2.1 Basic Connection Requirements
Getting started with the PIC16(L)F18455/56 family of 8-bit microcontrollers requires attention to a minimal set of device pin connections before proceeding with development.
The following pins must always be connected:
- All VDD and VSS pins (see 2.2 Power Supply Pins)
- MCLR pin (see 2.3 Master Clear (MCLR) Pin)
These pins must also be connected if they are being used in the end application:
- PGC/PGD pins used for In-Circuit Serial Programming™ (ICSP™) and debugging purposes (see 2.4 In-Circuit Serial Programming™ (ICSP™) Pins)
- OSCI and OSCO pins when an external oscillator source is used (see 2.5 External Oscillator Pins)
Additionally, the following may be required:
- VREF+/VREF- pins are used when external voltage reference for analog modules is implemented
The minimum mandatory connections are shown in the figure below.
