Status indication in a system having a plurality of memory devices
AssigneeMosaid Technologies Incorporated
InventorsRoland Schuetz, HakJune Oh, Hong Beom Pyeon
Life of this patent
Estimating the term…
Abstract
Status indication in a system having a plurality of memory devices is disclosed. A memory device in the system includes a plurality of data pins for connection to a data bus. The memory device also includes a status pin for connection to a status line that is independent from the data bus. The memory device also includes first circuitry for generating, upon completion of a memory operation having a first duration, a strobe pulse of a second duration much shorter than the first duration. The strobe pulse provides an indication of the completion of the memory operation. The memory device also includes second circuitry for outputting the strobe pulse onto the status line via the status pin.
Claims26
A system comprising:
- a plurality of devices, each of the plurality of devices including a status input pin, a status output pin, and separate data input and output pins, and the plurality of devices including:
- a) a plurality of semiconductor memory devices including at least first and last memory devices;
- and
- b) a controller device for communicating with the semiconductor memory devices, and
- the first memory device having a status input pin connected to a status output pin of the controller device, a status output pin of the first memory device being connected to a status input pin of either an intervening memory device or the last memory device, the status input pin of the last memory device being connected to a status output pin of either another intervening memory device, the intervening memory device or the first memory device, and a status output pin of the last memory device being connected to a status input pin of the controller device so that a status ring is formed, and each of the plurality of devices being on the status ring, and the status ring providing a status communications path that is independent of any data communications path between any of the semiconductor memory devices and the controller device.
The system of claim L wherein at least one of the semiconductor memory devices is configured to output a status packet onto the status ring to provide indication of a status change within the at least one of the semiconductor memory devices.
A memory device comprising:
- a plurality of data pins for connection to a data bus;
- a status pin for connection to a status line that is independent from the data bus;
- first circuitry for generating, upon completion of a memory operation having a first duration, a strobe pulse of a second duration much shorter than the first duration, and the strobe pulse providing an indication of the completion of the memory operation;
- and
- second circuitry for outputting the strobe pulse onto the status line via the status pin.
A method comprising:
- providing a flash memory device comprising a plurality of data pins and a status pin, the plurality of data pins connected to a data bus, and the status pin connected to a status line that is independent from the data bus;
- carrying out, within the flash memory device, a memory operation having a first duration;
- generating, upon completion of the memory operation, a strobe pulse of a second duration much shorter than the first duration, and the strobe pulse providing an indication of the completion of the memory operation;
- and
- outputting the strobe pulse onto the status line via the status pin.
A memory device comprising:
- at least one data input pin;
- at least one data output pin;
- a status input pin configured for connection to a status output pin of either another memory device or a controller device;
- and
- a status output pin configured for connection to a status input pin of either yet another memory device or the controller device, and
- wherein the status input pin of the memory device, the status output pin of the memory device, the at least one data input pin and the at least one data output pin are each physically distinct pins from one another.
Dependencies are inferred from the claim text.