30.9 A 147TOPS/W, 250TOPS/mm 2 , Fully Synthesizable, Digital Compute-in-Memory Accelerator Supporting INT8×INT8 with Zero-Point Quantization in Intel 18A Technology

A fully synthesizable DCiM on-die accelerator with 128 input channels, 32 output channels, and 2 weight sets, supporting zero-point-quantized INT8×INT8 computation, is fabricated in Intel 18A technology and occupies$0.0856 \text{mm}^{2}$. The DCiM accelerator operates at 2.62 GHz for a supply voltage of 1.1 V, and 25 °C, achieving a peak area-efficiency of$250 \text{TOPS} / \text{mm}^{2}$. Robust operation of DCiM is maintained down to$400 \text{mV}, 25^{\circ} \mathrm{C}$, where it delivers a peak energy-efficiency of 147TOPS/W at 25% input activity, with a power consumption of 6.1 mW.