Boot0 Pin

[Huy Nguyen]

Posted on May 30, 2018 at 06:41

what happen if I don't push the boot0 pin on Vdd or pull it to Vss, just let it float ?

[Artur IWANICKI]

Posted on May 30, 2018 at 07:52

Hello,

In such a case state of BOOT0 pin will depend on the external conditions. It can 'catch' some disturbances and be either 'H' or 'L' state. Thus it may happened that MCU will not start from internal FLASH (Boot0='L') but it will try to run from system memory (built in bootloader) or internal SRAM. Thus I would strongly recommend to fix the level on this pin during startup process of the MCU.

Best regards,

Artur

[T J]

Posted on May 30, 2018 at 07:55

run a 1k - 10K to ground for normal operation.

[Huy Nguyen]

Posted on May 30, 2018 at 09:10

 ,

 ,

Thank you so much !

2018-05-30 12:56 GMT+07:00 T J <,st-microelectronics@jiveon.com>,:

STMicroelectronics Community

<,https://community.st.com/?et=watches.email.thread>,

Re: Boot0 Pin

reply from T J

<,

MCUs Forum* - View the full discussion

<,https://community.st.com/0D70X000006Ss7wSAC

[Nesrine M_O]

Posted on May 30, 2018 at 10:00

Huy Nguyen wrote:

Thank you so much ! 

https://community.st.com/0D50X00009bMM5DSAW