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公开(公告)号:US12125522B2
公开(公告)日:2024-10-22
申请号:US17955978
申请日:2022-09-29
发明人: Kyeong Tae Nam , Young Hun Seo , Mi Ji Jang
IPC分类号: G11C11/40 , G11C11/4074 , G11C11/4091 , G11C11/4094
CPC分类号: G11C11/4091 , G11C11/4074 , G11C11/4094
摘要: A memory device is provided. The memory device comprises a memory cell array connected to a first bit line and a complementary bit line, a first bit line sense amplifier configured to sense, amplify and the first bit line signal output a first bit line signal and the complimentary bit signal output on a complementary bit line signal output on the first bit line and the complementary bit line, a charge transfer transistor connected to the first bit line sense amplifier and configured to be gated by a charge transfer signal of a first node, an offset transistor configured to connect the first node and a second node based on an offset removal signal and a pre-charging transistor connected between the second node and a pre-charging voltage line and the pre-charging transistor being configured to pre-charge the first bit line or the complementary bit line based on an equalizing signal.
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公开(公告)号:US12108589B2
公开(公告)日:2024-10-01
申请号:US17741914
申请日:2022-05-11
发明人: Koji Sakui , Nozomu Harada
IPC分类号: G11C11/40 , G11C11/404 , G11C11/4096 , H10B12/00
CPC分类号: H10B12/20 , G11C11/404 , G11C11/4096
摘要: A memory device includes pages, each being composed of a plurality of memory cells arrayed on a substrate in row form. The memory device controls voltages to be applied to a first gate conductor layer, a second gate conductor layer, a first impurity region, and a second impurity region of each of the memory cells included in the pages to perform a page write operation of holding a hole group formed by an impact ionization phenomenon or a gate induced drain leakage current in a channel semiconductor layer, and controls voltages to be applied to the first gate conductor layer, the second gate conductor layer, the third gate conductor layer, the fourth gate conductor layer, the first impurity region, and the second impurity region to perform a page erase operation of removing the hole group out of the channel semiconductor layer. The first impurity layer of each of the memory cells is connected to a source line, the second impurity region is connected to a bit line, one of the first gate conductor layer and the second gate conductor layer is connected to a word line, and the other is connected to a first driving control line. The bit line is connected to a sense amplifier circuit via a switching circuit. When in a page read operation, the memory device reads page data in a memory cell group selected by the word line to the bit line, and performs charge sharing between the bit line and a charge sharing node of the switching circuit opposite to the bit line to accelerate a read determination by the sense amplifier circuit.
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公开(公告)号:US12106823B2
公开(公告)日:2024-10-01
申请号:US17914845
申请日:2021-04-06
IPC分类号: G11C7/16 , G11C11/40 , G11C27/02 , H01L29/786 , G11C11/54
CPC分类号: G11C7/16 , G11C11/40 , G11C27/02 , H01L29/786 , G11C11/54
摘要: A semiconductor device capable of holding analog data is provided. Two holding circuits, two bootstrap circuits, and one source follower circuit are formed with use of four transistors and two capacitors. A memory node is provided in each of the two holding circuits; a data potential is written to one of the memory nodes and a reference potential is written to the other of the memory nodes. At the time of data reading, the potential of the one memory node is increased in one of the bootstrap circuits, and the potential of the other memory node is increased in the other of the bootstrap circuits. A potential difference between the two memory nodes is output by the source follower circuit. With use of the source follower circuit, the output impedance can be reduced.
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公开(公告)号:US12106794B2
公开(公告)日:2024-10-01
申请号:US18330527
申请日:2023-06-07
发明人: Dae-Sik Moon , Gil-Hoon Cha , Ki-Seok Oh , Chang-Kyo Lee , Yeon-Kyu Choi , Jung-Hwan Choi , Kyung-Soo Ha , Seok-Hun Hyun
IPC分类号: G11C11/40 , G06F3/06 , G11C7/22 , G11C11/4076 , G11C11/409
CPC分类号: G11C11/4076 , G06F3/0604 , G06F3/0653 , G06F3/0659 , G06F3/0673 , G11C7/222 , G11C11/409
摘要: A memory device includes a clock receiver configured to receive, from a memory controller, a write clock that is used to receive write data during a data write operation, a duty monitor configured to generate first monitoring information by monitoring a duty of the write clock, and a duty adjuster configured to adjust the duty of the write clock in response to a duty control signal and output an adjusted write clock. The memory device provides the first monitoring information to the memory controller, and receives the duty control signal, generated using the first monitoring information, from the memory controller.
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公开(公告)号:US12094522B2
公开(公告)日:2024-09-17
申请号:US17936785
申请日:2022-09-29
发明人: Akeno Ito , Mamoru Nishizaki
IPC分类号: G11C11/40 , G11C11/4091 , G11C11/4096
CPC分类号: G11C11/4091 , G11C11/4096
摘要: An apparatus that includes: a plurality of first data amplifiers arranged in line in a first direction; a plurality of first read data buses each coupled to a corresponding one of the plurality of first data amplifiers, the plurality of first read data buses having different lengths one another; and a plurality of first write data buses each coupled to the corresponding one of the plurality of first data amplifiers, the plurality of first write data buses having different lengths one another. The plurality of first read data buses and the plurality of first write data buses are alternately arranged in parallel in a second direction vertical to the first direction. The plurality of first read data buses are arranged in longest order and the plurality of first write data buses are arranged in shortest order.
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公开(公告)号:US12094518B2
公开(公告)日:2024-09-17
申请号:US17988760
申请日:2022-11-17
发明人: Teng-Hao Yeh , Hang-Ting Lue , Chih-Wei Hu
IPC分类号: G11C11/40 , G11C11/4074 , G11C11/408
CPC分类号: G11C11/4085 , G11C11/4074 , G11C11/4087
摘要: A memory device, such as three dimension AND Flash memory, including a plurality of word line decoding circuit areas, a plurality of common power rails and a plurality of power drivers is provided. The word line decoding circuit areas are arranged in an array, and form a plurality of isolation areas, wherein each of the isolation areas is disposed between two adjacent word line decoding circuit areas. Each of the common power rails is disposed along the isolation areas. The power drivers respectively correspond to the word line decoding circuit areas. Each of the power drivers is disposed between each of the power driving circuit areas and each of the corresponding isolation areas, wherein each of the power drivers is configured to provide a common power to the word line decoding circuit areas.
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公开(公告)号:US12087346B2
公开(公告)日:2024-09-10
申请号:US17750775
申请日:2022-05-23
发明人: Seung Ki Hong , Seung Jun Lee
IPC分类号: G11C11/40 , G11C11/406 , G11C11/4093
CPC分类号: G11C11/40618 , G11C11/40611 , G11C11/40615 , G11C11/4093
摘要: A memory device includes a memory cell array, a row select circuit, a refresh controller and a memory control logic. The memory cell array includes memory cells arranged in rows and columns. The row select circuit is connected to the rows. The refresh controller controls the row select circuit to apply a refresh operating voltage to one or more rows. The memory control logic decodes a command received from a memory controller and outputs a refresh command and external refresh address information. The refresh controller controls the row select circuit to perform one of an external refresh operation and an internal refresh operation, based on the refresh command that is output from the memory controller and based on whether a first row-hammering row address of the internal refresh operation is identical with a second row-hammering row address of the external refresh operation.
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公开(公告)号:US12027196B2
公开(公告)日:2024-07-02
申请号:US17856909
申请日:2022-07-01
申请人: KIOXIA CORPORATION
IPC分类号: G11C11/40 , G11C11/4072 , G11C11/4074 , G11C11/4096
CPC分类号: G11C11/4074 , G11C11/4072 , G11C11/4096
摘要: A memory system includes: a first nonvolatile memory; a second volatile memory; a controller; a power control circuit configured to perform control such that a first voltage is applied to the first memory, the second memory, and the controller based on first power supplied from an external power supply; and a power storage device configured to supply second power to the power control circuit while the first power from the external power supply is interrupted. While the first power supplied from outside is interrupted, the power control circuit applies a second voltage based on the second power supplied from the power storage device to the first memory, the second memory, and the controller. The power control circuit stops the application of the second voltage to the second memory after the data is read from the second memory and before the data is written into the first memory.
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公开(公告)号:US11996133B2
公开(公告)日:2024-05-28
申请号:US17618993
申请日:2020-06-09
发明人: Fumika Akasawa , Munehiro Kozuma
IPC分类号: G11C11/40 , G11C11/405 , H01L27/12 , H01L29/786 , H10B12/00
CPC分类号: G11C11/405 , H01L27/1207 , H01L27/1225 , H01L27/1255 , H01L29/78648 , H01L29/7869 , H10B12/00
摘要: Since power source voltages are different depending on circuits used for devices, a circuit for outputting at least two or more power sources is additionally prepared. An object is to unify outputs of the power source voltages. A transistor using an oxide semiconductor is provided in such a manner that electrical charge is retained in a node where the transistor and a capacitor are electrically connected to each other, a reset signal is applied to a gate of the transistor to switch the states of the transistor from off to on, and the node is reset when the transistor is on. A circuit configuration that generates and utilizes a potential higher than or equal to a potential of a single power source can be achieved.
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公开(公告)号:US11955158B2
公开(公告)日:2024-04-09
申请号:US18064773
申请日:2022-12-12
发明人: Jason M. Brown , Daniel B. Penney
IPC分类号: G11C11/40 , G06F11/30 , G11C7/10 , G11C11/406 , G11C11/4076 , G11C16/34 , G11C7/00
CPC分类号: G11C11/40611 , G06F11/3037 , G11C7/1039 , G11C11/4076 , G11C16/3431 , G11C16/349 , G06F2201/88 , G11C7/00 , G11C2211/406
摘要: Embodiments of the disclosure are drawn to apparatuses and methods for scheduling targeted refreshes in a memory device. Memory cells in a memory device may be volatile and may need to be periodically refreshed as part of an auto-refresh operation. In addition, certain rows may experience faster degradation, and may need to undergo targeted refresh operations, where a specific targeted refresh address is provided and refreshed. The rate at which targeted refresh operations need to occur may be based on the rate at which memory cells are accessed. The memory device may monitor accesses to a bank of the memory, and may use a count of the accesses to determine if an auto-refresh address or a targeted refresh address will be refreshed.
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