Patent ID: 11869570
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A refresh counting method, comprising:
receiving a refresh command; wherein the refresh command generates at least two refresh pulse signals;
generating a first carry signal according to each of the refresh pulse signals generated by the refresh command;
performing signal inversion according to the first carry signal, and generating a first output signal;
generating a second carry signal according to a last refresh pulse signal generated by the refresh command;
counting the refresh command according to the second carry signal, and generating a second output signal; and
outputting a third output signal according to the first output signal and the second output signal, the third output signal representing a count of the refresh pulse signals;
wherein the refresh command is an all bank refresh command or a per bank refresh command;
each of the refresh pulse signals generated by the all bank refresh command is used to refresh all banks simultaneously;
each of the refresh pulse signals generated by the per bank refresh command is used to refresh all banks one by one before repeating refresh of any bank; and
the counting the refresh command according to the second carry signal comprises:
for each of the per bank refresh commands, when a bank counter counts to a last bank, generating the second carry signal according to a last refresh pulse signal generated by the per bank refresh command of the last bank.