28.1 Overview

The Configurable Custom Logic (CCL) is a programmable logic peripheral that can be connected to the device pins, to events or to other internal peripherals. This allows the user to eliminate logic gates for simple glue logic functions on the PCB.

Each Look-up Table (LUT) consists of three inputs:

• Truth table
• Optional synchronizer/filter
• Optional edge detector

Each LUT can generate an output as a user-programmable logic expression with three inputs. Inputs can be individually masked.

The output can be combinatorially generated from the inputs and can be filtered to remove spikes. Optional sequential logic can be used. The inputs of the sequential module are individually controlled by two independent, adjacent LUT (LUT0/LUT1) outputs, enabling complex waveform generation.