Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
OS_TMR_TICK is used as timer correction constant for some AVR & PIC timers.
Macro OS_Is_Timer() is used for PIC while separating system timer interrupt from other interrupts. They are optional just don't use them.
slow down programming icd2
74HC126 and 74HCT126 will work with 5V targets good enough, but without them icd will work even better. For 2V - 3V tagets you have to use 74AHC126, 74VHC126 etc. They have 5V tolerant inputs when Vcc = 2V - 6V.
But it's not your case (20MHz @ 4.5V - 5V)
parametre rs232 icd2
I'm using 16F877A @ 20MHz just now. It's working fine. May be you are using too long cabel?
Schematic - icd2 clone 3 2 from https://icd2clone.narod.ru
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
