Patent ID: 11862276
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A memory test apparatus, comprising:
a test circuit, configured to alternately write a first write value and a second write value into a memory cell of a to-be-tested memory at a preset frequency, wherein the first write value is different from the second write value;
a write circuit, configured to write a test write value into the memory cell;
a read circuit, configured to read a data from the memory cell; and
a processor, configured to judge whether the data read from the memory cell is the test write value and determine that a capacitance-frequency characteristic of the memory cell is abnormal at the preset frequency when the data is not the test write value;
wherein the test circuit comprises:
a write sub-circuit, configured to write the first write value into the memory cell; and
a timer, configured to control the write sub-circuit to write the second write value into the memory cell, after delaying a preset time from a completion of writing of the first write value; and further configured to control the write sub-circuit to write the first write value into the memory cell again, after delaying a preset time from a completion of writing of the second write value.