A Low-Power Low-Area SoC based in RISC-V Processor for IoT Applications

The IoT applications use embedded processors to execute lightweight tasks for sensing and management of communications, using different energy harvesting strategies. However, many IoT applications need a low-power consumption for the limitation of power supplies. This paper presents a low-power low-area System On a Chip (SoC) for IoT applications with a stable power supply. The SoC consists of a microprocessor, a 1-KB of Static Random Access Memory (SRAM), a debug module, a timer, a General-Purpose In-Outs (GPIO), and a Serial Peripheral Interface (SPI) programmer. The processor uses a RISC-V Instruction Set Architecture (ISA). The implementation is fabricated in 0.18 mu m CMOS General Purpose (GP) technology, occupies a 750 mu m x 536 mu m. The microprocessor represents only 7.6 % of the area of all SoC. The measures denote a 2.17 mu W with a 1V of supply voltage and 32KHz operating clock frequency.