Questions tagged [edge]
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56 questions
2 votes
3 answers
418 views
Series termination resistor does not seem to do anything
I made this daughter board hoping I could slow the edges of pwm signals coming out of a pre-existing MCU board connecting to it: The plan is that the MCU board connects through header pins to the ...
- 677
0 votes
2 answers
521 views
Troubleshooting a Positive Rising Edge Trigger Monostable Circuit with 555 IC
I've been working on designing a positive rising edge trigger monostable circuit using a 555 IC, aiming for a pulse duration of around 5 seconds. However, my simulation attempts have been unsuccessful ...
- 391
1 vote
2 answers
108 views
SCLK : 50 [MHz] Rising Edge vs 25 [MHz] Dual Edge : Tradeoffs
TI manufacturers two near-identical drivers for matrixed LEDs, LP5890 and TLC6983. I was only able to determine the following ...
- 457
0 votes
4 answers
1k views
Confusion about edge/level triggering interrupt
I have read this answer. My understanding is, there are actually 2 lines logically: clock/gating line event/interrupt line And the clock/gating line can make the circuit take event input at an ...
- 1,302
0 votes
0 answers
45 views
Weird waveform of a digital latch
I am simulating on ADS. As you can see, the V1 goes high at 9n sec.The clk has first rising edge at 10n sec. Why does output V2 not go up at the 10n seconds? It goes up at 20n seconds at the second ...
user314455
0 votes
1 answer
471 views
The datasheet says that USB operates on 1.8v instead of 3.3v, do I need some sort of logic level shifter in my circuit?
I'm trying to design a breakout board and connect the Google coral chip to my Toradex Colibri imx6 SoC via usb. I'm assuming that the imx6 is using 3v3 logic because it doesn't indicate otherwise, and ...
4 votes
3 answers
986 views
Minimizing signal delay when debouncing
I have a mechanical switch that I'd like to use as a signal source for a digital input of a microcontroller. The switch is normally closed, and I'd like to detect the switch being opened as quickly as ...
- 412
3 votes
0 answers
1k views
Why do some PCBs have exposed copper along the edge even when mounted in plastic enclosure? [closed]
I've already read about reasons for exposing copper at the perimeter of a PCB (i.e. Why do some PCBs have exposed plated perimeters?). It seems that the main reason to completely expose the copper ...
