The STM32G030 microcontroller does have spare option bytes, but there seems to be some confusion about their availability and usage. Here’s what I can share:
Number of Spare Option Bytes:
- Contrary to some claims, the STM32G030 doeshave spare option bytes available for user customization. While older G0 series like G070/G0B1 have 128 bytes, the G030 has 96 bytes located at addresses 0x1FFF7800 – 0x1FFF785F.
Functionality:
- These spare bytes can be used for various purposes like:
- Storing application-specific data
- Customizing boot behavior
- Implementing security features
Limitations:
- It’s important to note that writing to these bytes is a permanent operationand cannot be undone easily.
- Some specific functionality reserved for option bytes in other microcontrollers like Read Out Protection (ROP) might not be available in the spare bytes of the G030.
Resources:
- While the datasheet (RM0433) doesn’t explicitly mention them, you can find references to G030 spare option bytes in:
- STMicroelectronics community forum:https://community.st.com/t5/stm32-mcus-products/stm32g030-spare-option-bytes/td-p/632770
- STMicroelectronics wiki:https://wiki.segger.com/ST_STM32
Further Assistance:
To provide more specific help with your STM32G030 spare option bytes, I’d need more context about your application and intended use. Please share details like:
- What functionality are you aiming to achieve with the spare bytes?
- Are you encountering any specific challenges or uncertainties?
- Have you found any relevant code examples or application notes?
By understanding your needs, I can guide you toward the best resources and practices for effectively utilizing the spare option bytes in your STM32G030 project.