Fig. 8: Acceleration of vector-matrix multiplication using the 30 × 30 CA.
From: Self-rectifying resistive memory in passive crossbar arrays
a Configuration of a 30 × 30 matrix w mapped onto a CA of the same size. Vector x is encoded as voltage signals (‘0’ = 0 V, ‘1’ = 2 V) and enters into the row-lines (ROW[0]–ROW[29]). The resulting current vector j as an intermediate product enters into sense amplifiers (SAs) to be quantized. b Schematic timing diagrams of row- and column-line signals. The inhibit voltages applied to unchosen column-lines are denoted by Vinhibit. c Statistics of four states (HRS, L1, L2, L3) in four random matrices (w1–w4). d–g (upper panel) Conductance maps of the four random matrices (w1–w4) and (lower panel) measured current vectors j for the four matrices. We considered a vector x of ones. The measurement results are compared with the calculated current vectors using the measured currents on individual cells.
