Add external memory to an STM32 microcontroller

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[@mladenmatosevic4591]

Most have SPI and I2C controllers, but to execute program in such memory you must copy it in internal RAM and set that as executable. So that is a hassle and slows down execution, but you can store lots of data in I2C or SPI memories

[@bersissevimli1588]

How ram we can add ?

[@christianplay4041]

Very interesting topic, its sold commercialy so nowadays its easy for people the to create their own RPi's with dedicated PCB software(like Altium or EasyEDA)

[@rahuls7039]

We can use SPI to add external memory for STM32 but how can RAM be increased externally? Can you name those STM32 controllers?

[@PredictableDesigns]

Some high-end STM32's include a Flexible Memory Controller for adding external memory. These support a data bus for interfacing to external RAM just like a microprocessor. Of coursez external RAM won't be as fast as internal RAM.
There are multiple versions that support this, but I know off hand is the STM32F756xx

[@rahuls7039]

@@PredictableDesigns Thank You for the reply.