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Have anyone used the ICD2 from this link h**p://icd2clone.narod.ru. Can I use it with a 3.3v target and 5v target with MPLAB 6.6. Please advice. Thank you.
Have anyone used the ICD2 from this link https://icd2clone.narod.ru. Can I use it with a 3.3v target and 5v target with MPLAB 6.6. Please advice. Thank you.
In original ICD2 **broken link removed** from microchip when the resistance of MCP41010 is at its highest value Vprog is at its lowest value and viceversa, but in CD´s design when the resistance of MCP41010 is at its highest value Vprog is also at its highest value and viceversa.
Can anyone explain that?
In original ICD2 **broken link removed** from microchip when the resistance of MCP41010 is at its highest value Vprog is at its lowest value and viceversa, but in CD´s design when the resistance of MCP41010 is at its highest value Vprog is also at its highest value and viceversa.
Can anyone explain that?
What the Q1,Q2,Q3,Q4,Q5,Q6 and diode the ICD2.schdoc
tellhun
joe123 said:
Hello All... Now I hope I dont get shot for asking this question....
Ive decided to build an ICD2. I have read and read this forum up and down and gotten a fairly good understanding of what I need to do..
1. I will be using a 16F877A thus I must program with BootLoader.hex (also known as BootLoader16F877A.hex). WRT set to enabled and HS as the oscillator configuration. I can then automatically update with new frimware from MPLAB.
2. I have a set of about 10 different schematics downloaded from this and other threads. Unfortunetally, I cannot make sence of which one is the most curent and functional (I now many of the early versions had minor errors which were copied into other members versions). I am not interested in USB since it is too hard to get a hold of the Cypress USB IC.. Can someboody PLEASE direct me to the most current shematic..
I assembled the board with exactly same components.
But I see +7.5 / -7.5 at MAX232's pin2 and pin6.
I corrected the C12 also, nothing changed...
PC can connect to ICD and download firmware. But when I try to program a part at target, it fails. I read 0x1ff part number even there is no target chip installed.
Charge pumps are running.
I see ~10V at the input of LM317. And When I try to program a part, I see Vpp is ~6V. What's wrong?
Hi,
Which board did you used ???
You must have ~15V at the LM317 entry. Look at your LM317 connections, be sure the diodes from the charge pump are correctly mounted.
@Crazyduck
Can you please clear up (regarding your schematics), what is the correct polarity for the capacitor C12 (pins 4,5 of MAX232) and also the capacitor C10 (pin 2 of MAX232 to GND?). Kindly please explain us what is correct as you have uploaded several schematics (pdf,protel etc etc) and in all of them pin 4 of MAX232 has the minus (-) of 10uf. However in this same thread (above), others have said that this is wrong!
Also regarding the capacitor C10 from pin2 of MAX232 (10uf), in your schematics always plus (+) is at pin2 and minus (-) is connected to GND. Is this correct ? Incidentaly mcu.cz has same polarity in their schematics for cpacitors C10 and C12! Can you please clear this small issue?
Ooops I've not see this problem. I just look on the max232 datasheet, and C12 is inverting !!!
But not C10.
I'll take a look at my boards, and change C12's polarity if it's wrong.
I'll said my results.
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