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Power down reset feature to back up the external SRAM data

Question asked by m.vinay on Apr 14, 2015
Latest reply on Apr 15, 2015 by m.vinay
Hi,

I want to use external SRAM with the controller STM32F429. i want to make use of internal supervisor circuit, which is used to power the internal RTC and internal 4Kb SRAM, to backup the data in external SRAM. for this i need to know following things
1. is there any GPIO with default behaviour of going low when there is PDR (power down reset)
2. is it possible to pogram any GPIO for this particular behaviour? 


Thanks
Vinay

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