STM32F746xx possible silicon bug

[tm3341]

Posted on July 14, 2015 at 21:51

I'm doing my IDENTIFICATION library for F4 and F7 lines.

Both datasheets say that location, where FLASH SIZE in kBytes is stored is on 0x1FFF7A22.Ok, reading on STM32F439-Eval gives me 2048 which is OK, because this is 2MB, reading on F429-Discovery has the same result = OK,but reading from this address on F746-Discovery gives me 0xFFFF. It looks like this section was not programmed or there is mistake in datasheet.Can someone approve this? #bug #stm32f7 #silicon #possible

[Tesla DeLorean]

Posted on July 14, 2015 at 22:20

This works for me

printf(''STM32 %d KB FLASH, %d KB RAM, %08X-%08X-%08X UNIQUE

'',
*((unsigned short *)0x1FF0F442),
320,
*((unsigned long *)0x1FF0F420),
*((unsigned long *)0x1FF0F424),
*((unsigned long *)0x1FF0F428) );

You're looking in the wrong manual

[Tesla DeLorean]

Posted on July 14, 2015 at 22:23

RM0385 says

Data Sheets/Manuals might be wrong

[tm3341]

Posted on July 15, 2015 at 00:19

Right! My bad!