A 7-nm Compute-in-Memory SRAM Macro Supporting Multi-Bit Input Weight and Output

Abstract

In this work, we present a compute-in-memory (CIM) macro built around a standard two-port compiler macro using foundry 8T bit-cell in 7-nm FinFET technology. The pro- posed design supports 1024 4 b × 4 b multiply-and-accumulate (MAC) computations simultaneously. The 4-bit input is repre- sented by the number of read word-line (RWL) pulses, while the 4-bit weight is realized by charge sharing among binary-weighted computation caps. Each unit of computation cap is formed by the inherent cap of the