The 8051 Microcontroller and Embedded

Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

ACCESSING MEMORYSFR Registers and Their Addresses(cont’)

0A8H

Interrupt enable control

IE*

...

...

...

0B8H

Interrupt priority control

IP*

0B0H

Port 3

P3*

0A0H

Port 2

P2*

90H

Port 1

P1*

80H

Port 0

P0*

83H

High byte

DPH

82H

Low byte

DPL

Data pointer 2 bytes

DPTR

81H

Stack pointer

SP

0D0H

Program status word

PSW*

0F0H

B register

B*

0E0H

Accumulator

ACC*

Address

Name

Special Function Register (SFR) AddressesSymbol