Semiconductor memory device having a refresh cycle changing...

Semiconductor memory device having a refresh function and a meth

Semiconductor memory device having a self-refresh operation

Semiconductor memory device having a self-refreshing control cir

Semiconductor memory device having an improved refresh operation

Semiconductor memory device having complete hidden refresh...

Semiconductor memory device having complete hidden refresh...

Semiconductor memory device having internal address converting f

Semiconductor memory device having internal address converting f

Semiconductor memory device having low power self refresh and bu

Semiconductor memory device having low power self refresh and bu

Semiconductor memory device having mode storing one bit data...

Semiconductor memory device having optimum refresh cycle...

Semiconductor memory device having reduced power...

Semiconductor memory device having refresh circuit and word...

Semiconductor memory device having refresh circuits

Semiconductor memory device having refresh mode and method...

Semiconductor memory device having refreshing function

Semiconductor memory device having regions with independent...

Semiconductor memory device having row path control circuit...