F1/F2 Option Bytes

joachim2399 · ‎2016-01-26

Posted on January 26, 2016 at 16:15

I've recently changed from a F1 to a F2 uC in one of my projects.

In the F1, there were two Bytes (Data0 and Data1) in the option byte register (FLASH_OBR) available for custom use (I used it to save a device address). Now in the F2 this Data Bytes are gone. Can anybody tell me if there's an adaquate replacement for the F2.

The OTP registers don't really fit because there's no way to erase it.

Thanks for any proposals

#option-bytes-f1-f2

pkumar1883 · ‎2016-01-26

Posted on January 27, 2016 at 08:13

Dear Dash,

Read Programming manual PM0059. It explains every thing about Option bytes.

joachim2399 · ‎2016-01-26

Posted on January 27, 2016 at 08:54

I've already read the ''Programming manual PM0059'' carefully and as I said, the Data Bytes are gone.

What I can't belive is, that ST just removed the Data Bytes from one family to the other with no adaquate replacement. This doesn't really sustain STs proclamation of easy family migration.

Thanks

Amel NASRI · ‎2016-01-27

Posted on January 27, 2016 at 12:34

Hi Dash,

I don't know your reasons behing choosing F2.

But may be it will be more adequate to select F3 instead of F2.

STM32F3 devices may be considered as the continuation of STM32F1 ones based on Cortex-M4.

And you find there Data1 and Data0 bytes (refer to RM0316 for example).

-Mayla-

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