Verifying Or Reading A Cell In An Analog Neural Memory In A Deep Learning Artificial Neural Network
AssigneeSilicon Storage Techonology, Inc.
InventorsHieu Van Tran, Vipin Tiawari, Nhan Do, Mark Reiten
Life of this patent
Estimating the term…
Abstract
In one example, a circuit for comparing current drawn by a selected memory cell for a vector-matrix-multiplier with current drawn by a reference matrix comprises a first circuit comprising a first PMOS transistor coupled to a first NMOS transistor coupled to the selected memory cell; and a second circuit comprising a second PMOS transistor coupled to a second NMOS transistor coupled to the reference matrix; wherein a node between the second PMOS transistor and the second NMOS transistor outputs a current indicative of a value stored in the selected memory cell.
Claims17
A circuit comprising:
- a first circuit comprising a first PMOS transistor coupled to a first NMOS transistor coupled to a selected non-volatile memory cell;
- and
- a second circuit comprising a second PMOS transistor coupled to a second NMOS transistor coupled to a reference matrix;
- wherein a node between the second PMOS transistor and the second NMOS transistor outputs a current indicative of a value stored in the selected non-volatile memory cell.
A circuit comprising:
- a transistor for comparing current received from a first node with a reference current, wherein the first node is selectively coupled to one of a reference matrix by a first switch and a selected non-volatile memory cell by a second switch;
- wherein a voltage on the first node indicates a result of the comparing.
A circuit comprising:
- a memory cell current source;
- a switch coupled to the memory cell current source;
- a capacitor coupled to the memory cell current source in parallel with the switch;
- a comparator with one input coupled to the memory cell current source, the switch, and the capacitor and another input coupled to a voltage reference;
- and
- a counter coupled to receive an output from the comparator and to output a digital count signal.
Dependencies are inferred from the claim text.