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A Process statement can be synthesised into combinational circuit and sequential circuit. Is there any general rule to determine which kind of circuit it will be synthesised into?
An example:
p1:Process(Clock)
Begin
If rising_edge(Clock) then
Case State Is
When S0=>...
When should I use I2C?
I know I2C is very hot now.
But I don't quite understand that.
What's the benefit of I2C? Just reduce I/O pins?
What's the disadvantage?
If I need high speed AD sampling(say, >500KSPS),
can I2C transfer the data to microcontroller quickly enough?
I'm a newbie on...
Hello, everyone.
I'm a newbie on microcontroller and meet with a problem.
I'm using AVR Mega16 which has 32 I/O Pins, I often fell it's not enough at all!
4*4 Matrix Keyboard : 8 pins
16*2 LCD: 11 pins
T0/T1,INT0/INT1 left for further used... 4 pins
Now, left only 9 I/O pins....
If I want to...
sine wave look up table dac
I generate the LUT with Turbo C, it's very easy.
I am just too busy yesterday so ask for your help,
and I'm now free so I make a program by myself.
Thanks all the same.
Here is my code, if anyone needs it, modify it as you wish.
Compiler Turbo C 2.0
It's for 8 bit...
look-up table sin
Hi,everyone.
Where can I find a look up table for sine wave and cos wave?
I want to make a function(wave) generator. I use Flex10K10(has 6144bit RAM) and a 8 bit DAC.
But the problem is where can I get a LUT for sine wave and cos wave?
Can you help me.
Thanks in advance.
flex10k schematic
Hi everyone. I'm a newbie on PCB, and I need a Flex10K Board badly.( simple board: can configure EPC2LC20 and Flex10K ). I don't have any experience of designing PCB. so i need some example to follow.
If you have such board, would you please send me the scheme and PCB...
Thank you all.
Thank you for your help.
I never expected so many valuable answers.
I'm now busy preparing my final exams, so I have no time to try the methods you gave me. I will try them out after my final exams.
electronrancher:
Thank you for your suggestion.
In fact, I added a resistor to...
Thank you for your help. But ...
Thank you for your help.
I tried every method to solve the problem, including adding a hysteresis, but the result seems not as good as expected.
Should I solve it in the digital part of the circuit (say, delay the signal until it's stable.)? I'm now using VHDL...
I met with a strange problem these days.
I used a LM311 to make a zero-cross detector,I found that when the frequency is high(say,40KHz), the rising edge of the TTL output is very neat(I adjusted the oscilloscope to 100ns/Div to look close to the rising edge), but when it comes to low...
winavr sucks
WinAVR is very good, and is updated almost every month.
The only problem is WinAVR doesn't have it's own IDE, and you have to write"makefile", so it maybe difficult for beginner. But , writing "makefile" is not very difficult (you can just modify the sample makefile a bit), and you...
Hi,everyone. I'm a newbie on circuit design. And I met some problems when I connected the digital circuit to the analog circuit. That's Noise! I have fought for noise for a week but the achievement was not as great as I expected. The digital noise affected the whole circuit greatly especially...
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