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Apparatus, memory device and method for storing parameter codes for asymmetric on-die-termination

專利號
US11888476B2
公開日期
2024-01-30
申請人
SAMSUNG ELECTRONICS CO., LTD.(KR Suwon-si)
發(fā)明人
Daehyun Kwon; Hyejung Kwon; Hyeran Kim; Chisung Oh
IPC分類
H03K19/017; H03K19/00; H03K19/17736; H03K19/17772
技術領域
odt,pull,circuit,signal,device,may,dq,second,line,data
地域: Suwon-si

摘要

An apparatus, a memory device, and a method for storing parameter codes with respect to asymmetric on-die-termination (ODT) are provided. The apparatus is connected to an external device via a signal line, and includes: an on-die termination (ODT) circuit set in a first ODT state; a plurality of signal pins, each of which is connected to the signal line; and an ODT control circuit configured to: identify whether a second ODT state of the external device corresponds to the first ODT state, and based on the apparatus being an asymmetric ODT in which the first ODT state and the second ODT state are different, provide an asymmetric ODT parameter code to the external device, and disable the ODT circuit when a signal is not transmitted through the signal line.

說明書

The second device 120 may be implemented as a volatile memory device. The volatile memory device may be implemented as random access memory (RAM), dynamic RAM (DRAM), or static RAM (SRAM), but is not limited thereto. For example, the second device 120 may include double data rate synchronous dynamic random access memory (DDR SDRAM), low power double data rate (LPDDR), SDRAM, graphics double data rate (GDDR), SDRAM, Rambus dynamic random access memory (RDRAM), etc. Alternatively, the second device 120 may be implemented as a high bandwidth memory (HBM).

The second device 120 may be implemented as a nonvolatile memory device. For example, the second device 120 may be implemented as a resistive memory such as phase change RAM (PRAM), magnetic RAM (MRAM), resistive RAM (RRAM), etc.

A signal may be transmitted between the first device 110 and the second device 120 through a signal line 130. For the sake of brevity of the drawing, although it is illustrated that the signal is transmitted through one signal line between the first device 110 and the second device 120, the signal may be actually transmitted through a plurality of signal lines or a bus. The signal line(s) 130 between the first device 110 and the second device 120 may be connected through connectors. The connectors may be implemented as pins, balls, signal lines, or other hardware components.

權利要求

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