About JBret.1

JBret.1 · 2020-10-23

I want to use STM32F413 for my PCB design. I need USB data lines for communicating with a computer. Ideally, I would not have any oscillator on the PCB to save space. I noticed that's it's not possible to use HSI for the USB clock on CubeMX. Can I us...

JBret.1 · 2020-10-23

Huge thanks. I decided to put and oscillator to ensure stability as this product will be sold to customers. If use a clock oscillator I only need to connect PH0 to the OSC pin on the chip? (I leave PH1 floating?)Oscillator I choose: https://www.digik...

JBret.1 · 2020-10-23

Hi, how can you setup Start of Frame signal? the STM32 will only operate in device mode so if it's possible to use SOF instead of a crystal it would be an ideal solution. From my understanding, the host sends a signal every 1 ms (LS) or 125 us (HS). ...

JBret.1 · 2020-10-23

The pink square around HSI on PLL Source MUX is an error and the code cannot be generated. Even when I select PLLCLK from the System Clock Mux the error is still there. As @Community member said, it's probably a CubeMX limitation and it can be modi...

JBret.1 · 2020-10-23

What accuracy problems and malfunction should I expect to encounter? I'm routing my USB lines with width and spacing the ensure I have 90 ohms differential impedance. The device will only be used at room temperature. The USB baud rate will be 115200....

JBret.1 · 2020-10-23

When I select HSI as PLL clock source on "Clock Configuration" it gives me an error, so I assume it is not possible to route HSI to the PLL internally, that's why I'm trying to do it externally.

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