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1. WO2020222991 - SAFETY EVENT DETECTION FOR A MEMORY DEVICE

Publication Number WO/2020/222991
Publication Date 05.11.2020
International Application No. PCT/US2020/027363
International Filing Date 09.04.2020
IPC
G11C 11/4078 2006.01
GPHYSICS
11INFORMATION STORAGE
CSTATIC STORES
11Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
21using electric elements
34using semiconductor devices
40using transistors
401forming cells needing refreshing or charge regeneration, i.e. dynamic cells
4063Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
407for memory cells of the field-effect type
4078Safety or protection circuits, e.g. for preventing inadvertent or unauthorised reading or writing; Status cells; Test cells
G11C 11/406 2006.01
GPHYSICS
11INFORMATION STORAGE
CSTATIC STORES
11Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
21using electric elements
34using semiconductor devices
40using transistors
401forming cells needing refreshing or charge regeneration, i.e. dynamic cells
406Management or control of the refreshing or charge-regeneration cycles
G06F 3/06 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from, or digital output to, record carriers
CPC
G06F 11/1415
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
11Error detection; Error correction; Monitoring
07Responding to the occurrence of a fault, e.g. fault tolerance
14Error detection or correction of the data by redundancy in operation
1402Saving, restoring, recovering or retrying
1415at system level
G06F 13/1668
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
13Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
14Handling requests for interconnection or transfer
16for access to memory bus
1668Details of memory controller
G06F 2201/82
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2201Indexing scheme relating to error detection, to error correction, and to monitoring
82Solving problems relating to consistency
Applicants
  • MICRON TECHNOLOGY, INC. [US]/[US]
Inventors
  • BOEHM, Aaron, P.
  • SCHAEFER, Scott, E.
Agents
  • HARRIS, Philip
Priority Data
16/839,43803.04.2020US
62/840,02729.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SAFETY EVENT DETECTION FOR A MEMORY DEVICE
(FR) DÉTECTION D'ÉVÉNEMENT DE SÉCURITÉ POUR UN DISPOSITIF DE MÉMOIRE
Abstract
(EN)
Methods, systems, and devices for performing safety event detection for a memory device are described. For example, a memory array of a memory device may operate in a first mode of operation (e.g., a normal mode of operation). An event associated with a reduction of data integrity for the memory array may be detected. In some cases, the event may be associated with a temperature of the memory device, a voltage level detected at the memory device, an error event at the memory device, or the like. Based on the detected event, it may be determined whether to adjust the operation of the memory device to a second mode of operation (e.g., a safe mode of operation). The second mode of operation may correspond to a mode of operation that increases data retention characteristics.
(FR)
L'invention concerne des procédés, des systèmes, et des dispositifs permettant d'effectuer une détection d’événement de sécurité pour un dispositif de mémoire. Par exemple, un réseau de mémoire d'un dispositif de mémoire peut fonctionner dans un premier mode de fonctionnement (par exemple, un mode de fonctionnement normal). Un événement associé à une réduction de l'intégrité des données pour le réseau de mémoire peut être détecté. Dans certains cas, l'événement peut être associé à une température du dispositif de mémoire, à un niveau de tension détecté au niveau du dispositif de mémoire, à un événement d'erreur au niveau du dispositif de mémoire, ou analogue. Sur la base de l'événement détecté, il peut être déterminé s'il faut régler le fonctionnement du dispositif de mémoire sur un second mode de fonctionnement (par exemple, un mode de fonctionnement sûr). Le second mode de fonctionnement peut correspondre à un mode de fonctionnement qui augmente les caractéristiques de rétention de données.
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