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Dear All My Friends I have a decorative light RGB leds it's have an IC SM16726 to Drive i need to control it with pic micro controller .... i face a two problems 1- the datasheet is chines language ... and i can't understand chines 2- the ACROBAT reader can't display the chines language pdf then i can't even see the timing (...)
Thank's Easyrider83, I had just read the timing diagram of LATCH cycle and its shows 140ns delay b/w LCD R/W. 136144 I had put 1ms delay and it solved my 2nd problem, i.e Controller isn't busy now :) But the 1st problem still remains i.e. The last character doesn't show up on the LCD. Any idea's about that ? [COLOR="silver"
A circuit an timing diagram would be needed to understand your problem. If setup and hold time violation can not be avoided(asychronous incoming signals) a synchronization with two flipflops in series could be used. The second flipflop uses a delayed clock, so that metastable states of the first flipflop a over. Enjoy your (...)
Introducing Waveme A new, free, GUI-based, digital timing diagram drawing software for Windows. Waveme is intended primarily for documentation purposes, where diagrams can be exported (stored) as image files (PNG, BMP and TIFF). Waveme can be used to draw waveforms (signals and buses), gaps, arrows (...)
Google has more answers than you'll get on here:
I have tried lot of debugging in code but still not getting result. The output (product and money change) is not changing from its initial state(zero). Requirements? Input and outputs? timing diagrams? State Transition diagram? Possibly some HDL code? Why do you make the assumption that someone here (...)
Using clock as data and generate clocks as in your example is likely to cause timing problems. It would be helpful if you specify the problem completely, e.g. with a timing diagram.
Hi there! I want to use the KAF1001-CCD for image processing ( ). I have some understanding problems with the clocking/timing of V1 and V2 according to set the integration time. In the datasheet on Page4 it is written: "Referring to the timing diagram, integration of charge is perfo
Hi, I attached the schematic of a gated ring oscillator and its timing and phase diagram. Having had this figure I have two questions. First of all, can anybody describe the phase behavior of the gated ring oscillator? How does the oscillator start oscillating from the initial phase at the rising edge of input data? (...)
Very surely, the problem hasn't to do with Nyquist theorem. But it's not clear what "sampling a low clock freq" exactly means for you. Can you show a timing diagram of the expected behaviour? In the general case, we would assume that both clocks are unrelated and don't necessarily have an exact integer frequency ratio, so the clock edges (...)
can anybody explain me how to calculate setup and holdup time of d flipflop? thank you in advance.. Hi, 116623 Above you can see is the timing diagram d flip-flop. It's relation between your CLK and input D. Normally, the value of tsetup and thold for d flip flop is given in the datas
113957113958 I dont know from where to start so guys help me with that. i am beginner in RTL design please help me with RTL(verilog) design of this block.i have some specification like ? X means a minimum size width for n and p channel transistor width for the transistors inside the invert
On the oscilloscope I can see the MOSI changing values, SCK is present and stable, CS is correct. Does this happen in read mode/write mode? Verify the timing and waveforms you saw in the oscilloscope with the timing diagram on page
He didn't ask a question. He gave you some information. 75 us is 3750 clock periods at 50 MHz (I'm assuming it isn't 50 milliHertz as the diagram indicates). So design a counter in Verilog that counts to 3750. When it gets there, it outputs a pulse, resets to zero and counts again. That will give you your 75us timing marker. r.b.
If you look at the read burst timing diagram then it will give you a clear picture I guess. 108457 Do you want to mean ARADDR, ARVALID, ARREADY, RVALID, RDATA, RREADY and RRESP all needs to be pipelined? Regards
Check this timing diagram...you will get some idea...106180
The second bit of datain IS one. Hence assigning 0111 to dataout is correct. The timing diagram seems to be correct for the code given. r.b.
Several approaches will improve your understanding of how to implement. 1. State diagram method :-P 2. timing diagram method :?: 3. Reverse Engineer method 8-) e.g. See how a CD4518 dual decade counter is different from a binary counter and consider similar gating structure for 00 to 59 ? (...)
Did you notice the timing diagram in the datasheet? You'll want to control the IL91531N input pins according to this scheme.
and apply it in 2 pin the step and direction to drive the bipolar stepper motor
How to design the digital logic from the timing diagram
for interfacing 24c16 with controller P89V51RD2 then you will need to use I2C protocol but this controller don't have inbuilt this protocol. so, you will need to design your own software I2C protocol. after refering datasheet of EEPROM then on base of timing diagram you can do it.
Hi Balamani, for DDR2 timing analysis, please follow datasheets(processor) timing diagram. you have to map timing delay between clock to DQS, then DQS to DQ. CLK to Address and Command. If you can share part name/ datasheet of processor. I can guide you in timing budget (...)
I want to build a circuit to get the signals state like in the timing diagram above. I have tried using a d flip flop connect to WR signal but i can get the OBF signal go low. I don't know how to make the out put buffer full signal go low by rising edge of WR and reset it to high by rising edge of ACk signal. Please help me. Thanks first (...)
you need to read the datasheet. You can find the timing diagram and then calculate by yourself.
Hi, I am making use of the PMOD AD1 (AD7476-12bit) for my application. I have used a FSM to interface the PMOD to the FPGA. From the timing diagram from the data sheets available, the ADC's poweron is dependent on the nCS signal. and I have a doubt that what would happen to the data converted (SDATA), if the nCS pin is pulled up even (...)
Hi, I am trying to interface a Cypress sl811hst-axc usb host / slave controller with an Altera Cyclone I FPGA, the cyperss chip isn't responding to my signals, I've tried to write an 8bit data to a random address of the chip by driving the controls lines, corresponding to the timing diagram provided with the chip datasheet, (...)
If you have the command order and a timing diagram for the bus, it should be fairly straight forward. You just write some controller for the chip and away you go. If you dont know where to start, I suggest a book on digital logic design and a VHDL tutorial.
I have a CMOS image sensor which has quite a large number of control signals which have specific timing constraints, most of which are hold times between certain sets of signals (I've attached 2 images which give you a sense). I'm using a Spartan 6 to generate the timing signals. My initial approach to this was to create a FSM which triggers counte
Hello, I have question about timing of SD card. Do you know what is the maximum time in writing process between CMD sending and data. In specification is diagram:84642 where P means one-cycle pull-up and * means repetition. So I understand it that after write command card waits for (...)
hi, i c't understand following details.ple any one explin me how its affect timing.? Both clock skew and clock latency affect the setup time and hold time of a register in a similar manner. A clock skew of say 500ps means: - The clock transitions from 0 to 1 at time 0 - The clock waveform would show a ramp (...)
It is going to pulse the output based on the input it is receiving. The datasheet does have a input signal versus output signal timing diagram. Your uP has to sample it and find the data being sent. The datasheet does have the frequency of oscillation mentioned too. When you say RX pin are you talking about UART port??
To interface the peripherals to the 8255 ports you will have to use one port(e.g. 8 bit) to generate the chip select for the different peripherals and the control signals needed. Each peripheral requires a specific read/write cycle you need to generate in software and meet their timing diagram. Could be a lot of effort (...)
You need to follow the initialization sequence for your LCD interface. timing has to be followed according to datasheet's timing diagram for LCD Enable, Register Select, Read Write & Data bits. You may use a state machine running on SPI clock. After initialization sequence data can be sent to LCD. Below is an example init seq for (...)
Hello everyone i want to learn how to program memory chips specially EEPROM , but i am not understanding timing diagram yet, so i want simplicity full introduction of memory structure from simple blocks (flip flops and so on) to advanced . I have HN58C256A parallel memory but i am confused on some terms in datasheet, (...)
Do you need to understand it or are you just curious? To use the timer you don't have to understand it. If you really want to understand it, get some information about logic circuits and a pen and some paper and draw a timing diagram. It's easy. (...)
Hi, Has any one worked with this TB62706BN LED driver. I read through the datasheet and followed the timing diagram but it gives no Output. Only the Serial out pin gives an output corresponding to the Serial input. Thanks.
In looking to the timing diagram ( ) it demands a 10us input pulse to start operation. An output port needs to be connected to this Trig-input of the sensor and the Echo-output needs to go to a micro input port. The 10us start pulse you need to create by a timing loop or a timer. The length of the p
Hi there, I am currently work on the VLSI design and I come across a little problem here on the SR flip flop. Here is the SR flip flop logic circuit: 67285 Here is the Digital wave form: 67286 I need to know how should I construct a timing diagram for this flip flop. The timing diagr
timing diagram is a graphical representation. It represents the execution time taken by each instruction in a graphical format. The execution time is represented in T-states. Below example will help consist almost all machine cycles.. timing diagram for STA 526AH. STA means Store Accumulator -The contents of the (...)
hi, I think you are talking about converting the spec in to Verilog model. Capturing timing constraints means, making sure that input signals are asserted and deasserted according to timing described in spec. If you see any sepc, there is always a timing diagram for operation supported. In case of (...)
Dear all, I designed an IC chip. I am preparing the test setup at the moment. The difficult task will be the generation of patterns to control all the functions of the chip. I need more then 30 different control signals (syncronised to the main clock). I have an FPGA board. Can anybody tell me if there are any tutorials explaining how to generete
i want to understand about static timing analysis. can anyone suggest some links or book
Are you sure you have specified XT in the fuse settings? and why not migrate your design to a 16F628A; cheaper, more meory, and no crystal required, unless your application is very timing critical. Regards, Anand Dhuru
For 8085 lower order address and data bus is multiplexed so for demultiplex the address and data bus we need Latch like 74LS373 we have to connect the latch to AD0-AD7 of 8085. there is an signal called ALE - Address Latch Enable as name suggest this signal will enable the latch for address. see the timing diagram ALE is (...)
Hi all, How the timing parameters - set up and hold time of a flip flop can be met, by using simple logic gates. Please try to explain with some example and diagram. Thanks
Hi, can anyone tell me how should i constraint a path from input to output - without any F.F between?... thanks!
wavedrom - Digital timing diagram in your browser - Google Project Hosting WaveDrom is Free and Open Source online digital timing diagram editor that uses JavaScript?, HTML5 and SVG to render WaveJSON input text description into vector graphics. The project is in progress. Any feedback (...)
wavedrom - Digital timing diagram in your browser - Google Project Hosting WaveDrom is Free and Open Source online digital timing diagram editor that uses JavaScript?, HTML5 and SVG to render WaveJSON input text description into vector graphics. The project is in progress. Any feedback (...)
hi, when there is positive edge clock and change in input cause the output to one... wat may be the circuit for this condition?????????