Daily Archive: December 11, 2014

Library 45- Interface backup SRAM on STM32F4 7

Library 45- Interface backup SRAM on STM32F4

Almost all (except STM32F401/STM32F411) STM32F4xx MCUs have internal backup SRAM, which stores data, if power is at least on Vbat, or main voltage is active. These MCUs have internal 4-kBytes of SRAM. It is on location where if you read “too much” you can make a HardFault error and this is something you don’t want. So be careful when you are doing with this ram. Backup SRAM can be also used as EEPROM, if your Vbat battery is always active, so...