Comments:
All resistors are 1/4W.The circuit is powered by 9…15V DC or AC. When In Circuit Programming (ISP) connectors are used, is possible the programmer to be powered from targets power source. Diodes D2 and D6 protect the regulator LM7805, when targets power is used.
‘ XTAL JUMP ‘ is used to cut XTAL when the AVR has internal RC oscillator enabled.
For more detail: Ponyprog Circuit for AVR & PIC16F84 using microcontroller
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