Partitioned memory architecture with single resistor memory elements for in-memory serial processing

Abstract

A structure for in-memory serial processing includes a memory bank array. Each bank includes memory elements connected between input nodes and a bitline. Each memory element includes a programmable resistor with an input connected to an input node and an output connected to the bitline. Each bank includes a feedback buffer connected to the bitline and an output node. Output nodes of banks in the same column are connected to the same column interconnect line. The initial bank in each row includes amplifiers connected between the input nodes and the memory elements, respectively. Outputs of these amplifiers are also connected by row interconnect lines to memory elements in downstream banks in the same row. Optionally, voltage buffers are connected to row interconnect lines and integrated into at least some banks. The amplifiers, feedback buffers, and voltage buffers minimize local IR drops and thereby processing errors.