DS87C520_1 Datasheet, PDF (8/42 Pages) Dallas Semiconductor – EPROM/ROM High-Speed Micro

SPECIAL FUNCTION REGISTER LOCATIONS Table 2
* New functions are in bold
REGISTER BIT 7
BIT 6 BIT 5 BIT 4
BIT 3
BIT 2
P0
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
SP
DPL
DPH
DPL1
DPH1
DPS
PCON
TCON
TMOD
0
0
0
0
0
0
SMOD_0 SMOD0
-
-
GF1
GF0
TF1
TR1
TF0
TR0
IE1
IT1
GATE
C/ T
M1
M0
GATE
C/ T
TL0
TL1
TH0
TH1
CKCON
PORT1
WD1
P1.7
WD0
P1.6
T2M
P1.5
T1M
P1.4
T0M
P1.3
MD2
P1.2
EXIF
SCON0
IE5
IE4
IE3
SM0/FE_0 SM1_0 SM2_0
IE
REN_0
XT/ RG
TB8_0
RGMD
RB8_0
SBUF0
P2
IE
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
EA
ES1
ET2
ES0
ET1
EX1
SADDR0
SADDR1
P3
IP
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
-
PS1
PT2
PS0
PT1
PX1
SADEN0
SADEN 1
SCON1
SBUF1
ROMSIZE
PMR
STATUS
SM0/FE_1
SB7
-
CD1
PIP
SM1_1
SB6
-
CD0
HIP
SM2_1
SB5
-
SWB
LIP
REN_1
SB4
-
-
XTUP
TB8_1
SB3
-
XTOFF
SPTA1
RB8_1
SB2
RMS2
ALEOFF
SPTA1
TA
T2CON
T2MOD
TF2
EXF2 RCLK TCLK
EXEN2
TR2
-
-
-
-
-
-
RCAP2L
RCAP2H
TL2
TH2
PSW
CY
AC
F0
RS1
WDCON
SMOD_1 POR EPFI
PFI
RS0
WDIF
OV
WTRF
ACC
EIE
-
-
-
EWDI
EX5
EX4
B
EIP
-
-
-
PWDI
PX5
PX4
DS87C520/DS83C520
BIT 1
P0.1
0
STOP
IE0
M1
MD1
P1.1
RGSL
TI_0
P2.1
ET0
P3.1
PT0
TI_1
SB1
RMS1
DME1
SPTA0
C/ T2
T2OE
FL
EWT
EX3
PX3
BIT 0
P0.0
SEL
IDLE
IT0
M0
MD0
P1.0
BGS
RI_0
P2.0
EX0
P3.0
PX0
R1_1
SB0
RMS0
DME0
SPRA0
C/ RL2
DCEN
P
RWT
EX2
PX2
ADDRESS
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
90h
91h
98h
99h
A0h
A8h
A9h
AAh
B0h
B8h
B9h
BAh
C0h
C1h
C2h
C4h
C5h
C7h
C8h
C9h
CAh
CBh
CCh
CDh
D0h
D8h
E0h
E8h
F0h
F8h
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