Patents Examined by Sung Il Cho
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Patent number: 11967361Abstract: One example of the present disclosure includes performing a comparison operation in memory using a logical representation of a first value stored in a first portion of a number of memory cells coupled to a sense line of a memory array and a logical representation of a second value stored in a second portion of the number of memory cells coupled to the sense line of the memory array. The comparison operation compares the first value to the second value, and the method can include storing a logical representation of a result of the comparison operation in a third portion of the number of memory cells coupled to the sense line of the memory array.Type: GrantFiled: January 31, 2022Date of Patent: April 23, 2024Inventors: Kyle B. Wheeler, Troy A. Manning, Richard C. Murphy
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Patent number: 11967365Abstract: Various implementations described herein are related to a device having a memory cell with logic that is configured to store data and passgates that are configured to access the data stored in the logic. The device may include a first number of input-output ports that are time-multiplexed with the passgates so as to increase the first number of input-output ports to a second number of input-output ports that is greater than the first number of input-output ports.Type: GrantFiled: June 10, 2020Date of Patent: April 23, 2024Assignee: Arm LimitedInventors: Yew Keong Chong, Bikas Maiti, Venu Anantuni, Martin Jay Kinkade
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Patent number: 11955170Abstract: A static random-access memory is set forth comprising: a word line circuit for generating a word line signal on a word line; a plurality of six-transistor memory cells arranged between a first bitline, a second bitline and the word line for simultaneously selecting one of either all or a portion of the plurality of six-transistor memory cells for data reading or writing, and wherein each memory cell includes first and second n-channel transistors and a bitline precharge circuit for precharging the first bitline and second bitline to a voltage of Vdd/2 prior to the first and second n-channel transistors receiving the word line signal.Type: GrantFiled: August 21, 2023Date of Patent: April 9, 2024Assignee: UNTETHER AI CORPORATIONInventors: Katsuyuki Sato, William Martin Snelgrove, Saijagan Saijagan, Joseph Francis Rohlman
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Patent number: 11955169Abstract: A multi-port memory is provided that supports collision between a read port and a write port to the same multi-port bitcell. A sense amplifier reads a data bit from a multi-port bitcell when a write port to the multi-port bitcell is addressed during a system clock signal. Should a read port to the multi-port bitcell be addressed during the same system clock signal, a multiplexer selects for an output bit from the sense amplifier.Type: GrantFiled: March 23, 2021Date of Patent: April 9, 2024Assignee: QUALCOMM IncorporatedInventors: Pradeep Raj, Rahul Sahu, Sharad Kumar Gupta
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Patent number: 11948617Abstract: Methods, systems, and devices for a magnetic cache for a memory device are described. Magnetic storage elements (e.g., magnetic memory cells, such as spin-transfer torque (STT) memory cells or magnetic tunnel junction (MTJ) memory cells) may be configured to act as a cache for a memory array, where the memory array includes a different type of memory cells. The magnetic storage elements may be inductively coupled to access lines for the memory array. Based on this inductive coupling, when a memory value is written to or read from a memory cell of the array, the memory value may concurrently be written to a magnetic storage element based on associated current through an access line used to write or read the memory cell. Subsequent read requests may be executed by reading the memory value from the magnetic storage element rather than from the memory cell of the array.Type: GrantFiled: February 22, 2022Date of Patent: April 2, 2024Assignee: Micron Technology, Inc.Inventor: Dmitri A. Yudanov
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Patent number: 11948642Abstract: A semiconductor memory device includes: a memory cell array including a plurality of NAND strings, each of the plurality of NAND strings including a plurality of memory cell transistors connected to each other in series; a plurality of word lines commonly connected to the plurality of memory strings and connected to the plurality of memory cell transistors, respectively; and a row decoder configured to supply a predetermined voltage higher than a ground voltage to each of the plurality of word lines after a program operation for writing data to a selected word line is completed.Type: GrantFiled: February 7, 2023Date of Patent: April 2, 2024Assignee: Kioxia CorporationInventors: Kenrou Kikuchi, Yasuhiro Shimura
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Patent number: 11935584Abstract: Drivers for sense amplifiers are disclosed. A driver may include two or more drain areas extending in a first direction and two or more source areas extending in the first direction. The driver may also include a drain interconnection including two or more first drain-interconnection portions which extend in the first direction above the two of more drain areas and one or more second drain-interconnection portions extending in a second direction between the two or more first drain-interconnection portions. The driver may also include a source interconnection including two or more first source-interconnection portions extending in the first direction above the two or more source areas and one or more second source-interconnection portions extending in the second direction between the two or more first source-interconnection portions. Associated systems are also disclosed.Type: GrantFiled: September 27, 2022Date of Patent: March 19, 2024Assignee: Micron Technology, Inc.Inventor: Mamoru Nishizaki
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Patent number: 11929116Abstract: A memory device and a method for operating the memory device are provided. The memory device includes a memory cell and a bit line connected to the memory cell. A negative voltage generator is connected to the bit line. The negative voltage generator, when enabled, is operative to provide a first write path for the bit line. A control circuit is connected to the negative voltage generator and the bit line. The control circuit is operative to provide a second write path for the bit line when the negative voltage generator is not enabled.Type: GrantFiled: January 23, 2023Date of Patent: March 12, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Yi-Hsin Nien, Hidehiro Fujiwara, Chih-Yu Lin, Yen-Huei Chen
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Patent number: 11915743Abstract: A latch formed from a memory cell includes a clock input terminal configured to receive a clock signal, complementary first and second data terminals, and a latch circuit. The latch circuit has first and second inverters. The first inverter has an input terminal coupled to the first data terminal, and the second inverter has an input terminal coupled to the second data terminal. A first pass gate transistor is coupled between an output terminal of the second inverter and the first data terminal. A second pass gate transistor is coupled between an output terminal of the first inverter and the second data terminal. The first and second pass gate transistors each have a gate terminal coupled to the clock input terminal. The input terminal of the first inverter is not directly connected to the output terminal of the second inverter, and the input terminal of the second inverter is not directly connected to the output terminal of the first inverter.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Hua-Hsin Yu, Cheng Hung Lee, Hung-Jen Liao, Hau-Tai Shieh
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Patent number: 11915746Abstract: A memory device includes a plurality of memory cells; a word line, connected to one of the plurality of memory cells, that is configured to provide a first WL pulse having a rising edge and a falling edge that define a pulse width of the first WL pulse; a first tracking WL, formed adjacent to the memory cells, that is configured to provide, via being physically or operatively coupled to a bit line (BL) configured to write a logic state to the memory cell, a second WL pulse having a rising edge with a decreased slope; and a first tracking BL, configured to emulate the BL, that is coupled to the first tracking WL such that the pulse width of the first WL pulse is increased based on the decreased slope of the rising edge of the second WL pulse.Type: GrantFiled: May 12, 2022Date of Patent: February 27, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Wei-jer Hsieh, Yu-Hao Hsu, Zhi-Hao Chang, Cheng Hung Lee
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Patent number: 11915745Abstract: A memory architecture for optimizing leakage currents in standby mode and a method thereof is disclosed. The memory architecture includes a plurality of memory segments configured to operate in one or more modes of operations. The plurality of memory segments includes a plurality of decoder slices. Each of the plurality of decoder slice includes a plurality of wordlines running in the row direction; at least one array power header configured for controlling leakage currents within each of the plurality of decoder slice in the row direction; and a retention header. Each of the plurality of power supply rails running in the column direction are segmented within one or more decoder slice to form one or more segmented power supply node.Type: GrantFiled: September 15, 2021Date of Patent: February 27, 2024Assignee: DXCorr Design Inc.Inventors: Sudarshan Kumar, Mayank Tayal, Sagar Vidya Reddy
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Patent number: 11908506Abstract: Methods, systems, and devices for memory cell biasing techniques are described. A memory cell may be accessed during an access phase of an access operation. A pre-charge phase of the access phase may be initiated. The memory cell may be biased to a voltage (e.g., a non-zero voltage) after the pre-charge phase. In some examples, the memory cell may be biased to the voltage when a word line is unbiased and the memory cell is isolated from the digit line.Type: GrantFiled: March 9, 2021Date of Patent: February 20, 2024Assignee: Micron Technology, Inc.Inventors: Angelo Visconti, Giorgio Servalli, Andrea Locatelli
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Patent number: 11908501Abstract: A storage device includes a first interconnection, a second interconnection, a memory cell connected between the first and second interconnections and including a variable resistance element and a switching element that is connected in series to the variable resistance element, and a control circuit configured to exercise control of a read operation to read data stored in the memory cell. The control circuit exercises control in such a manner as to set the first interconnection which has been charged with a first voltage and the second interconnection which has been charged with a second voltage into floating states, to set the switching element into an on-state by discharging the second interconnection set into the floating state to thereby increase a voltage applied to the memory cell, and to read the data stored in the memory cell in a state in which the switching element is set into the on-state.Type: GrantFiled: August 31, 2021Date of Patent: February 20, 2024Assignee: Kioxia CorporationInventors: Akira Katayama, Kosuke Hatsuda
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Patent number: 11900996Abstract: Disclosed is a memory structure that includes wordlines (WL) and cell supply lines (CSL) positioned between and parallel to voltage boost lines (VBLs). The VBLs enable capacitive coupling-based voltage boosting of the adjacent WL and/or CSL depending on whether a read or write assist is required. During a read operation, all VBLs for a selected row can be charged to create coupling capacitances with the WL and with the CSL and thereby boost both the wordline voltage (Vwl) and the cell supply voltage (Vcs) for a read assist. During a write operation, one VBL adjacent to the WL for a selected row can be charged to create a coupling capacitance with the WL only and thereby boost the Vwl for a write assist. The coupling capacitances created by charging VBLs in the structure is self-adjusting in that as the length of the rows increase so do the potential coupling capacitances.Type: GrantFiled: October 19, 2021Date of Patent: February 13, 2024Assignee: GlobalFoundries U.S. Inc.Inventors: Vivek Raj, Bhuvan R. Nandagopal, Shivraj G. Dharne
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Patent number: 11901005Abstract: Apparatuses and methods for memory including ferroelectric memory cells and dielectric memory cells are disclosed. The apparatus includes a first memory cell including first and second ferroelectric capacitors configured to store charges representing complementary logical values, a second memory cell including first and second dielectric capacitors configured to store charges representing complementary logical values, a first bit line selectably coupled to the first ferroelectric capacitor of the first memory cell and to the first dielectric capacitor of the second memory cell, a second bit line selectably coupled to the second ferroelectric capacitor of the first memory cell and to the second dielectric capacitor of the second memory cell, and a sense amplifier coupled to the first and second bit lines.Type: GrantFiled: November 19, 2020Date of Patent: February 13, 2024Assignee: Micron Technology, Inc.Inventors: Scott J. Derner, Michael A. Shore
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Patent number: 11900995Abstract: Various implementations described herein are related to a method for accessing a bitcell in an array of bitcells with a wordline and a bitline. The method may perform a precharge operation on the bitline that precharges the bitline after a read cycle and before a write cycle. Also, the method may extend precharge time of the precharge operation between the read cycle and the write cycle, e.g., by modulating a wordline signal on the wordline with early cut-off of the wordline signal on the wordline during the read cycle.Type: GrantFiled: April 6, 2021Date of Patent: February 13, 2024Assignee: Arm LimitedInventors: Rajiv Kumar Sisodia, Andy Wangkun Chen, Sriram Thyagarajan, Yew Keong Chong, Ayush Kulshrestha, Munish Kumar
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Patent number: 11894050Abstract: A memory is provided that includes a self-timed memory circuit that controls the isolation of a sense amplifier from a column selected by a column multiplexer until the completion of a bit line voltage difference development delay. The self-timed memory circuit also controls the release of a pre-charge for the sense amplifier responsive to the completion of the bit line voltage difference development delay.Type: GrantFiled: September 22, 2021Date of Patent: February 6, 2024Assignee: QUALCOMM INCORPORATEDInventors: Hochul Lee, Anil Chowdary Kota, Dhvani Sheth, Chulmin Jung
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Patent number: 11887660Abstract: The present invention provides a pseudo dual-port memory. The pseudo dual-port memory includes a single-port memory, a multiplexer, a timing control circuit and an output circuit. The multiplexer is configured to sequentially output a first address and a second address to the single-port memory. The output circuit is configured to receive output data from the single-port memory to generate a first reading result corresponding to the first address and a second reading result corresponding to the second address. The output circuit includes a first sense amplifier and a second sense amplifier, wherein the first sense amplifier receives the output data to generate first data serving as the first reading result according to a first control signal, and the second sense amplifier receives the output data to generate second data serving as the second reading result according to a second control signal.Type: GrantFiled: August 24, 2022Date of Patent: January 30, 2024Assignee: MEDIATEK INC.Inventors: Yi-Ping Kuo, Yi-Te Chiu
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Patent number: 11875843Abstract: Systems and methods are provided for a memory device. A memory device includes a memory array, a column selection circuit coupled to the memory array, where the column selection circuit is configured to generate a column selection signal, and a sense amplifier configured to receive data signals from the memory array. An enable signal generating circuit is configured to generate a first enable signal and a second enable signal. The column selection circuit generates the column selection signal based on the first enable signal, and the sense amplifier is configured to receive a data signal from the memory array in response to the second enable signal.Type: GrantFiled: January 5, 2021Date of Patent: January 16, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Sanjeev Kumar Jain
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Patent number: 11869581Abstract: Memory systems are provided. In an embodiment, a memory device includes a word line driver coupled to a plurality of word lines, a recycle multiplexer coupled to a plurality of bit lines and a plurality of bit line bars, a memory cell array, and a compensation word line driver. The memory cell array includes a first end adjacent the word line driver, a second end away from the word line driver, and a plurality of memory cells. The compensation word line driver is disposed adjacent the second end of the memory cell array and coupled to the plurality of word lines. The recycle multiplexer is configured to selectively couple one or more of the plurality of bit lines or one or more of the plurality of bit line bars to the compensation word line driver.Type: GrantFiled: May 20, 2022Date of Patent: January 9, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTDInventors: Chia-Hao Pao, Shih-Hao Lin, Kian-Long Lim