Patents Examined by Connie C. Yoha
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Patent number: 11568913Abstract: Methods, systems, and devices for voltage adjustment based on, for example, pending refresh operations are described. A memory device may periodically perform refresh operations to refresh volatile memory cells and may at times postpone performing one or more refresh operations. A memory device may determine a quantity of pending (e.g., postponed) refresh operations, such as by determining a quantity of refresh intervals that have elapsed without receiving or executing a refresh command, among other methods. A memory device may pre-emptively adjust (or cause to be adjusted) a supply voltage associated with the memory device or memory device component based on the quantity of pending refresh operations to prepare for the current demand associated with the performing the one or more pending refresh operations. For example, the memory device may increase a supply voltage associated with one or more components to prepare for performing multiple pending refresh operations.Type: GrantFiled: February 1, 2021Date of Patent: January 31, 2023Assignee: Micron Technology, Inc.Inventors: Timothy M. Hollis, James S. Rehmeyer, Baekkyu Choi, Yogesh Sharma, Eric J. Stave, Brian W. Huber, Miles S. Wiscombe
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Patent number: 11551740Abstract: A semiconductor memory device includes: an input control circuit suitable for providing an active address which is input together with an active command, as an input address; a plurality of latches suitable for sequentially storing, as a latch address, the input address according to input control signals and outputting the latch addresses as a target address according to output control signals; a plurality of counters respectively corresponding to the latches and each suitable for increasing, when the active address matches the latch address stored in the latch, a counting value corresponding to the latch; and a refresh controller suitable for dividing the counters and the latches into a plurality of groups based on the counting values and generating, in response to a refresh command, reset signals for initializing the counters included in one group of the groups.Type: GrantFiled: June 21, 2021Date of Patent: January 10, 2023Assignee: SK hynix Inc.Inventors: Woongrae Kim, Kwi Dong Kim
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Patent number: 11545206Abstract: Methods, systems, and devices for differential amplifier schemes for non-switching state compensation are described. During a read operation, a first node of a memory cell may be coupled with an input of differential amplifier while a second node of the memory cell may be biased with a first voltage (e.g., to apply a first read voltage across the memory cell). The second node of the memory cell may subsequently be biased with a second voltage (e.g., to apply a second read voltage across the memory cell), which may support the differential amplifier operating in a manner that compensates for a non-switching state of the memory cell. By compensating for a non-switching state of a memory cell during read operations, read margins may be increased.Type: GrantFiled: April 21, 2021Date of Patent: January 3, 2023Assignee: Micron Technology, Inc.Inventors: Daniele Vimercati, Xinwei Guo
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Patent number: 11532348Abstract: A variety of applications can include multiple memory die packages configured to engage in peak power management (PPM) across the multiple packages of memory dies. A communication line coupled to each memory die in the multiple memory die packages can be used to facilitate the PPM. A global management die can start a communication sequence among the multiple memory die packages to share a current budget across the multiple memory die packages by driving a signal on the communication line. Local management dies can use the received signal having clock pulses driven by the global management die on the communication line to engage in the PPM. To engage in global PPM, each memory die can be structured, to be selected as the global management die or a local management die, with one or more controllers to interface with the multiple memory die packages and to handle current budget limits.Type: GrantFiled: December 2, 2020Date of Patent: December 20, 2022Assignee: Micron Technology, Inc.Inventors: Liang Yu, Jeremy Wayne Butterfield, Jeremy Binfet
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Patent number: 11527280Abstract: A memory device comprises a memory array, a counter unit, and a service unit. The memory array comprises cells arranged in rows and columns, wherein a subset of the cells in each of the rows holds a row activation count for each row. The counter unit, in response to an activation of the row caused by a read operation on at least a portion of the row, increments the row activation count for at least one of the rows prior to a completion of the read operation, and writes-back the row activation count in an incremented state to the subset of the cells in the row that held the row activation count prior to the activation. The service unit is coupled to the counter unit and performs a service with respect to one or more other rows, offset from the row, in response to the row activation count associated with the row satisfying service criteria.Type: GrantFiled: January 22, 2021Date of Patent: December 13, 2022Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: John Grant Bennett, Stefan Saroiu
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Patent number: 11514970Abstract: A memory device according to an embodiment includes first and second interconnects, memory cells, and a control circuit. In a first process, the control circuit applies a write voltage of a first direction to a memory cell coupled to selected first and second interconnects, and applies a write voltage of a second direction to a memory cell coupled to the selected first interconnect and a non-selected second interconnect. In second processes of first to m-th trial processes, the control circuit applies the write voltage of the second direction to the memory cell coupled to the selected first and second interconnects, and omits a write operation in which the memory cell coupled to the selected first interconnect and the non-selected second interconnect is targeted.Type: GrantFiled: September 9, 2021Date of Patent: November 29, 2022Assignee: Kioxia CorporationInventors: Marina Yamaguchi, Kensuke Ota, Kazuhiko Yamamoto, Masumi Saitoh
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Patent number: 11501823Abstract: A semiconductor memory device includes a memory cell array, an ECC engine, a voltage generator and a control logic circuit. The memory cell array includes a plurality of memory cells coupled to word-lines and bit-lines, and a plurality of sense amplifiers to sense data stored in the plurality of memory cells. The ECC engine reads memory data from a target page of the memory cell array, performs an ECC decoding on the memory data, detects, based on the ECC decoding, an error in the memory data, and outputs error information associated with the error. The voltage generator provides driving voltages to the plurality of sense amplifiers, respectively. The control logic circuit controls the ECC engine, and controls the at least one voltage generator to increase an operating margin of each of the plurality of sense amplifiers based on error pattern information including the error information.Type: GrantFiled: March 9, 2020Date of Patent: November 15, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sangyun Kim, Younghun Seo, Hyejung Kwon, Myungkyu Lee, Sunghye Cho
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Patent number: 11495272Abstract: An electronic device may include: an input/output control signal generation circuit configured to generate an input control signal and a first output control signal during a write operation, and generate a second output control signal during a write operation with an auto-precharge operation; and a bank address output circuit configured to latch a bank address based on the input control signal, and output the latched bank address as a write bank address for the write operation or a precharge bank address for the auto-precharge operation, based on the first output control signal and the second output control signal.Type: GrantFiled: January 26, 2021Date of Patent: November 8, 2022Assignee: SK hynix Inc.Inventor: Woongrae Kim
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Patent number: 11488646Abstract: An encoder includes an encoding unit configured to receive 2n-bit read data and to generate 2m-bit read data, and an output driver configured to input m-bit first read data of the 2m-bit read data, to transmit voltage and/or current a first number of times corresponding to a number of first bits indicating a first state included in the m-bit first read data or to transmit current corresponding to the number of first bits during an activation period of a clock signal, and to transmit the voltage and/or the current a second number of times corresponding to a number of second bits indicating the first state included in m-bit second read data of the 2m-bit read data or to transmit current corresponding to the number of second bits during a deactivation period of the clock signal, wherein n is at least 2 and m is at least 3.Type: GrantFiled: June 23, 2020Date of Patent: November 1, 2022Inventor: Byongmo Moon
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Patent number: 11482276Abstract: A memory device includes a memory array having a first memory cell in a first column of the memory array, a second memory cell in the first column of the memory array, a first read bit line extending in a column direction and connected to the first memory cell to read data from the first memory cell, and a second read bit line extending in the column direction and connected to the second memory cell to read data from the second memory cell.Type: GrantFiled: October 30, 2020Date of Patent: October 25, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITEDInventors: Hidehiro Fujiwara, Yi-Hsun Chiu, Yih Wang
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Patent number: 11482275Abstract: Apparatuses, systems, and methods for dynamically allocated aggressor detection. A memory may include an aggressor address storage structure which tracks access patterns to row addresses and their associated bank addresses. These may be used to determine if a row and bank address received as part of an access operation are an aggressor row and bank address. The aggressor row address may be used to generate a refresh address for a bank identified by the aggressor bank address. Since the aggressor storage structure tracks both row and bank addresses, its storage space may be dynamically allocated between banks based on access patterns to those banks.Type: GrantFiled: January 20, 2021Date of Patent: October 25, 2022Assignee: Micron Technology, Inc.Inventors: Sujeet Ayyapureddi, Donald M. Morgan
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Patent number: 11475940Abstract: Apparatuses for providing pads included in external terminals of a semiconductor device are described. An example apparatus includes a memory cell array, a data queue (DQ) circuit, a data pad and a power pad. The memory cell array may include one or more memory cells. In a write operation, the data pad receives write data and provides the write data to the DQ circuit. The DQ circuit receives the write data and provides the write data to the memory cell array. In a read operation, the DQ circuit receives read data from the memory cell array and provides the read data. The data pad receives the read data from the DQ circuit and provides the read data. The power pad provides a power supply voltage. The data pad and the power pad are disposed across from each other with respect to the DQ circuit.Type: GrantFiled: December 11, 2020Date of Patent: October 18, 2022Assignee: Micron Technology, Inc.Inventor: Toshinao Ishii
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Patent number: 11475952Abstract: A ternary content addressable memory and a two-port SRAM are provided and include a storage cell and two transistors. The storage cell includes a first active region, a second active region, a third active region, and a fourth active region, extending along a first direction, and a first gate line, a second gate line, a third gate line, and a fourth gate line extending along a second direction. The first gate line crosses the third active region and the fourth active region, the second gate line crosses the fourth active region, the third gate line crosses the first active region, and the fourth gate line crosses the first active region and the second active region. The transistors are electrically connected to the storage cell, and the transistors and the storage cell are arranged along the first direction.Type: GrantFiled: February 19, 2021Date of Patent: October 18, 2022Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chun-Hsien Huang, Yu-Tse Kuo, Shu-Ru Wang, Chun-Yen Tseng, Chun-Chieh Chang
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Patent number: 11468952Abstract: A memory controller includes an interface and a control module. The interface interfaces with a memory device which includes a plurality of dies that each include a plurality of blocks. The control module groups a plurality of blocks included in different dies and manages the plurality of blocks as a super block. The control module performs scheduling to alternately perform a program on a part of an Nth super block, wherein N is a natural number, and a phased erase on an N+1st super block, and the control module completes the program on the Nth super block and the erase on the Nth super block before the program on the N+1st super block starts.Type: GrantFiled: March 3, 2021Date of Patent: October 11, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: In-Su Kim, Hyun Jin Choi, Alain Tran, Beom Kyu Shin, Woo Seong Cheong
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Patent number: 11468933Abstract: This application relates to the field of storage technologies and discloses a content addressable memory, a data processing method, and a network device, to resolve a problem that an existing CAM has a relatively large area, and consumes relatively large power. The CAM includes bit units of M rows and N columns, each bit unit includes a first FeFET and a second FeFET, a source of the first FeFET is connected to a drain of the second FeFET, a source of the second FeFET is grounded, bit cells of a same column correspond to a same match line, and a drain of a first FeFET in each bit cell of a same column is connected to a match line corresponding to the column. Bit cells of a same row correspond to a same first bit line and a same second bit line, a gate of a first FeFET in each bit cell of a same row is connected to a first bit line corresponding to the row, and a gate of a second FeFET in each bit cell of a same row is connected to a second bit line corresponding to the row.Type: GrantFiled: January 25, 2021Date of Patent: October 11, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jingzhou Yu, Linchun Wang
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Patent number: 11450376Abstract: A memory device includes a word line driver circuit, which can advantageously reduce gate stress on a transistor using a lower high voltage that varies with a command, and an operating method of the memory device. The memory device includes a plurality of memory blocks, provides a high voltage or the lower high voltage to a variable high voltage line in response to a block select signal, and changes a level of the lower high voltage to a low voltage level, a medium voltage level, or a high voltage level based on the command. The memory device applies the lower high voltage to gates of P-type metal oxide semiconductor (PMOS) transistors connected to a word line driving signal, which drives word lines of non-selected memory blocks among the plurality of memory blocks.Type: GrantFiled: September 30, 2020Date of Patent: September 20, 2022Inventors: Sunggeun Do, Youngsik Kim, Gongheum Han, Sangyun Kim, Seunghyun Cho
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Patent number: 11450371Abstract: An object is to shorten the time for rewriting data in memory cells. A memory module includes a first memory cell, a second memory cell, a selection transistor, and a wiring WBL1. The first memory cell includes a first memory node. The second memory cell includes a second memory node. One end of the first memory cell is electrically connected to the wiring WBL1 through the selection transistor. The other end of the first memory cell is electrically connected to one end of the second memory cell. The other end of the second memory cell is electrically connected to the wiring WBL1. When the selection transistor is on, data in the first memory node is rewritten by a signal supplied through the selection transistor to the wiring WBL1. When the selection transistor is off, data in the first memory node is rewritten by a signal supplied through the second memory node to the wiring WBL1.Type: GrantFiled: November 2, 2020Date of Patent: September 20, 2022Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Takahiro Fukutome
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Patent number: 11423993Abstract: A method reading memory using bi-directional sensing, including programming first memory cells coupled to a first word-line using a normal programming order; programming second memory cells coupled to a second word-line using a normal programming order; reading data from the first memory cells by applying a normal sensing operation to the first word-line; and reading data from the second memory cells by applying a reverse sensing operation to the second word-line. Methods also include receiving an error associated with reading data from the first memory cells; and then reading the data from the first memory cells by applying a reverse sensing operation to the first word-line. Method also include receiving an error associated with reading the data from the second memory cells; and then reading the data from the second memory cells by applying a normal sensing operation to the second word-line.Type: GrantFiled: November 6, 2019Date of Patent: August 23, 2022Assignee: SanDisk Technologies LLCInventors: Zhiping Zhang, Muhammad Masuduzzaman, Huai-Yuan Tseng, Peng Zhang, Dengtao Zhao, Deepanshu Dutta
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Patent number: 11423962Abstract: A bit line is pre-charged based on a clock signal internal to a bit line pre-charge circuit when a bit line pre-charge window is within a margin of a predetermined pre-charge window. A bit line is pre-charged based on a clock signal external to the bit line pre-charge circuit when the bit line pre-charge window is outside the margin of the predetermined pre-charge window.Type: GrantFiled: May 27, 2021Date of Patent: August 23, 2022Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, ltd.Inventors: Che-Ju Yeh, Yu-Hao Hsu, Hau-Tai Shieh, Cheng Lee
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Patent number: 11423975Abstract: A novel memory device is provided. A first cell array including a plurality of memory cells and a second cell array including a plurality of memory cells are provided to overlap with each other. Two bit lines included in the first bit line pair are electrically connected to part of the memory cells included in the first cell array and to part of the memory cells included in the second cell array. Two bit lines included in the second bit line pair are electrically connected to part of the memory cells included in the first cell array and to part of the memory cells included in the second cell array. In the first cell array, one of the bit lines included in the second bit line pair includes a region overlapping with part of the first bit line pair. In the second cell array, the other of the bit lines included in the second bit line pair includes a region overlapping with part of the first bit line pair.Type: GrantFiled: February 13, 2019Date of Patent: August 23, 2022Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yuki Okamoto, Tatsuya Onuki