Summary
Microchip Technology Inc. offers a wide variety of cost-effective PIC® microcontrollers without an internal data EEPROM. Many applications store nonvolatile information in the Flash program memory using table write and read operations. Applications that need to frequently update this data may have greater endurance requirements than the specified Flash endurance for the device. The alternate solution of using an external, serial EEPROM device may not be appropriate for cost-sensitive or pin-constrained applications.
Typical Applications
The Data EEPROM Emulation Library is typically a small part of a larger system. An system that required data to be update 10 of thousands of times or more can
benefit from the use of Microchip’s Data EEPROM Emulation library. Typical applications that would require EEPROM emulation include applications that require to store user definable parameters, frequently updated calibration or adjustment parameters, or saving parameters when a device is shut down.
Devices Supported
The Microchip EEPROM Emulation Libraries support the PIC18 devices, 16-bit PIC24F, PIC24H, and dsPIC33 devices and 32-bit PIC32 devices.
The DEE library implementation is based on the App Note AN1095 - Emulating Data EEPROM for PIC18 and PIC24 Microcontrollers and dsPIC® Digital Signal Controllers. Refer the App Note for more information on library implementation for advanced debugging.
The Data EEEPROM Emulation (DEE) library for PIC24 MCUs and dsPIC33 DSCs is now supported in MPLAB® Code Configurator (MCC). For more information and downloads, visit 16-bit Data EEPROM Emulation Library (DEE) for PIC24 MCUs and dsPIC33 DSCs
