STM32 W25Qxx
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This page describes how to use W25Qxx Serial Flash/EEPROM chips with the STM32. The examples and code on this page has been developed on and for the Black Pill development board.
Black Pill EEPROM
The Black Pill boards, whether original or copy, all includes an unpopulated footprint on the back side, with space for a "generic eeprom". This footprint can be populated with a wide range of compatible EEPROM chips.
The examples on this page are all using a Black Pill with a Winbond W25Q128.