Specifications

mikroElektronika | Free Online Book | PIC Microcontrollers | Chapter 1: PIC16F887 Microcontroller - Device Overview
the PC and a simple electronic device called the Programmer.
Fig. 1-5 ROM Memory Consept
EEPROM Memory
Similar to program memory, the contents of EEPROM is permanently saved, even the power goes off. However, unlike
ROM, the contents of the EEPROM can be changed during operation of the microcontroller. That is why this memory (256
locations) is a perfect one for permanently saving results created and used during the operation.
RAM Memory
This is the third and the most complex part of microcontroller memory. In this case, it consists of two parts: general-
purpose registers and special-function registers (SFR).
Even though both groups of registers are cleared when power goes off and even though they are manufactured in the same
way and act in the similar way, their functions do not have many things in common.
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