DS80C320-MCG Datasheet, PDF (15/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

High-Speed Microcontroller User’s Guide
DS83C520/DS87C520 SPECIAL FUNCTION REGISTER RESET VALUES
Table 4-6
REGISTER BIT 7 BIT 6 BIT 5 BIT 4
BIT 3
BIT 2
BIT 1 BIT 0 ADDRESS
P0
1
1
1
1
1
1
1
1
80h
SP
0
0
0
0
0
1
1
1
81h
DPL
0
0
0
0
0
0
0
0
82h
DPH
0
0
0
0
0
0
0
0
83h
DPL1
0
0
0
0
0
0
0
0
84h
DPH1
0
0
0
0
0
0
0
0
85h
DPS
0
0
0
0
0
0
0
0
86h
PCON
0
0
-
-
0
0
0
0
87h
TCON
0
0
0
0
0
0
0
0
88h
TMOD
0
0
0
0
0
0
0
0
89h
TL0
0
0
0
0
0
0
0
0
8Ah
TL1
0
0
0
0
0
0
0
0
8Bh
TH0
0
0
0
0
0
0
0
0
8Ch
TH1
0
0
0
0
0
0
0
0
8Dh
CKCON
0
0
0
0
0
0
0
1
8Eh
P1
1
1
1
1
1
1
1
1
90h
EXIF
0
0
0
0
SPECIAL SPECIAL SPECIAL 0
91h
SCON0
0
0
0
0
0
0
0
0
98h
SBUF0
0
0
0
0
0
0
0
0
99h
P2
1
1
1
1
1
1
1
1
A0h
IE
0
0
0
0
0
0
0
0
A8h
SADDR0
0
0
0
0
0
0
0
0
A9h
SADDR1
0
0
0
0
0
0
0
0
AAh
P3
1
1
1
1
1
1
1
1
B0h
IP
-
0
0
0
0
0
0
0
B8h
SADEN0
0
0
0
0
0
0
0
0
B9h
SADEN1
0
0
0
0
0
0
0
0
BAh
SCON1
0
0
0
0
0
0
0
0
C0h
SBUF1
0
0
0
0
0
0
0
0
C1h
ROMSIZE
-
-
-
-
-
1
0
1
C2h
PMR
0
1
0
-
0
0
0
0
C4h
STATUS
0
0
0 SPECIAL
0
0
0
0
C5h
TA
1
1
1
1
1
1
1
1
C7h
T2CON
0
0
0
0
0
0
0
0
C8h
T2MOD
-
-
-
-
-
-
0
0
C9h
RCAP2L
0
0
0
0
0
0
0
0
CAh
RCAP2H
0
0
0
0
0
0
0
0
CBh
TL2
0
0
0
0
0
0
0
0
CCh
TH2
0
0
0
0
0
0
0
0
CDh
PSW
0
0
0
0
0
0
0
0
D0h
WDCON
0 SPECIAL
0
SPECIAL
0
SPECIAL SPECIAL 0
D8h
ACC
0
0
0
0
0
0
0
0
E0h
EIE
-
-
-
0
0
0
0
0
E8h
B
0
0
0
0
0
0
0
0
F0h
EIP
-
-
-
0
0
0
0
0
F8h
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