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MSM80C154S/83C154S/85C154HVS
56
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
0FFH~0F8H
0F7H~0F0H
0E7H~0E0H
0D7H~0D0H
0CFH~0C8H
0BFH~0B8H
0B7H~0B0H
0AFH~0A8H
0A7H~0A0H
9FH~98H
97H~90H
8FH~88H
87H~80H
248 (0F8H)
240 (0F0H)
224 (0E0H)
208 (0D0H)
205 (0CDH)
204 (0CCH)
203 (0CBH)
202 (0CAH)
200 (0C8H)
184 (0B8H)
176 (0B0H)
168 (0A8H)
160 (0A0H)
153 (99H)
152 (98H)
144 (90H)
141 (8DH)
140 (8CH)
139 (8BH)
138 (8AH)
137 (89H)
136 (88H)
135 (87H)
131 (83H)
130 (82H)
129 (81H)
128 (80H)
SPECIAL FUNCTION REGISTERS
USER DATA RAM
USER DATA RAM
BIT RAM
7F
7
78
0
BANK 3
R7
R0
BANK 2
R7
R0
BANK 1
R7
R0
BANK 0
R7
R0
20
1F
18
17
10
0F
08
07
00
30
2F
REGISTER INDIRECT ADDRESSING
80
7F
BIT ADDRESSING
DATA ADDRESSING
HEX
OFF
Figure 4-1 Data memory and special function register layout