o. Basic circuit for PIC32MX2xxFxxxB and PIC24FJxxGB002 to work over USB with an 8.000000 MHz crystal resonator
Click on the schematic to enlarge it.
The basic circuit below will work with PIC32MX2xxFxxxB and PIC24FJxxGB002 microcontrollers including PIC32MX270F256B and PIC32MX250F128B and PIC24FJ64GB002. The quality and precision of the XTAL cystal is important. The circuit below has been tested to connect to a PC via USB 2.0 and it works perfectly. Use 8 MHz XTAL (XT) versions of firmware from the firmware pack provided in the Downloads section. VB.NET DLL (dynamics link library) and programming samples are also provided from Downloads section.
NOTE: Printed circuit board design for PIC32MX2xxFxxxB basic circuit is now available in PIC32MX250F128B - PCB - basic circuit - v1.0 - KiCAD - GERBER - 12.7.2014.zip file for KiCAD from Downloads section
Photos of the PCB. Click on the photos to enlarge them.
ALSO SEE:
- PC USB Projects PROGRAMMING GUIDE
- Basic circuit for PIC32MX2xxFxxxB and PIC24FJxxGB002 to work over USB with a 20 MHz external oscillator