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Apparatus for supplying power supply voltage to semiconductor chip including volatile memory cell

A technology of volatile memory and memory unit, which is applied in the direction of static memory, digital memory information, information storage, etc., and can solve problems such as the volatility of memory units

Pending Publication Date: 2020-02-28
MICRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, because the memory cells of DRAM are volatile, it is necessary to restore the information held in the memory cells by periodically performing a refresh operation even when the DRAM is in standby mode

Method used

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  • Apparatus for supplying power supply voltage to semiconductor chip including volatile memory cell
  • Apparatus for supplying power supply voltage to semiconductor chip including volatile memory cell
  • Apparatus for supplying power supply voltage to semiconductor chip including volatile memory cell

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Embodiment Construction

[0011] Various embodiments of the present invention will be described below with specific reference to the accompanying drawings. The following detailed description refers to the accompanying drawings that show, by way of illustration, certain aspects and embodiments of the invention in which it may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. The various embodiments disclosed herein are not necessarily mutually exclusive, as some disclosed embodiments can be combined with one or more other disclosed embodiments to form new embodiments.

[0012] figure 1 The shown memory system includes a DRAM 100 ; a power management IC 200 that supplies a power supply voltage to the DRAM 100 ; and a controller 300 that controls t...

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Abstract

The application relates to an apparatus for supplying power supply voltage to a semiconductor chip including a volatile memory cell. Disclosed herein is an apparatus that includes a first semiconductor chip including a memory cell array having a volatile memory cell and an access control circuit configured to perform a refresh operation on the volatile memory cell, and a second semiconductor chipincluding a power generator configured to supply a first power supply voltage to the first semiconductor chip. The access control circuit is configured to activate a first enable signal during the refresh operation. The second semiconductor chip is configured to change a capability of the power generator based on the first enable signal.

Description

technical field [0001] The present invention relates to a memory device, and more particularly, to a memory device such as a DRAM that operates with a power supply voltage supplied from a power management IC. Background technique [0002] A memory device such as a DRAM is operated with a power supply voltage supplied from the power management IC. The power management IC minimizes power consumption by changing the supply capability of the power supply voltage according to the current operating state of the DRAM. For example, during a period in which the DRAM is performing a read operation or a write operation, the supply capability of the power supply voltage of the power management IC is set to be relatively large, and when the DRAM is in the standby mode, the power management IC's The supply capability of the power supply voltage is set to be relatively small. [0003] However, since the memory cells of the DRAM are volatile, it is necessary to restore information held in...

Claims

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Application Information

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IPC IPC(8): G11C5/14G11C11/4074
CPCG11C5/147G11C11/4074G11C2211/4067G11C11/40615G11C11/4096G11C11/4093
Inventor 何源近藤力外山大吾
Owner MICRON TECH INC