Isolation Between MCP39F501 and PIC® Microcontroller During Development
Refer to the "MCP39F501 Power Monitor Demonstration Board User's Guide". The schematics provide some ideas on isolation. We also recommend designing a board such that the same PCB can be used for both development and the final product.
The difference between development and production can be determined by what components you populate the PCB with (i.e., the BOM differentiates between development and production units). This gives the flexibility to develop with a board which is very similar to the final production board and to move to the lower cost production BOM, once development has been completed.