Jdm Pic Programmer Circuit Diagram. When the switch 2 is on this multi pic programmer changes into vpp first mode. Pic programmer circuits i think the only simple thing you can do is buying a usb to rs232 converter or a pcmcia card wiith serial port.
This is a serial programmer works on the rs232 pc serial port known as jdm programmer. The programmer is powered from the serial port itself so theres no need to any external power supply. The programmer is powered from the serial port itself so theres no need to any external power supply.
Works with most of pic mcu.
It is used for loading the compiled source code hex into the microcontroller with a db 9 port. Connect the programmer to the pc with a male male a type usb cable. That u1 mark at the upper left of the 16f628 might mean pin 1 but it would be nasty to do the whole board and then realise that i had a mirror image of what i actually needed. Never connect them with gnd line of a serial port.