Specifications

mikroElektronika | Free Online Book | PIC Microcontrollers | Introduction: World of Microcontrollers
Fig. 0-17 Register
Special Function Register
In addition to the registers which do not have any special and predetermined function, every microcontroller has a number of registers whose
function is predetermined by the manufacturer. Their bits are connected (literally) to internal circuits such as timers, A/D converter, oscillators
and others, which means that they are directly in command of the operation of the microcontroller. Imagine eight switches which are in
command of some smaller circuits within the microcontroller- you are right! Special Function Registers (SFRs) do exactly that!
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