Patent ID: 11862233
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for detecting a mismatch of a sense amplifier, comprising:
acquiring a test data set;
converting the test data set into a first voltage difference between a bit line and a reference bit line, and inputting the first voltage difference to a sense amplifier in which a positive channel-metal-oxide-semiconductor (PMOS) transistor or a negative channel-metal-oxide-semiconductor (NMOS) transistor is delayed to be switched on for precharge for a preset time, with the preset time being less than a standard precharge command period;
amplifying a second voltage difference between the bit line and the reference bit line obtained after the precharge by the sense amplifier to obtain a voltage difference to be tested; and
comparing the voltage difference to be tested with a preset voltage difference to be tested, and determining that a mismatch occurs in the sense amplifier when the voltage difference to be tested and the preset voltage difference to be tested are in a same direction.