Altera 7A Designing with Low-Level Primitives User Guide

About this manual

This document serves as a user guide for the Altera 7A series, detailing the use of low-level primitives within the Quartus II software environment. It describes how designers can instantiate specific architectural building blocks to dictate hardware implementation, optimize resource utilization, and improve timing results. The guide covers various primitives such as LCELL, DFF, and I/O buffers.

What's inside

• About this User Guide
• Typographic Conventions
• Introduction
• Low-Level Primitive Examples
• LCELL Primitive
• Using I/Os
• Using Registers in Altera FPGAs
• Creating Memory for Your Design
• Look-Up Table Buffer Primitives
• Primitive Reference

Frequently asked questions

What is the purpose of low-level primitives?

Low-level primitives are small architectural building blocks that assist in creating designs by allowing control over the hardware implementation for a cone of logic.

How does the LCELL primitive function?

The LCELL primitive allows you to break up your design into manageable parts and prevents the Quartus II synthesis engine from merging logic.