Intel MCS 51 User Manual

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MCS@-51PROGRAMMER’SGUIDE AND INSTRIJCTlON SET
SPECIAL FUNCTION REGISTERS:
Table 1containsa list of all the SFRs end their addressee.
ComparingTable 1and Figure5showsthat all ofthe SFRsthat are byteand bit addressableare locatedonthe first
col~n of-thediagramin Figure 5.
Symbol
*ACC
*B
“Psw
SP
DPTR
DPL
DPH
*PO
*P1
●P2
*P3
*IP
*IE
TMOD
“TCON
*+ T2CON
THO
TLO
TH1
TL1
+TH2
+TL2
+RCAP2H
+RCAP2L
●SCON
SBUF
Table 1
Name
Accumulator
B Register
ProgramStatusWord
Stack Pointer
Data Pointer2 Bytes
LowByte
HighByte
Porto
Port1
Port2
Port3
InterruptPriorityControl
InterruptEnableControl
Timer/Counter Mode Control
Timer/Counter Control
Timer/Counter2 Control
Timer/CounterOHighByte
Timer/CounterOLowByte
Timer/Counter 1 HighByte
Timer/Counter 1 LowByte
Timer/Counter2 HighByte
Timer/Counter2 LowByte
T/C 2 CaptureReg. HighByte
T/C 2 CaptureReg. LowByte
SerialControl
SerialData Buffer
PCON
PowerControl
= Bitaddreaaable
Address
OEOH
OFOH
ODOH
81H
82H
83H
80H
90H
OAOH
OBOH
OB8H
OA8H
89H
88H
OC8H
8CH
8AH
8DH
8BH
OCDH
OCCH
OCBH
OCAH
98H
99H
87H
+ = 8052
only
2-8

Intel MCS 51 Specifications

General

Brand	Intel
Model	MCS 51
Category	Microcontrollers
Language	English