Non-volatile memory systems and methods
First Claim
Patent Images
1. A method of programming a multilevel memory cell, the method comprising:
- determine whether a margin of read said memory cell matches a certain criteria;
setting a program fail flag in the event the margin does not match said criteria;
perform binary search to determine data corresponding to content of read memory cell; and
allowing access to said memory cell.
6 Assignments
0 Petitions
Accused Products
Abstract
A high speed voltage mode sensing is provided for a digital multibit non-volatile memory integrated system. An embodiment has a local source follower stage followed by a high speed common source stage. Another embodiment has a local source follower stage followed by a high speed source follower stage. Another embodiment has a common source stage followed by a source follower. An auto zeroing scheme is used. A capacitor sensing scheme is used. Multilevel parallel operation is described.
127 Citations
20 Claims
-
1. A method of programming a multilevel memory cell, the method comprising:
-
determine whether a margin of read said memory cell matches a certain criteria; setting a program fail flag in the event the margin does not match said criteria; perform binary search to determine data corresponding to content of read memory cell; and allowing access to said memory cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system comprising:
one or more circuits configured for programming a multilevel memory cell, the one or more circuits configured to; determine whether a read margin of said memory cell matches a certain criteria; set a program fail flag in the event the margin does not match said criteria; perform binary search to determine data corresponding to content of read memory cell; and allow access to said memory cell. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
-
20. A method of reading and/or programming a multilevel memory cell, the method comprising:
-
determine whether a margin of said memory cell matches a certain criteria; setting a program fail flag in the event the margin does not match said criteria; perform binary search to determine data corresponding to content of read memory cell; and allowing access to said memory cell.
-
Specification