Static information storage and retrieval – Read/write circuit – Having particular data buffer or latch
Reexamination Certificate
2001-04-21
2003-07-01
Ho, Hoai (Department: 2818)
Static information storage and retrieval
Read/write circuit
Having particular data buffer or latch
C365S158000, C365S221000
Reexamination Certificate
active
06587384
ABSTRACT:
BACKGROUND
Magnetic Random Access Memory (“MRAM”) is a type of non-volatile memory that is being considered for long-term data storage. Data can be accessed much, much faster from MRAM devices than conventional long-term storage devices such as hard drives. In addition, the MRAM devices are more compact and consume less power than hard drives and other conventional long-term storage devices.
Certain MRAM devices perform destructive read operations in which values of bits are read, changed and then restored. The destructive read operations increase reliability of reading the values. However, the destructive read operations require additional circuitry for performing functions such as write-back.
Providing separate circuits for performing the write-backs is not desirable.
SUMMARY
According to one aspect of the present invention, an input/output circuit includes a first register having a first input and a first output; a second register having a second input; and a third register having a third input. The first output is coupled to the second input and the third input. The third register can store data for write-backs.
Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
REFERENCES:
patent: 4495629 (1985-01-01), Zasio et al.
patent: 5015875 (1991-05-01), Giles et al.
patent: 5325511 (1994-06-01), Collines et al.
patent: H1796 (1999-07-01), Srivatsa et al.
patent: 5999023 (1999-12-01), Kim
patent: 6108244 (2000-08-01), Lee et al.
patent: 6188615 (2001-02-01), Perner et al.
patent: 6215704 (2001-04-01), Shimizu
patent: 6256224 (2001-07-01), Perner et al.
patent: 6269028 (2001-07-01), Togami
patent: 6292428 (2001-09-01), Tomita et al.
Hewlett--Packard Development Company, L.P.
Ho Hoai
LandOfFree
Multi-function serial I/O circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-function serial I/O circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-function serial I/O circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3084776