US 12,354,639 B2
Method and system for refreshing memory of a portable computing device
Pranav Agrawal, Hyderabad (IN); Akash Suthar, Sirohi (IN); Aman Chhetry, Hazaribagh (IN); and Kunal Desai, Bangalore (IN)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 18/249,925
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
PCT Filed Oct. 20, 2021, PCT No. PCT/US2021/055863
§ 371(c)(1), (2) Date Apr. 20, 2023,
PCT Pub. No. WO2022/108700, PCT Pub. Date May 27, 2022.
Claims priority of application No. 202041050957 (IN), filed on Nov. 23, 2020.
Prior Publication US 2023/0386551 A1, Nov. 30, 2023
Int. Cl. G11C 7/00 (2006.01); G11C 11/406 (2006.01)
CPC G11C 11/40618 (2013.01) [G11C 11/40615 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method for refreshing memory in a computing device having asymmetrical memory ranks of different sizes, comprising:
receiving a memory refresh request;
initiating a linear only refresh of one memory rank based on the memory refresh request if a start memory address and an end memory address exceed a threshold;
initiating a linear with interleave memory refresh of the asymmetrical memory ranks if the start memory address is less than the threshold and if the end memory address is greater than the threshold; and
initiating an interleave only memory refresh of the asymmetrical memory ranks if the start memory address and end memory address are both less than the threshold.