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Facing Flash memory Issue

shubmane
Associate II

Hi @st Team,

We had observed some unknown behaviour with respect to flash.

MCU => STM32U073CC.

Tools => STM32Cube Programmer

We need to write this mentioned value @last page of flash @address = 0x0803F800.

shubmane_0-1754292336886.png

After doing multiple connect/disconnect, The mentioned value got disappeared abruptly.

shubmane_0-1754292757925.png

Please refer the below after disappeared.

shubmane_1-1754293072595.png

Note - the probability of this issue occurance is much higher.

Please help us to diagnose this issue.

Best regards,

Shubham M. 

2 REPLIES 2
AScha.3
Super User

Hi,

i tried on a F303 , U0xx dont have here. (+ V 2.19.0 , stlink FW V2J46S7 )

But with 32b access....no problem (nothing "disappeared" ) after many conn/disconn.

AScha3_0-1754293980767.png

 

So just try : with standard 32b access and mode : hot plug , software reset ;

If you feel a post has answered your question, please click "Accept as Solution".
Shirley.Ye
ST Employee

I tried on the Nucleo-U083RC,

MCU => STM32U083RC.

Tools => STM32Cube Programmer

 

ShirleyYe_1-1754297364326.png

 

it is OK after reset, the programed value is there, not disappeared.