This datasheet details the I/O ports, control registers, peripheral multiplexing, and Peripheral Pin Select (PPS) features for the PIC24F family of…
This document serves as a reference guide for the I/O ports within the PIC24F Family Reference Manual. It covers the fundamental operation of general-purpose I/O pins and their ability to be multiplexed with various peripheral functions. The text explains the specific registers used to control port behavior, including data direction, data latching, and open-drain configurations.
| Reset State for TRIS bits | All port pins are defined as inputs |
|---|---|
| TRIS bit logic | 1 = Input, 0 = Output |
| ODC bit logic | 1 = Open-drain, 0 = Normal |
The TRISx register determines whether each pin associated with the I/O port is configured as an input or an output.
The LATx register eliminates problems associated with read-modify-write instructions by reading values from the port output latches instead of the I/O pins.
The ODCx register configures each I/O pin for either normal digital output or open-drain output.