PDB Driver for the MC9S08GW64

Overview

This application note provides a technical overview and software driver implementation for the Programmable Delay Block (PDB) module in the NXP MC9S08GW64 series microcontrollers. The PDB is primarily used to provide precisely controlled delays between a trigger source—such as an external trigger, software trigger, or comparator output—and the sample trigger inputs of one or more ADCs. The document details the software architecture, including pdb.h and pdb.c files, and defines API functions for initialization, setting module delays, configuring channel-specific delays for ADC pre-triggers, and handling software triggers. It also describes error conditions like sequence errors and provides guidance on integrating the driver into embedded applications.

Referenced Parts