2024-08-19 01:11 AM - edited 2024-08-19 08:49 PM
Good Day and Hello Everyone.
In my upcoming project, my task is to upgrade the currently used MCU from STM32F103ZG to STM32H755ZI.
My question are;
1- Can I replace all the FSMC I/O pins that I'm currently using on STM32F103ZG with the FMC I/O pins on STM32H755ZI?
2- If not, are there any other option for me to find a replacement for FMSC I/O pin that I'm currently used on STM32F103ZG to other pins on STM32H755ZI?
3- Can I replace all the FSMC_NOE, FSMC_NWE and FMSC_NWAIT pins that I'm currently using on STM32F103ZG with the FMC_NOE, FMC_NWE and FMC_NWAIT I/O pins on STM32H755ZI?
Thank you in advance for all your advice, opinion and tips. Any answer are highly appreciated.
2024-08-19 01:18 AM
Hello @mdfsl and welcome to the community.
What do you mean by " Can I replace all the FSMC I/O pins that I'm currently using on STM32F103X6 with the FMC I/O pins on STM32H755ZG?"
You need to give more details on your case and what do you plan to do..
2024-08-19 01:21 AM
Hello @mdfsl
STM32H755ZG Does not exist. Could you please correct this.
Best Regards.
STTwo-32
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2024-08-19 06:43 PM
Hello @STTwo-32 very sorry for the mistake. The actual part number is STM32H755ZI
2024-08-19 07:35 PM
Hi @SofLit , thanks for your reply.
On our current product, we are using FSMC_A[4:1], FSMC_D[15:0], FSMC_NOE, FSMC_NWE and FMSC_NWAIT I/Os (total of 23 pins) on STM32F103ZG to communicate with an external Motor Controller IC. On our next project, due to a new technical requirement, we will need to change from using STM32F103ZG to STM32H755ZI. The STM32H755ZI MCU does not have any FSMC I/Os but it does have FMC I/O and I've checked the datasheet for both MCU and it seems that they are huge similarities between FSMC and FMC I/Os.
I've asked the Firmware team regarding this matter and according to them, if the I/O structure and architecture for both MCU are the same, I can use the FMC I/Os on STM32H755ZI to replace the FSMC I/Os on STM32F103ZG with minor changes on the Firmware.
Therefore, I would like to get a confirmation from STM technical teams or any other experts that is familiar with these MCUs about using the FMC I/Os on STM32H755ZI to replace the FSMC I/Os on STM32F103ZG.