Memory device with multiple-bit data pre-fetch function

Details Memory device with multiple-bit data pre-fetch function Memory device with multiple-bit data pre-fetch function

1999-08-02

2000-12-26

Hoang, Huan

Static information storage and retrieval

Read/write circuit

Bad bit

365233, 365194, G11C 700

Patent

active

061669733

ABSTRACT:
The present invention is a memory device having a multiple-bit data pre-fetch function wherein the operation of a redundancy checking circuit for comparing addresses and redundant addresses and checking the coincidence or non-coincidence thereof is started with timing prior to performing the last data fetches. The address signals are supplied with the same timing as the supply of the write commands, wherefore it is not always necessary for the operation of comparing the address signals against the redundant addresses of the memory cells, where the switch to the redundant cell array was performed, to have to wait until all of the multiple-bit data to be fetched. Accordingly, with the present invention, the redundancy checking operation is started before all of the data are fetched. In the case of a 2-bit data pre-fetch, the redundancy checking operation is started after the first datum has been fetched, and before the second bit of data is fetched. That being so, it is possible to begin the decoder operation with timing that is faster by precisely the period of the redundancy checking operation, wherefore it becomes possible to perform write operations to the memory cells with faster timing.

REFERENCES:
patent: 5808944 (1998-09-01), Yoshitake et al.
patent: 5907515 (1999-05-01), Hatakeyama

Affiliated with

Also associated with

Rating

Memory device with multiple-bit data pre-fetch function does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Memory device with multiple-bit data pre-fetch function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory device with multiple-bit data pre-fetch function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1002378