Patent ID: 11901018
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. A sense amplifier circuit, comprising:
first and second sensing nodes respectively connectable to first and second bit lines of an array of non-volatile memory cells;
first and second pre-charge circuits respectively connectable to the first and second sensing nodes and configured to pre-charge the respective first and second sensing nodes;
first and second local data buses respectively connectable to the first and second sensing nodes and configured to hold a corresponding sensed data state based a voltage level on the first and second sensing nodes, respectively;
first and second pluralities of data latches respectively connected to the first and second local data buses;
a connection circuit connected to the first and second local data buses bused and configured to transfer values latched in the first plurality of data latches to the second local data bus and to transfer values latched in the second plurality of data latches to the first local data bus; and
one or more control circuits connected to the first and second pluralities of data latches, first and second pre-charge circuits, and the connection circuit, the one or more control circuits configured to:
transfer, over the connection circuit from the first local data bus to the second local data bus, a sensed value from a first sensing operation capacitively stored on the first local data bus and one or more of the values stored in the first plurality of data latches;
perform a first set of logical operations between the sensed value from the first sensing operation and the values stored in the first plurality of data latches using the second plurality of data latches; and
transfer a result of the first set of logical operation using the second plurality of data latches over the connection circuit to the first local data bus; and
concurrently with performing the first set of logical operations, pre-charge the first sense node for a second sensing operation.