Method for triggering a delay-locked loop (DLL) update operation or an impedance calibration operation in a dynamic random access memory device

1. A method for triggering an adjustment operation in a dynamic random access memory device, the method comprising:

receiving a refresh command;

generating an execute signal;

counting the execute signal to provide a count value;

refreshing a memory array based on the count value; and

triggering the adjustment operation when the count value reaches a predetermined value.

2. The method as claimed in claim 1 , wherein the count value selects a word line in the memory array to be refreshed.

3. The method as claimed in claim 1 , wherein the memory array is not refreshed when the count value reaches the predetermined value.

4. The method as claimed in claim 1 , wherein the memory array is refreshed a plurality of times for each time the adjustment operation is triggered.

5. The method as claimed in claim 4 , wherein the plurality of times is 32 times.

6. The method as claimed in claim 1 , wherein the predetermined value is 0.

7. The method as claimed in claim 1 , wherein the adjustment operation is a DLL (Delay-Locked Loop) update operation.

8. The method as claimed in claim 1 , wherein the adjustment operation is a ZQ calibration operation.

9. The method as claimed in claim 1 , further comprising setting a mode register to enable the adjustment operation.

10. The method as claimed in claim 1 , further comprising setting a mode register to select the adjustment operation.

11. The method as claimed in claim 10 , wherein the mode register selects one or both of a DLL (Delay-Locked Loop) update operation and a ZQ calibration operation.