Abstract: In an embodiment, a method of accessing logic data stored in a differential memory using single-ended mode includes: storing second logic data in an auxiliary memory module of the differential memory by copying first logic data stored in a first main memory module of the differential memory into the auxiliary memory module; refreshing the first logic data; receiving a request for reading the first logic data; when refreshing the first logic data, fetching the second logic data when refreshing the first logic data in response to the request for reading the first logic data; and when not refreshing the first logic data, fetching the first logic data in response to the request for reading the first logic data.
Abstract: A neuromorphic memory system including neuromorphic memory arrays. The neuromorphic memory system includes a presynaptic neuron circuit coupled to a postsynaptic neuron circuit by a resistive memory cell. The method includes generating a presynaptic LIF pulse on a presynaptic LIF line at time t1. An activating operation activates an access transistor coupled to the presynaptic LIF line in response to the presynaptic LIF pulse. The access transistor enables LIF current to pass through the resistive memory cell to a postsynaptic LIF line. An integrating operation integrates the LIF current at the postsynaptic LIF line over time. A comparing operation compares a LIF voltage at the postsynaptic LIF line to a threshold voltage. A generating operation generates a postsynaptic spike timing dependent plasticity (STDP) pulse on a postsynaptic STDP line if the LIF voltage is beyond the threshold voltage.
Type:
Grant
Filed:
November 12, 2019
Date of Patent:
October 20, 2020
Assignee:
Samsung Electronics Co., Ltd.
Inventors:
Kohji Hosokawa, Masatoshi Ishii, SangBum Kim, Chung H. Lam, Scott C. Lewis
Abstract: A non-volatile memory device includes a memory cell array including a plurality of memory cells; a page buffer for performing a plurality of read operations and storing results of the read operations, wherein each of the read operations includes at least one sensing operation for selected memory cells from the plurality of memory cells; a multi-sensing manager for determining a number of sensing operations for each of the plurality of read operations and controlling the page buffer to perform the read operations; and a data identifier for identifying a data state of a bit for the selected memory cells based on the results of the read operations, wherein the multi-sensing manager determines the number of sensing operations for at least one read operation from among the read operations to be different from the number of sensing operations for other read operations from among the read operations.
Type:
Grant
Filed:
October 2, 2018
Date of Patent:
October 13, 2020
Assignee:
SAMSUNG ELECTRONICS CO., LTD.
Inventors:
Jin-bae Bang, Dae-seok Byeon, Ji-su Kim
Abstract: A memory device may include a memory array that includes multiple memory cells. The memory device may also include multiple sense amplifiers that, in operation, may each be connected to one or more memory cells. The sense amplifiers may be designed to assist in writing logical zeros to the multiple memory cells.
Type:
Grant
Filed:
August 29, 2019
Date of Patent:
October 6, 2020
Assignee:
Micron Technology, Inc.
Inventors:
Byung S. Moon, Harish N. Venkata, Gary L. Howe, Myung Ho Bae
Abstract: According to one embodiment, a magnetic memory device includes a first member, a first memory cell, and a controller. The first member includes first, second, and third regions. The first memory cell includes first and second magnetic layers, and a first nonmagnetic layer. The second magnetic layer is provided between the third region and the first magnetic layer. The first nonmagnetic layer is provided between the first and second magnetic layers. The controller is electrically connected to the first and second regions, and the first magnetic layer. The controller programs first information to the first memory cell by setting the first magnetic layer to a first electric potential. The controller programs second information to the first memory cell by setting the first magnetic layer to a second electric potential. The second electric potential is different from the first electric potential. The second information is different from the first information.
Abstract: A sense amplifier driving device is disclosed. The device includes a cell array, a bias current generation unit connected to the cell array via a bit line, a sense amplifier connected to the cell array via the bit line to detect and amplify a bit line voltage of the bit line, and a latch unit that outputs the detected bit line voltage as an output signal in a read operation of the cell array. The sense amplifier includes a precharge transistor that precharges the bit line based on a first voltage during a programming operation of the cell array, a read voltage convey unit connected to the bit line and operates during a read operation of the cell array, and a sensing unit that outputs an output voltage based on the bit line voltage.
Abstract: A non-volatile memory device includes an output driver to output a data signal. The output driver includes a pull-up driver and a pull-down driver. The pull-up driver includes a first pull-up driver having a plurality of P-type transistors and a second pull-up driver having a plurality of N-type transistors. The pull-down driver includes a plurality of N-type transistors. One or more power supply voltages having different voltage levels are selectively applied to the pull-up driver. A first power supply voltage is applied to the first pull-up driver, and a second power supply voltage is applied to the second pull-up driver.
Type:
Grant
Filed:
July 30, 2018
Date of Patent:
September 8, 2020
Assignee:
Samsung Electronics Co., Ltd.
Inventors:
Ji-yeon Shin, Jeong-don Ihm, Byung-hoon Jeong, Jung-june Park
Abstract: A memory storage apparatus and a forming method of a resistive memory device thereof are provided. A test forming voltage is applied to a redundant resistive memory device and a corresponding test current is read. A forming voltage applied to a main memory cell block is determined according to the test forming voltage, the test current, a forming current-voltage characteristic data and a target forming current.
Abstract: A transparent four rank memory module has a front side and a back side. The front side has a third memory rank stacked on a first memory rank. The back side has a fourth memory rank stacked on a second memory rank. An emulator coupled to the memory module activates and controls one individual memory rank from either the first memory rank, the second memory rank, the third memory rank, or the fourth memory rank based on the signals received from a memory controller.
Type:
Grant
Filed:
October 11, 2010
Date of Patent:
August 25, 2020
Assignee:
SMART Modular Technologies, Inc.
Inventors:
Hossein Amidi, Kelvin A. Marino, Satyadev Kolli
Abstract: A memory circuit includes a memory element which includes a first electrode layer including lithium. The memory element further includes a second electrode layer and a solid-state electrolyte layer arranged between the first electrode layer and the second electrode layer. The memory circuit also includes a memory access circuit configured to determine a memory state of the memory element.
Abstract: The application relates to an integrated circuit with SRAM memory and provided with several superimposed levels of transistors, the integrated circuit including SRAM cells provided with a first transistor and a second transistor belonging to an upper level of transistors and each having a double gate composed of an upper electrode and a lower electrode laid out on either side of a semiconductor layer, a lower gate electrode of the first transistor being connected to a lower gate electrode of the second transistor.
Type:
Grant
Filed:
April 9, 2019
Date of Patent:
August 11, 2020
Assignees:
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, STMicroelectronics (Crolles 2) SAS
Abstract: Apparatuses, systems, methods, and computer program products are disclosed for hybrid dual write. An apparatus includes a memory device comprising a plurality of single level cell blocks and a plurality of multi level cell blocks. An apparatus includes a hybrid writing component. A hybrid writing component includes a single level writing circuit that writes data to a plurality of single level cell blocks. A hybrid writing component includes a multi level writing circuit that copies data from a plurality of single level cell blocks to a plurality of multi level cell blocks. A hybrid writing component includes a grouping circuit that directs a single level writing circuit to write data corresponding to a first logical group to a set of single level cell blocks of a plurality of single level cell blocks.
Abstract: A bit cell driving mechanism is disclosed. The mechanism includes a bit cell which includes a first magnetic tunnel junction (MTJ) cell, including a pinned layer, a non-magnetic layer, a free layer having two magnetic regions separated by a laterally moveable domain wall, and a spin-hall metal layer configured to receive an electrical current therethrough which causes the DW to move laterally. The mechanism also includes a second MTJ cell coupled to the first MTJ cell as well as an interconnect driver configured to provide electrical current to the first MTJ cell during a write operation.
Type:
Grant
Filed:
October 23, 2018
Date of Patent:
August 4, 2020
Assignee:
Purdue Research Foundation
Inventors:
Zubair Al Azim, Ankit Sharma, Kaushik Roy
Abstract: A semiconductor memory device includes: a first bit line; a second bit line connected to the first bit line via a first switch; a charge transfer section including: a first holding section connected to the second bit line, the first holding section being configured to hold a readout voltage from a memory section that stores data, and a second holding section connected to the first bit line, the second holding section being configured to hold a voltage generated due to transfer of charges between the first holding section and the second holding section, the charge transfer section being configured to transfer charges between the first holding section and the second holding section via the first bit line; and a comparison section configured to compare a voltage held in the second holding section with a reference voltage.
Abstract: Various example embodiments herein disclose a flip-flop including a master latch comprising one of: a plurality of P-type metal-oxide-semiconductor (PMOS) and a plurality of N-type metal-oxide-semiconductor (NMOS). A slave latch includes one of: a plurality of PMOS and a plurality of NMOS. An inverted clock signal input is communicatively connected with the master latch and the slave latch. The master latch includes a single pre-charge node. The single pre-charge node sets up a data capture path in the flip flop. Data is stored in the master latch and the slave latch via the pre-charge node.
Abstract: Disclosed are methods, systems and devices for operation of correlated electron switch (CES) devices. In one aspect, a CES device may be placed in any one of multiple impedance states in a write operation by controlling a current and a voltage applied to terminals of the non-volatile memory device. In one implementation, a CES device may be placed in a high impedance or insulative state, or two more distinguishable low impedance or conductive states.
Abstract: Examples herein disclose selecting a row of data among multiple rows of data for validation of a repair to the selected row of data. The examples here disclose validating the repair to the selected row of data.
Type:
Grant
Filed:
May 27, 2014
Date of Patent:
June 30, 2020
Assignee:
Hewlett Packard Enterprise Development LP
Inventors:
Melvin K. Benedict, Eric L. Pope, Lidia Warnes
Abstract: An electronic device applicable to an artificial neuron network. The electronic device includes a first circuit, a second circuit, and first to sixth wirings. The first circuit includes a first transistor, a second transistor, and a capacitor. The second circuit includes a third transistor. A gate of the third transistor is electrically connected to the third wiring. The capacitor capacitively couples the third wiring and the gate of the second transistor. The first circuit is capable of storing a weight as an analog value. The first transistor is typically an oxide semiconductor transistor.
Type:
Grant
Filed:
November 26, 2018
Date of Patent:
June 30, 2020
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: A read operation method of a nonvolatile memory includes selecting at least a first selection defence code from among a plurality of defence codes by using read voltage level determination information and read environment information, the read environment information including values respectively corresponding to a plurality of factors; determining a level of a read voltage for performing a read operation based on the first selection defence code; and performing the read operation by using the read voltage having the determined level.
Abstract: A memory device includes: at least one memory cell; a bit line connected to the at least one memory cell; a write controller; a write driver receiving a logic signal from an output terminal of the write controller, and driving the bit line based on the logic signal; a negative voltage generator generating a reference voltage for receipt by a ground terminal of the write driver; and a protector connected to one of a power terminal and the output terminal of the write controller. The protector is capable of releasing stress voltage of the write driver.