A RISC-V SoC for Mobile Payment Based on Visible Light Communication

Abstract

A RISC-V SoC (system on chip) based on visible light communication (VLC) for mobile payment application is presented. The proposed SoC can be applied to Point-of-Sale (POS) terminals to receive mobile payment transaction information sent by the LED flashlight on a smartphone. It consists of a RISC-V subsystem, dedicated analog front end, pulse preprocessing module for VLC signals and other modules. The complete chip is designed on CMOS 0.18µm technology with a chip size of 1.5mm*1.6mm.