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Using external data memory with PIC24F/24H/dsPIC33F devices

Posted: 10 Sep 2008 ?? ?Print Version ?Bookmark and Share

Keywords:external memory? PMP module? I/O? application note? microcontroller?

This application note describes the methodology to use the Parallel Master Port (PMP) module to interface with external data memory; either external flash or external RAM. This application note also lists the APIs and describes how to implement different types of interfaces.

Using the PMP module, the memory devices with 64K locations (Kbytes or K words) can be interfaced

with no extra I/Os and software. This application note describes how to interface the memory devices with more than 64K locations using some I/O pins and provides the required APIs.

This application note describes the following topics:

? External Data Memory Interface Overview

? Functional Implementation

? Expansion Of External Memory

? Reference Code

View the PDF document for more information.





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