This dataset supports the article entitled "RESTOP: Retaining External Peripheral State in Intermittently-Powered Sensor Systems" accepted for publication in MDPI Sensors "Low Power Embedded Sensing: Hardware-Software Design and Applications" Journal Data Supporting Tables: Table 3. Worst case energy use for each peripheral, and the minimum capacitance needed. Table 4. Time overhead caused by RESTOP in a system with three external peripherals. As well as the data to adjust the restore threshold (VR) for each attached peripheral before a power failure occurs. Date of data collection: from March 2017 - December 2017 Information about geographic location of data collection: University of Southampton, U.K. Date that the file was created: January 2018