The thing is for some PIC18F, such as PIC18Fxxx0/xxx5, the maximum Vpp is 12.5 V, or the maximum Vpp of PIC18F18Fxx10/xx90 is 12V. Can you use 13V zener in those cases?seadolphine2000 said:Thanks namqn for your help, but I've already used it so many times with my PIC16F84A and it works fine. However, If you mean by "don't have a voltage clamper for Vpp" that the voltage at Vpp may increase, I can use a 13v. zener like the one at VDD.
Thanks again for your help.
For the PIC18F2550 and PIC18F4550, you should not go over the maximum Vpp specified in the Programming Specification.tocal09 said:I use JDM programer version in olimex.com . And I used it to program my 18F252,2550,4550. It worked. My Vpp voltage in programmer is about 13,4V. If you want, you could test with Vpp increasing step by step.
@namnq: you tested many progammer, do you know about my case?
This one could only do LVP (Low-Voltage Programming), with Vpp = Vdd when programming/verifying. If you at sometime need to erase the chip (e.g., for clearing protection bits), then you would need another high voltage programmer (Vpp = Vihh, min = Vdd + 4.0 V, when programing/verifying).seadolphine2000 said:Hi,..
I found this programmer. Please, I need to know if it will work with my PIC18F4450 specifically.
Thanks very much for all your help.
seadolphine2000 said:Hi..
I know it might be a silly question, but it's important for me.
Can anyone tell me if this programmer could work with all PIC types.?
I mean can I use this programmer with PIC18F series?
Thanks very much for all your help.
Try the Inchworm ICD2 programmer on my site. It's far better than most simple programmers and is supported in MPLAB
PS
I'm working on a robot kit with chassis. Uses the 16F886 or 18F2525.
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