1A2 Multiline Phone Control Board - PIC chip version, REV E


Revision E and E1

The benefits of using a CPU in REV-E allows for fewer parts, smaller board, and less labor during assembly,
all of which keeps the final board cost and build complexity down.

A "PIC PROGRAM" socket is available on the board allowing re-programming the PIC chip's firmware
without having to remove it from the board, using Microchip's own PICKit 4 USB chip programmer, a $50 device.



Board And Schematic

ExpressPCB Schematic:

Early "Art" Schematics: