PIC24FJ64GB004 Family Data Sheet 28/44-Pin, 16-Bit.
PIC24FJ32GB002 - 16-Bit Flash Microcontrollers
PIC24FJ64GB004 Family Data Sheet 28/44-Pin, 16-Bit, Flash Microcontrollers with USB On-The-Go (OTG) and nanoWatt XLP Technology 2010 Microchip Tech.