Energy Optimizers selects Ramtron’s nonvolatile F-RAM memory for Plogg wireless energy management plugs

The Plogg monitors energy use of household, medical, office, etc. appliances in volts/amps/watts/kilowatts/kilowatt-hours and records the data in a buffer. Measuring up to 13 different variables, this wireless smart meter plug evaluates how energy is being used enabling the user to reduce consumption, save money and the environment. The Plogg provides wireless data delivery to computers via Bluetooth or ZigBee technology allowing power consumption to be checked in real time and controlled remotely.



“We designed F-RAM into the Plogg for optimal data logging,” says Shaun Merrick, General Manager of Energy Optimizers. “When logging data very rapidly and frequently, as the Plogg is designed to do, the endurance on an EEPROM is insufficient and would be reached too quickly. The natural nonvolatile memory alternative for this demanding application is F-RAM, which has virtually unlimited endurance.”



In the Plogg, F-RAM provides fast and reliable data storage for up to 5,000 measured values and their associated date/time stamp, at intervals of one minute to one month. When logging at one-minute intervals, the endurance limit of EEPROM is quickly reached, so an alternative nonvolatile memory technology is required. The optimal option is F-RAM, which has virtually unlimited endurance and will not wear out.