US 12,340,833 B2
Refresh control circuit, memory, and refresh control method
Liang Zhang, Hefei (CN)
Assigned to CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed by CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed on Jan. 20, 2023, as Appl. No. 18/157,558.
Application 18/157,558 is a continuation of application No. PCT/CN2022/099237, filed on Jun. 16, 2022.
Claims priority of application No. 202210579572.4 (CN), filed on May 25, 2022.
Prior Publication US 2023/0386549 A1, Nov. 30, 2023
Int. Cl. G11C 11/40 (2006.01); G11C 11/406 (2006.01)
CPC G11C 11/40615 (2013.01) 18 Claims
OG exemplary drawing
 
1. A refresh control circuit, applicable to a memory and comprising:
a processing circuit, configured to receive a refresh command signal, and perform pulse combination processing on the refresh command signal to obtain a refresh combined signal, wherein the refresh command signal has a plurality of pulses in a first time period and keeps a level state unchanged in a second time period, and the first time period and the second time period exist alternately;
a logic circuit, configured to receive the refresh command signal and the refresh combined signal, and perform logical operation processing on the refresh command signal and the refresh combined signal to obtain a target control signal, wherein the target control signal has different level states in the first time period and the second time period; and
a power supply circuit, configured to receive the target control signal, and determine whether to perform a power supply operation according to a level state of the target control signal, the power supply operation being configured to support execution of a refresh operation;
wherein the processing circuit is configured to control the refresh combined signal to be adjusted from a first state to a second state according to a first signal edge of the refresh command signal in the first time period, and control the refresh combined signal to be adjusted from the second state to the first state according to a last signal edge of the refresh command signal in the first time period.