The PIC KIt 2 Microcontroller Programmer can program PIC microcontrollers that are installed in an application circuit using In-Circuit Serial Programming (ICSP). In-Circuit Serial Programming (ICSP) ...

The program memory is written using Microchip's In-Circuit Serial Programming (ICSP) technology. ICSP uses only two I/O pins. Designers, then, can program the MCU after the chip has been installed.