US 11,940,932 B2
Memory device, storage module, host and operating methods for performing a refresh operation based on temperature information
Doo Hwan Oh, Hwaseong-si (KR); Seung-Hun Lee, Hwaseong-si (KR); Jin Hun Jeong, Suwon-si (KR); Chang Ho Yun, Seoul (KR); and Kyung-Hee Han, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 28, 2021, as Appl. No. 17/359,841.
Claims priority of application No. 10-2020-0148331 (KR), filed on Nov. 9, 2020.
Prior Publication US 2022/0147277 A1, May 12, 2022
Int. Cl. G06F 13/16 (2006.01); G11C 11/406 (2006.01)
CPC G06F 13/1636 (2013.01) [G11C 11/40626 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An operating method of a storage device, comprising:
receiving a setting command including a first bit corresponding to a temperature range and a second bit indicating a refresh rate corresponding to the temperature range when all banks are in an idle state;
adjusting a number of rows of a volatile memory device to be refreshed based on a refresh command of a host device according to the refresh rate during an update delay time; and
after the update delay time has elapsed, receiving a non-setting command,
wherein the refresh command is determined based on a highest temperature or a lowest temperature among temperatures of a plurality of volatile memory devices in the storage device,
wherein the plurality of volatile memory devices are classified into groups based on current temperature information, and previous temperature information corresponding to the plurality of first and second volatile memory devices.