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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