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STM32F427 SRAM

Question asked by amaral.guilherme on May 20, 2014
Latest reply on May 21, 2014 by Clive One
Hi,

I'm trying to use the 4K SRAM from STM32F427 with FreeRTOS 7.4.2. The VBat pin is correctly powered to a battery... The RTC works great.

I can access to SRAM memory and use it. At each reboot I can grab the data stored there.
The problem is when I power off the main power supply, leaving only the VBat supply: the information that I had stored in SRAM is changed by trash! :-(

Anybody can help me?

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