The M48Z58Y-70MH1F is an STMicroelectronics Non Volatile Random Access Memory (NVRAM) which is 64K in size (8K x 8) with 70ns access time. This memory uses Non-Volatile technology, meaning the data stored in the memory remains even with power removed. It is ideal for storing critical data which needs to remain secure in the event of a power outage or other system failure. The NVRAM is manufactured by STMicroelectronics, a leading supplier of integrated circuits, computer chips, and other components. This part is perfect for applications that require low power consumption, fast data access times, and reliable operation in harsh operating conditions.