Invention Grant
- Patent Title: Temperature-dependent refresh circuit configured to increase or decrease a count value of a refresh timer according to a self-refresh signal
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Application No.: US15245067Application Date: 2016-08-23
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Publication No.: US10354714B2Publication Date: 2019-07-16
- Inventor: Donald M. Morgan
- Applicant: MICRON TECHNOLOGY, INC.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Dorsey & Whitney LLP
- Main IPC: G11C11/406
- IPC: G11C11/406 ; G11C11/4076 ; G11C7/04

Abstract:
Systems and apparatuses for memory devices utilizing a continuous self-refresh timer are provided. An example apparatus includes a self-refresh timer configured to generate a signal periodically, wherein a period of the signal is based on a self-refresh refresh time interval, wherein the self-refresh refresh time interval is dependent on temperature information. The apparatus may further include a memory bank comprising at least a first subarray and in communication with a first subarray refresh circuit, which may include a first refresh status counter. The first refresh status counter may be in communication with the self-refresh timer and configured to receive the signal from the self-refresh timer, change a count value of the first refresh status counter in a first direction each time the signal is received, and change the count value of the first refresh status counter in a second direction each time the first subarray is refreshed.
Public/Granted literature
Information query