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Recent content by saeedazari

  1. S

    [PIC] PIC12F519 communication protocol

    Yes it is a dongle to unlock a unit. Here is the the picture: If so, the CPU is just sending clock signals?
  2. S

    [PIC] PIC12F519 communication protocol

    Thanks for your reply. Pin 6 & 7 are being used on the PCB. PIN 6 is RB1/ICSPCLK and PIN 7 is RB0/ICSPDAT. The PIC does not have a lot of data to send to the mainboard. Maybe just some numbers and after that, mainboard does not need the PIC anymore.
  3. S

    [PIC] PIC12F519 communication protocol

    Thanks for your replies. I took some screen-shots from the Saleae analyzer: I don't think it is following a specific protocol either as some part of the data don't seem to have a special standard.
  4. S

    [PIC] PIC12F519 communication protocol

    Hi everyone, I have a PIC12F519 uc based board which works as something like usb device. It communicates with the main board with 2 ports (RB0/ICSPDAT & RB1/ICSPCLK) and i have watched its' protocol via saleae logic analyzer. The protocol seems to be I2C but after looking at data it does not...
  5. S

    circuit design for a specific current

    Thanks for your responses... actually the problem was with the capacitor selected in OrCAD. The one which worked is named c/ANALOG_P and also i found that i have to allocate 15 seconds to run time because time constant of this circuit is 2.5 sec, and it takes 15 seconds for the capacitor to...
  6. S

    circuit design for a specific current

    Is there any limit in choosing R and C in an RC circuit? because when i choose 10 for resistor and 250mf for capacitor... the circuit response is really unlike other regular rc circuits in pspice and proteous simulations and by changing the values of these elements it will form an exp curve.
  7. S

    circuit design for a specific current

    Thanks for your answer, it really helped me to be sure about the design. And i changed the capacitor to 250mF. :wink:
  8. S

    circuit design for a specific current

    hi everyone, i want to design a circuit with a capacitor and some other elements in order to have a voltage source with 1+0.6 e(-0.4t) current. maybe it is a RC circuit like below but i am not sure of the design. thanks in advance
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