A 65nm Subthreshold System-on-chip

This is a subthreshold system-on-chip consisting of a 16-bit MSP430 microcontroller, SRAM, and on-chip DC-DC converter. The microcontroller and SRAM are designed to operate between 0.3V to 0.6V to support severely energy constrained applications. The switched capacitor DC-DC converter is fully integrated on chip and provides a wide range of load voltages (0.3V-1.1V) at > 70% efficiency.