Transcription of AN4894 Application note - STMicroelectronics
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AN4894 Application note - STMicroelectronics
December 2021AN4894 Rev 51/401AN4894 Application noteEEPROM emulation techniques and software forSTM32 microcontrollers IntroductionEEPROMs (electrically erasable programmable read-only memories) are used for non-volatile storage of updatable Application data, or to retain small amounts of data in the event of power failure in complex systems. To reduce cost, an external EEPROM can be replaced by on-chip Flash memory, provided that a specific software algorithm is Application note describes the software solution (X-CUBE-EEPROM) for substituting a standalone EEPROM by emulating the EEPROM mechanism using the on-chip Flash memory available on the STM32 Series products listed in Table 1: Applicable products. X-CUBE-EEPROM also provides a firmware package including examples showing how to exploit this EEPROM emulation driver (see Section 5: API and Application examples).
AN4894 Rev 5 7/40 Main differences between external and emulated EEPROM 39 2 Main differences between external and emulated EEPROM EEPROM is a key component of many embedded applications that require non-volatile
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