unique ID of mcu

[mhdizgah]

Posted on December 20, 2014 at 20:25

hi every one

i have 2 question :1- is there a unique ID for each stm32 mcu ?how we can read this(if there is ) ?2-i need to save a few data in mcu which dosent erased after reset (like eeprom )is there any internal fuse bit /flag or some thing like that (only some byte is enough ) for storing datas ?how we can achieve that ?thanks

[Tesla DeLorean]

Posted on December 20, 2014 at 21:05

Each STM32 has a unique 96-bit ID, it's address depends on the specific model, refer to the Reference Manual.

Use OTP (One Time Programmable) area.

[Tesla DeLorean]

Posted on December 20, 2014 at 21:13

printf(''STM32F4 %08X-%08X-%08X UNIQUE

'',
*((unsigned long *)0x1FFFF7E8),
*((unsigned long *)0x1FFFF7EC),
*((unsigned long *)0x1FFFF7F0) );