Adding RAM to STM32F4

[khouja_houssem]

Posted on September 04, 2013 at 21:37

Hi,

For my project I need additional RAM, is it possible to add memory to the STM32F407VG (in the STM32F4-Discovery Board) using the FSMC interface?

[Tesla DeLorean]

Posted on September 04, 2013 at 21:58

Review schematics and pin allocations for boards using external memory, like STM3240G-EVAL or RedDragon407

Look also for daughter boards which you can plug the STM32F4-Discovery into. Personally I'd be looking for a different board, with a higher pin count STM32 part to better accommodate the DCMI and FSMC interfaces. Check eBay, etc.

[khouja_houssem]

Posted on September 04, 2013 at 22:19

Thanks for your answer CLIVE1.

In the STM32F4-Eval board we have only 8 address outputs (A16 to A23). What can be the maximum memory they could controle? Can it reach 16MB?

[Tesla DeLorean]

Posted on September 04, 2013 at 23:24

About 256 or 512 bytes depending on if your data bus is 8 or 16-bit wide?

I haven't looked at the STM32F4-Discovery being a practical platform for external memory, depending on the memory you'd have to wire up ~30 pins. The camera would be another ~20 pins