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Internal Data Memory and Special Function Register Layout Diagram
HEX
0FF
USER DATA RAM
8 0
7 F
USER DATA RAM
3 0
2 F
7F
BIT RAM
2 0
7
1 F
R7
BANK3
1 8
R0
1 7
R7
BANK2
1 0
R0
0 F
R7
BANK1
0 8
R0
0 7
R7
BANK0
0 0
R0
IOCON
B
ACC
PSW
TH2
TL2
RCAP2H
RCAP2L
T2CON
IP
P3
IE
P2
SBUF
SCON
P1
TH1
TH0
TL1
TL0
TMOD
TCON
PCON
DPH
DPL
SP
P0
78
0
MSM80C154S/83C154S
FFH~F8H
248(0F8H)
F7H~F0H
240(0F0H)
E7H~E0H
224(0E0H)
D7H~D0H
208(0D0H)
205(0CDH)
204(0CCH)
203(OCBH)
202(0CAH)
CFH~C8H
200(0C8H)
BFH~B8H
184(0B8H)
B7H~B0H
176(0B0H)
AFH~A8H
168(0A8H)
A7H~A0H
160(0A0H)
153( 99H)
9FH~98H
152( 98H)
97H~90H
144( 90H)
141( 8DH)
140( 8CH)
139( 8BH)
138( 8AH)
137( 89H)
8FH~88H
136( 88H)
135( 87H)
131( 83H)
130( 82H)
129( 81H)
87H~80H
128( 80H)
BIT ADDRESSING
DATA ADDRESSING
279
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