![]() Since the SFRs are a part of the Internal RAM Structure, you can access SFRs as if you access the Internal RAM. Each SFR has one Byte Address and also a unique name which specifies its purpose. ![]() Out of these 128 Memory Locations (80H to FFH), there are only 21 locations that are actually assigned to SFRs. If you observe in Internal RAM Structure, the Address Space from 80H to FFH is allocated to SFRs. The 8051 Microcontroller Special Function Registers act as a control table that monitor and control the operation of the 8051 Microcontroller. Categories of 8051 Microcontroller Special Function RegistersĨ051 Microcontroller Special Function Registers (SFRs). ![]() List of 8051 Microcontroller Special Function Registers.8051 Microcontroller Special Function Registers (SFRs).
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