Questions tagged [glitch]

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Z80 interfacing, address decoding logic produces noisy signals

I really would like to have suggestions and feedback from someone. It's about digital logic, in detail, the Z80 interfacing. In this design, I used a 74HC30 which is a 8-input NAND Gate. I'm using it ...
ozw1z5rd's user avatar
  • 215
0 votes
1 answer
57 views

Clock/voltage glitching

Is it possible that clock/voltage glitching can happen over remote distances? (Having the necessary equipment.)
19216811's user avatar
0 votes
1 answer
140 views

How to get rid of glitch?

I have designed simple P-channel MOSFET circuit. It works well, but when low source power is applied (1 V), a glitch occurs in the output signal. I tried R, L and C component, but it didn't work. What ...
aAa's user avatar
  • 11
1 vote
1 answer
2k views

STM32 PWM and Output Compare

I have some simple firmware written for an ATmega328 (not Arduino) and I'm converting to STM32. I have more than one STM32 development board, so for now I'm searching a generic config and generic code....
Giovanni's user avatar
4 votes
0 answers
86 views

How to control DAC white noise at increasing sample rates?

A lot of background, the question is at the end: I have made some simulations and experimental tests with the goal of achieving lowest possible noise floor using DACs with a sample rate of at least ...
tobalt's user avatar
  • 22k
0 votes
1 answer
96 views

Question re voltage gain glitch LTSpice simple one BJT amp simulation

Screenshot shows a simple one BJT amplifier circuit in LTSpice, 100mV 800 Hz sinewave input with the output shown in the blue trace. The green trace shows the calculated voltage gain i.e. Vout/Vin. ...
Dabbo's user avatar
  • 579
0 votes
1 answer
102 views

Determining cause of QSPI FLASH output glitches

I am testing a QSPI NOR FLASH device on a board I designed. It's datasheet is here. Although it is working, I am seeing some glitches on the FLASH SDO (Serial Data Output) line. All other signals are ...
Matty's user avatar
  • 207
-1 votes
2 answers
63 views

Can hazards increase switching time and/or number of switchings?

In connection with question CMOS gate logic switching time based on input vectors one of the answers mentioned hazards. Although the question was about the switching time, finally I did not find the ...
katang's user avatar
  • 101
2 votes
3 answers
2k views

What is the difference between a glitch and a hazard?

Both glitches and hazards seem to be very similar. Can the difference be explained with the help of an example?
AmazingMonk's user avatar
0 votes
3 answers
456 views

Getting glitches on GPIO using a MOSFET as a logic level converter

I need to connect an Event Detection pin (pin of the NXP NTAG 5 component) to a GPIO of the NXP i.XM6 processor. The problem is that the NTAG 5 pin has a logic level of 5V and the GPIO has a logic ...
Martin Denion's user avatar
1 vote
1 answer
461 views

Glitches in clock gating cell

how exactly does glitch happen for rising-edge and falling-edge ICG ? Why for the top version of rising-edge ICG, there is no X at the MSB of the latch output ? Note: TE signal is asynchronous to CLK,...
kevin998x's user avatar
  • 413
0 votes
2 answers
133 views

Reasons for glitches observed on PCB from physical touch of floating enclosure

I have a circuit on a PCB on which I’m observing “analogue glitches” when making physical contact with the enclosure. This enclosure is from ABS and there is a circular connector on one side for ...
citizen's user avatar
  • 2,626
0 votes
1 answer
377 views

Glitches on ring oscillator based on discrete logic gates

I built a ring oscillator out of discrete logic gates as in the following schematic: It consists of 6 inverters/NOT gate (SN74LVC1G04@U12-17) and one NAND gate (SN74LVC1G00@U11) so the circuit can be ...
DurandA's user avatar
  • 233
0 votes
1 answer
290 views

Counter glitching? Instability? Can't get a trigger lock on the scope, what might that be?

I have a 4 MHz clock and 4 x 74LS161 4-bit counters hooked up to get a 16 bit counter. It's all done how I have done it many times, synchronous with clock going into all the counters and RCO of ...
Gunther Schadow's user avatar
0 votes
1 answer
109 views

74LS652 shows peculiar glitching behaviors, what might cause this and how can I prevent this?

I am using 74LS652 octal bus transceivers and registers, in a 4 MHz switching application and I am seeing very peculiar glitching. Here is the focus of the problem: and that 16 bit Counter is here ...
Gunther Schadow's user avatar
3 votes
3 answers
2k views

How do you fix the glitches in the following Karnaugh maps?

The following circuit is supposed to output 1 if the input is greater or equal than 1010 (decimal 10). The truth table is given and we are supposed to convert that to POS and SOP using Karnaugh maps. ...
SilenceOnTheWire's user avatar
2 votes
3 answers
3k views

Treadmill causes nearby electronics glitch

I don't know if it is right place to ask, if not correct/guide me. I recently have built treadmill workstation, where I could walk and work (rather than just sitting). But as soon as I turn on ...
JavaMachine's user avatar
1 vote
2 answers
168 views

Changing pin direction without glitching on LPC800

I'm looking at an LPC812 Cortex M0+ microcontroller and its GPIO functions. On a PIC microcontroller, one would always set the LATch prior to changing the direction of a given pin. This avoids the ...
carveone's user avatar
  • 2,578
1 vote
3 answers
522 views

A problem regarding my Slayer Exciter circuit?

I have made a Slayer Exciter circuit for my school project. I'm going to be assessed on it. Now, it works just fine. But if I have to light a tubelight or something, I have to touch the terminal to ...
Ritwik Ojha's user avatar
1 vote
1 answer
3k views

debounce filter vs glitch filter [closed]

What is the difference between debounce filter and glitch filter on a mcu? I'm trying to implement a hardware debounce filtering on a ATSAM4S4C (ATMEL SAM CORTEX-M4 - PAGE 575. http://ww1.microchip....
MrBit's user avatar
  • 2,013
1 vote
1 answer
942 views

For oscilloscope, what are the differences for Glitch Capture Channel and Sample Channel?

I'm using a Tektronix oscilloscope and I use only one channel. I export the data for that channel to a csv file and open it on my PC. I found the csv file actually contains data for two waveforms! One ...
xxxxyyyzz's user avatar
  • 117