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ANVO: FRAM Memories

Migration from serial SPI FRAM to serial SPI nvSRAM
This application note provides an overview about advantages and potential issues to be considered when migrating from serial SPI FRAM to serial SPI nvSRAM. The nonvolatile nature of nvSRAM is guaranteed by the integrated SONOS FLASH. At power up the FLASH initiates the SRAM in less than a millisecond. SRAM data can be saved to the FLASH under all operation conditions – even at sudden and sharp power loss. For this reason store operations can be powered by the energy stored in a small capacitor. See Application Note attached in PDF here below