US Patent 10504597 Semiconductor memory device

A semiconductor memory device according to an embodiment includes: first to 32nd memory cells; first to 16th bit lines connected to the first to 16th memory cells; 17th to 32nd bit lines connected to the 17th to 32nd memory cells; a first word line connected to gates of the first to 32nd memory cells; first to 16th sense amplifiers configured to determine data read from the first to 16th memory cells at a first timing; and 17th to 32nd sense amplifiers configured to determine data read from the 17th to 32nd memory cells at a second timing. The first timing is different from the second timing.