Semiconductor storage device and method of controlling the same
AssigneeKioxia Corporation
InventorsAkio Sugahara, Yoshikazu Harada, Shoichiro Hashimoto
Life of this patent
Estimating the term…
Abstract
In one embodiment, a semiconductor storage device includes a plurality of memory chips, at least one of the memory chips including a first controller configured to be shifted to a wait state of generating a peak current, before generating the peak current in accordance with a command. The device further includes a control chip including a second controller configured to search a state of the first controller and control, based on a result of searching the state of the first controller, whether or not to issue a cancel instruction for the wait state to the first controller that has been shifted to the wait state.
Claims20
A method of controlling a semiconductor storage device including a plurality of memory chips and a control chip, the method comprising:
- receiving a first command to a first memory chip in the memory chips;
- performing a first operation in accordance with the first command;
- receiving a second command to a second memory chip in the memory chips during the first operation;
- starting a second operation in accordance with the second command;
- shifting the second memory chip to a first wait state during the second operation;
- restarting the second operation;
- and
- controlling a total peak current generated from the memory chips by sequentially patrolling the memory chips.
Dependencies are inferred from the claim text.