Semiconductor storage device
AssigneeToshiba Memory Corporation
InventorHiroyuki Kaga
Life of this patent
Estimating the term…
Abstract
A semiconductor storage device according to one embodiment includes a memory cell. A first latch is selectively coupled to the memory cell. A first bus coupled to the first latch and a second latch. A first charger charges the first bus. A second bus transmits a signal of the same value both when first data is output and when second data is output from the first or second latch A second charger raises a voltage of the second bus from a first value to a second value. A controller whose input is coupled to the second bus controls the first charger to stop charging of the first bus based on the voltage of the second bus having reached the second value.
Claims14
A semiconductor storage device comprising:
- a memory cell;
- a first latch selectively coupled to the memory cell;
- a second latch;
- a first bus coupled to the first and second latches;
- a first charger which charges the first bus;
- a second bus which transmits a signal of the same value both when first data is output and when second data is output from the first or second latch;
- a third latch and a fourth latch which are coupled to the second bus;
- a second charger which raises a voltage of the second bus from a first value to a second value;
- and
- a controller whose input is coupled to the second bus and which controls the first charger to stop charging of the first bus based on the voltage of the second bus having reached the second value, the controller controlling data transfer between the first and second latches and stopping the data transfer based on the voltage of the second bus having decreased from the second value to a third value, the controller transferring a signal of a low level between the third and fourth latches during the data transfer between the first and second latches both when the first data is transferred and when the second data is transferred.
Dependencies are inferred from the claim text.