About 2sayle

2sayle · 2023-12-19

Hi everyone,I am currently in the process of developing a board that incorporates an STM32H743VIT and a voltage level shifter (FXMA108BQX) positioned adjacent to it. The objectives are to translate 3.3V logic levels to custom voltage levels (programm...

2sayle · 2023-05-11

Hello everyone :D I am currently using the STM32H743VIT6 (LQFP-100) on a custom PCB.My goal is to generate fast positive pulses (ideal case would be a 10ns pulse) on TIM4 CH2 (PB8). APB2 is clocked at 200MHz so I can get 5ns ticks from my timer.Gener...

2sayle · 2023-05-12

Thank you !

2sayle · 2023-05-12

Thank you all for your answers. Indeed, I am not used to probing on PCBs. Your advice has been invaluable! Do you have any manuals/tutorials that I can use to improve my hardware testing skills?

2sayle · 2023-05-11

Effectively, I did not configured my probe in X10... I observe now a rise/fall time of 3ns approximatively.My probe is Rigol RP1100 and datasheet says that I can measure down to 1.4ns rise times with X10 setting.Now signal is better but I observe a l...

2sayle · 2023-05-11

No, I would say that rise/fall times are constant (30ns approx) whether I program a 100ns or a 350ns time-width for the pulse, for example. But if I want to program a pulse under 50-60ns, the signal becomes rounded (and not squared anymore) : it's ex...

User statistics

User Activity

STM32H7 SPI + Level Shifter

[Help] Rise/fall times too slow on nanosecond-wide pulses

Re: [Help] Rise/fall times too slow on nanosecond-wide pulses

Re: [Help] Rise/fall times too slow on nanosecond-wide pulses

Re: [Help] Rise/fall times too slow on nanosecond-wide pulses

Re: [Help] Rise/fall times too slow on nanosecond-wide pulses