In summary, no power is required for non-volatile memory to retain information. Due to technology limitations non-volatile memory is not able to store large amounts of data and is written at the time of IC fabrication. Volatile memory can store more data than non-volatile memory, but it requires power to retain information. This information can be accessed randomly and written to by the user. ROHM offers EEPROM solutions which provide a means of retaining non-trivial data when power is removed. A variety of DRAM, P2ROM, and FeRAM memory solutions are available from LAPIS Semiconductor, to be used for retaining data, and are found in numerous applications.