PIC18F8627PIC18F8628 PIC18F8680 PIC18F86J10 PIC18F86J11 PIC18F86J15 PIC18F86J16 PIC18F86J50 PIC18F86J55 PIC18F86J60 PIC18F86J65 PIC18F86J72 PIC18F86J90 PIC18F86J93 PIC18F86J94 PIC18F86J99 PIC18F86K22 PIC18F86K90 PIC18F8720 PIC18F8722 PIC18F8723 PIC18F87J10 PIC18F87J11 PIC18F87J50 PIC18F87J60 PIC18F87J72 PIC18F87J90 PIC18F87J93 PIC18F87J94 PIC18F87K22 PIC18F87K90 PIC18F95J94 PIC18F96J60 PIC18F96J65 PIC18F96J94 PIC18F96J99 PIC18F97J60 PIC18F97J94
All VSS and VDD pins must be connected. Even if one of these pins is not connected, programming may fail.
Since NSDSP is a Low-Voltage Programmer (LVP), it can only program PIC devices if LVP configuration bit is enabled. Fresh (unprogrammed) devices have LVP bit set and therefore they can be programmed. It is impossible to disable LVP bit during LVP programming, but if the device has been previously programmed with HVP programmer, the LVP bit may have been disabled.
When brown-out is enabled with BOREN configuration bit, LVP is only possible when the VDD voltage is above the brown-out threshold.
These limitations may be avoided with High-Voltage Programming (HVP), however NSDSP requires an external circuit for HVP.
NSDSP firmware contains all the necessary provisions for debugging PIC18F8627 and may be debugged when debugging software becomes available.
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