We have had trouble with a STM32F7769BGT6 resetting when heated to around 45°C. The part should be rated for 85°C, as are the rest of the components on our board. We've looked at the power supplies and they don't show any issues. To duplicate the pro...
I'm using an STM32F769 for a project. I'm trying to continuously stream ADC samples to a buffer. I can fill the buffer without issue, but the DMA never recirculates back to the beginning. I don't get any DMA errors, and the ADC is still running (I...
Posted on October 18, 2017 at 15:35I wonder if someone could help me with proper shutdown and restart of a bulk HOST IN USB endpoint. I am using an STM32469I, with HS USB via ULPI. I can start USB streaming to the host, but at termination I get ma...
Posted on August 11, 2017 at 21:01I am using the SAI1 peripheral on the STM32469I for full-duplex operation. I first implemented independent Tx, and it works great. However, when I add synchronous slave receive, the DMA acts very strangely. Inste...
In the end, we reduced the clock core frequency to 200 MHz, and the problem disappeared. I recommend using this frequency for any product that must operate over the full temperature range. In fact, since 216 is only 8% larger than 200 MHz, I recomm...
By reducing the system clock rate to 200 MHz, were able to pass the thermal testing requirements. It appears that this part, at least in the configuration we are using it, is not truly rated for the full clock frequency over the full temperature ran...
> I never observed noticeable heat generation (high power dissipation) with similar F4 modelsNeither have I. This problem is occurring at high ambient temperature levels that the product must be able to operate under.
Pavel,The register is R0. When the fault occurs, the register has just been loaded with a memory address 0xCxxx'xxxx, which would be on external memory. However, because of the bit flip the address becomes 0x8xxx'xxxx, which is nowhere and causes t...
