NP52N055SUG-E1-AZ is a part of Renesas' RNS series of non-volatile SRAMs. It is a 5V, protected, 2Mbit, non-volatile static random access memory (SRAM) device housed in a 28 lead, 300 mil wide SOJ package. The device has an integrated EPROM memory that serves as a backup memory in case of power failures. It has a maximum read/write cycle time of 45ns and a minimum write cycle time of 15ns. It is designed for use in harsh environments, such as in automotive and industrial applications.