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

Claim 0:
1. A memory test method, comprising:
providing a to-be-tested memory, wherein the to-be-tested memory comprises a plurality of memory cells;
alternately writing a first write value and a second write value into a memory cell of the memory cells at a preset frequency, wherein the first write value is different from the second write value;
writing a test write value into the memory cell; and
judging whether a data read from the memory cell is the test write value, and determining 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 alternately writing a first write value and a second write value into a memory cell of the memory cells at a preset frequency comprises:
performing the following first cyclic step for a plurality of times:
writing the first write value into the memory cell;
writing the second write value into the memory cell, after delaying a preset time from a completion of writing of the first write value; and
performing a next first cyclic step after delaying a preset time from a completion of writing of the second write value.