公开(公告)号：US11809838B2

公开(公告)日：2023-11-07

申请号：US17365034

申请日：2021-07-01

Applicant: MACRONIX INTERNATIONAL CO., LTD.

Inventor： Han-Wen Hu ,  Yung-Chun Lee ,  Bo-Rong Lin ,  Huai-Mu Wang

IPC: G06F7/544 ,  G11C7/06

CPC classification number: G06F7/5443 ,  G11C7/06

Abstract: A memory device and an operation method thereof are provided. The memory device includes: a memory array including a plurality of memory cells for storing a plurality of weights; a multiplication circuit coupled to the memory array, for performing bitwise multiplication on a plurality of input data and the weights to generate a plurality of multiplication results; a counting unit coupled to the multiplication circuit, for performing bitwise counting on the multiplication results to generate a MAC (multiplication and accumulation) operation result.

公开(公告)号：US12106070B2

公开(公告)日：2024-10-01

申请号：US17375024

申请日：2021-07-14

Applicant: MACRONIX INTERNATIONAL CO., LTD.

Inventor： Han-Wen Hu ,  Yung-Chun Lee ,  Bo-Rong Lin ,  Huai-Mu Wang

IPC: G06J1/00 ,  G06F7/544

CPC classification number: G06F7/5443 ,  G06J1/00 ,  Y02D10/00

Abstract: A memory device and an operation method thereof are provided. The memory device includes: a memory array including a plurality of memory cells for storing a plurality of weights; a multiplication circuit for performing bitwise multiplication on a plurality of input data and the weights to generate a plurality of multiplication results, wherein in performing bitwise multiplication, the memory cells generate a plurality of memory cell currents; a digital accumulating circuit for performing a digital accumulating on the multiplication results; an analog accumulating circuit for performing an analog accumulating on the memory cell currents to generate a first MAC operation result; and a decision unit for deciding whether to perform the analog accumulating, the digital accumulating or a hybrid accumulating, wherein in performing the hybrid accumulating, whether the digital accumulating circuit is triggered is based on the first MAC operation result.

公开(公告)号：US20220076762A1

公开(公告)日：2022-03-10

申请号：US17321933

申请日：2021-05-17

Applicant: Macronix International Co., Ltd.

Inventor： Yung-Chun Lee ,  Yu-Ming Huang ,  Han-Wen Hu

IPC: G11C16/26 ,  G11C16/08 ,  G11C16/34

Abstract: Methods, devices, and systems for determining read voltages for memory systems are provided. In one aspect, a memory device includes an array of memory cells, an accumulating circuit, and a controller. Each of the memory cells is coupled to a corresponding word line of multiple word lines and a corresponding bit line of multiple bit lines. The accumulating circuit is configured to: when data stored in a page is read out by applying each of a plurality of read voltages on a word line corresponding to the page, accumulate read-out signals from multiple memory cells in the page to generate a respective output value that corresponds to the accumulated read-out signals for the read voltage. The controller is configured to determine a calibrated read voltage for the page based on the respective output values and the plurality of read voltages.

公开(公告)号：US11631467B2

公开(公告)日：2023-04-18

申请号：US17321933

申请日：2021-05-17

Applicant: Macronix International Co., Ltd.

Inventor： Yung-Chun Lee ,  Yu-Ming Huang ,  Han-Wen Hu

IPC: G11C16/26 ,  G11C16/34 ,  G11C16/08

Abstract: Methods, devices, and systems for determining read voltages for memory systems are provided. In one aspect, a memory device includes an array of memory cells, an accumulating circuit, and a controller. Each of the memory cells is coupled to a corresponding word line of multiple word lines and a corresponding bit line of multiple bit lines. The accumulating circuit is configured to: when data stored in a page is read out by applying each of a plurality of read voltages on a word line corresponding to the page, accumulate read-out signals from multiple memory cells in the page to generate a respective output value that corresponds to the accumulated read-out signals for the read voltage. The controller is configured to determine a calibrated read voltage for the page based on the respective output values and the plurality of read voltages.