention margin program verification |
US7477547B2 (en) | 2007-03-28 | 2009-01-13 | Sandisk Corporation | Flash memory refresh techniques triggered by controlled scrub data reads |
US8102705B2 (en) | 2009-06-05 | 2012-01-24 | Sandisk Technologies Inc. | Structure and method for shuffling data within non-volatile memory devices |
US7974124B2 (en) | 2009-06-24 | 2011-07-05 | Sandisk Corporation | Pointer based column selection techniques in non-volatile memories |
US20110002169A1 (en) | 2009-07-06 | 2011-01-06 | Yan Li | Bad Column Management with Bit Information in Non-Volatile Memory Systems |
US8687421B2 (en) | 2011-11-21 | 2014-04-01 | Sandisk Technologies Inc. | Scrub techniques for use with dynamic read |
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2013
- 2013-11-05 WO PCT/US2013/068448 patent/WO2014074496A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1720168A1 (en) * | 2005-04-27 | 2006-11-08 | Samsung Electronics Co., Ltd. | Integrated circuit device, flash memory array, nonvolatile memory device and operating method |
US20090141566A1 (en) * | 2007-12-03 | 2009-06-04 | International Business Machines Corporation | Structure for implementing memory array device with built in computation capability |
US20090190404A1 (en) * | 2008-01-25 | 2009-07-30 | Roohparvar Frankie F | Nand flash content addressable memory |
Also Published As
Publication number | Publication date |
---|---|
WO2014074496A2 (en) | 2014-05-15 |
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