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Includes clock & data filter,
Vpp voltage divider for modern PIC microcontrollers (eg USB PIC 18F2455/4455).
Programming voltage (Vpp) is applied to the MCLR pin to place the PIC in programming mode.
Older PICs (12F/16F/some 18Fs) require a Vpp of 13 volts.
Newer PICs (such as the USB enabled 18F2455/4455)
have a lower Vpp of 12.5 volts. A voltage divider was added to the JDM2 design to provide 12.5 volts from the original 13 volt output.
A diode prevents leakage through the voltage divider when it is bypassed.
Vpp is selectable by the three pin jumper at the lower left of the programmer.
This programmer has been tested with the following PICs:
12F508
12F629
12F683
16F684
16F84(a)*, 16F628(a)*
16F737, 18F2455
16F74, 18F4455
Original and 'A' revision OK.
CD with software included
FREE POSTAGE SA ONLY