Memory system including an interface circuit connecting a controller and memory

    公开(公告)号:US12237046B2

    公开(公告)日:2025-02-25

    申请号:US17951567

    申请日:2022-09-23

    Abstract: A memory system includes a plurality of memory devices, each connected to internal channels respectively including an internal data channel and an internal control channel, and each configured to perform communication based on a first interface protocol, a controller connected to an external channel including an external data channel and an external control channel and configured to perform communication based on a second interface protocol, and an interface circuit connecting the external channel to each of the internal channels. The interface circuit is configured to perform channel conversion by serializing a parallel data signal received from the controller through the external data channel and outputting the serialized signal to the internal control channel included in a first one of the internal channels, or parallelizing a signal received through the external control channel and outputting the parallelized signal to the internal data channel included in the first one of the internal channels.

    SEMICONDUCTOR DEVICE AND MEMORY SYSTEM INCLUDING THE SAME

    公开(公告)号:US20230162766A1

    公开(公告)日:2023-05-25

    申请号:US17951567

    申请日:2022-09-23

    CPC classification number: G11C7/1087 G11C7/109 G11C7/1093 G11C7/222

    Abstract: A memory system includes a plurality of memory devices, each connected to internal channels respectively including an internal data channel and an internal control channel, and each configured to perform communication based on a first interface protocol, a controller connected to an external channel including an external data channel and an external control channel and configured to perform communication based on a second interface protocol, and an interface circuit connecting the external channel to each of the internal channels. The interface circuit is configured to perform channel conversion by serializing a parallel data signal received from the controller through the external data channel and outputting the serialized signal to the internal control channel included in a first one of the internal channels, or parallelizing a signal received through the external control channel and outputting the parallelized signal to the internal data channel included in the first one of the internal channels.

    Impedance calibration circuit and method of calibrating impedance in memory device

    公开(公告)号:US11367471B2

    公开(公告)日:2022-06-21

    申请号:US17352527

    申请日:2021-06-21

    Abstract: An impedance calibration circuit includes a first variable impedance, a second variable impedance, a third variable impedance. The first variable impedance is connected to a ZQ terminal. A first control circuit performs a first impedance calibration on the first variable impedance based on an output signal from an output of a first comparator. A second control circuit performs a second impedance calibration on the third variable impedance based on an output signal from an output of a second comparator. A first switch connects an input of the first comparator to one of the ZQ terminal and the first node. A second switch connects the output of the first comparator to one of the first and second control circuits. A third switch connects an output of the first switch to one of first and second input terminals of the first comparator and connects the reference voltage to the other.

    MEMORY DEVICE INCLUDING MULTIPLE MEMORY CHIPS AND DATA SIGNAL LINES AND A METHOD OF OPERATING THE MEMORY DEVICE

    公开(公告)号:US20220101894A1

    公开(公告)日:2022-03-31

    申请号:US17410210

    申请日:2021-08-24

    Abstract: An operating method of a memory device includes selecting a receiver from a plurality of receivers of each memory chip of a plurality of memory chips included in the memory device as a first receiver. The plurality of memory chips share a plurality of data signal lines, each memory chip includes a plurality of on-die termination (ODT) resistors, and the plurality of ODT resistors are respectively connected to the plurality of receivers of each memory chip. The method further includes setting each ODT resistor which is connected to a first receiver to a first resistance value, setting ODT resistors which are connected to receivers which are not first receivers to a second resistance value, and setting an amplification strength of an equalizer circuit of each first receiver by performing training operations. Each data signal line of the plurality of data signal lines is respectively connected to a first receiver.

    Multi-chip package with reduced calibration time and ZQ calibration method thereof

    公开(公告)号:US11217283B2

    公开(公告)日:2022-01-04

    申请号:US17012845

    申请日:2020-09-04

    Abstract: A multi-chip package with reduced calibration time and an impedance control (ZQ) calibration method thereof are provided. A master chip of the multi-chip package performs a first ZQ calibration operation by using a ZQ resistor, and then, the other slave chips simultaneously perform second ZQ calibration operations with respect to data input/output (DQ) pads of the slave chips by using a termination resistance value of a DQ pad of the master chip on the basis of a one-to-one correspondence relationship with the DQ pad of the master chip. The multi-chip package completes ZQ calibration by performing two ZQ calibration operations, thereby decreasing a ZQ calibration time.

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