STM32F437AIH6 UBGA-169 missing FMC_A13 ，how to add extension SRAM ？

[kyrin]

1�?I have choose STM32F437AIH6 , and want to add an extension SRAM , but MCU missing PIN FMC_A13，In this condition , is it feasible to use SRAM?

2�?Use Trace Macrocell function，but FMC_A19 and TRACE0 are the same pin . is it affect to code coverage test （Trace Macrocell） if i want use FMC_A19 to acess extersion SRAM？

thanks

kyrin

[Tesla DeLorean]

Right, you're likely going to have to make a choice between full bus external memory and trace capability. You should be able to use a subset of the memory.

Most have migrated to SDRAM due to costs

[kyrin]

Thank you to reply . Do you have any idea about question 1 ？

[PMath.4 · Accepted solution]

If you must use SRAM rather than SDRAM then connect A13 of the RAM either high or low. You will use half the available memory but the remaining half should work

[kyrin]

thanks .got it.