All Questions
15
questions
0
votes
1
answer
56
views
Interrupted SSI clock sequence
I measured the following clock and data sequence (time axis is in microseconds) between a Beckhoff KL5001 encoder module and a 19-bit SSI encoder. Apparently the clock is interrupted 3 times before ...
- 57
2
votes
1
answer
809
views
I2C data held low and clock held high
We are having issues with the I2C communication on our I2C bus and it seems like one of the INA233s on the bus is causing the issue. We are using the INA233s as current and power monitors. We use ...
- 21
1
vote
2
answers
118
views
Why do we use a low resistors on Data lines for an ADC for example or a clock?
Why do we use a low resistors on Data lines for an ADC for example or a clock ?
- 71
0
votes
2
answers
172
views
Outputting correct data on shift register with clocks tied from microcontroller
I want to be able to output correct data from the microcontroller to the 74HC595 shift register without using the clock lines separately. This schematic matches my ideas for 16 bits of data:
The ...
0
votes
1
answer
477
views
What happen to a dff(flip flop) without input?
I have this question but I don't know what happen to a dff without an input is it always 0 ?? like this picture below the 2nd dff hasn't any d ??? Also, if someone can draw the answer of the question ?...
0
votes
1
answer
51
views
Bidirectional data bus divided into nibbles not returning correct data - 8051
Since I have 10 I/O lines connected between two microcontrollers (AT89C4051 + AT89S52), I am trying to get away with elegant data transfer. Instead of spending months redoing an entire circuit board, ...
0
votes
1
answer
1k
views
What are the advantages of a wider bus in comparison to those of a higher clock frequency? [closed]
The aim is to increase data transfer rate.
I understand each may have some drawbacks and advantages. Frankly I'm not knowledgeable enough to know of many so I'd like some input from others. I know ...
- 23
0
votes
0
answers
45
views
Faster 8051 not taking the slower 8051 pin status correctly
I'm trying to do a rather simple data transaction between two 8051 microcontrollers using a variant of the SPI protocol. The large one is a slave and the small one is a master.
The documentation for ...
0
votes
1
answer
78
views
Can this circuit validate AT89Cx051 micro if best valued components are used?
This is a circuit I made in an attempt to validate that the 20-pin microcontroller is an AT89Cx051. and the correct LED will turn on based on how much ram the chip has.
While the first step is ...
user152879
0
votes
5
answers
403
views
Am I having an impedance issue in a cable between two devices? And if so, How can I resolve the issue?
I have two devices, device 1 and Device 2. The devices are approximately 60 feet apart connected to each other through a long cable. They communicate with each other at 2400bps synchronous serial ...
- 29
-1
votes
1
answer
1k
views
Clock and data vs rx and tx communication
I'm working on a project in which I have to make two pic10f200 microcontrollers communicate via serial communication lines. I know that with Arduino you interconnect the two board's rx and tx lines, ...
0
votes
2
answers
524
views
PCIe Data clocked refclk question
When only one clock is used in PCIe and let's assume the clock is connected to device A.
How does device B transfer data to device A. Device B does not have a clock source.
- 111
0
votes
2
answers
531
views
Can we observe addresses, data and other signals on the microcomputer buses by an oscilloscope, a LED or even an ordinary DC voltmeter?
Microcomputers are dynamic devices that are synchronized by a clock oscillator. So the signals (E, R/W, CS, A15-A0, D7-D0...) appear on their buses only for parts of a microsecond and, as the buses ...
- 17.5k
8
votes
3
answers
277
views
Theoretical Clock Question
Just a theoretical question more than anything. Does the clock signal have to have the same width between peeks and troughs?
A normal clock signal with data (below):
A random clock signal with data (...
- 831
6
votes
5
answers
9k
views
DSC Keybus Protocol
I'm plan to interface a atmel avr with my alarm system in home but the issue is DSC has a propriatary protocol between the keypad and the base. So has anyone messed with this before or can give me a ...
- 63