
DS80C310
7 of 22
SPECIAL FUNCTION REGISTERS (SFRs)
Special Function Registers control most special features of the DS80C310. The High-Speed
Microcontroller User’s Guide contains descriptions of all the SFRs. Functions that are not part of the
standard 80C32 are in bold.
Table 1. Special Function Registers
REGISTER
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ADDRESS
SP
—
81h
DPL
—
82h
DPH
—
83h
DPL1
—
84h
DPH1
—
85h
DPS
0
SEL
86h
PCON
SMOD
SM0D0
—
GF1
GF0
STOP
IDLE
87h
TCON
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
88h
TMOD
GATE
C/
T
M1
M0
GATE
C/
T
M1
M0
89h
TL0
—
8Ah
TL1
—
8Bh
TH0
—
8Ch
TH1
—
8Dh
CKCON
—
T2M
T1M
T0M
MD2
MD1
MD0
8Eh
P1
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
90h
EXIF
IE5
IE4
IE3
IE2
—
91h
SCON
SMO/FE
SM1
SM2
REN
TB8
RB8
TI
RI
98h
SBUF
—
99h
P2
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
A0h
IE
EA
—
ET2
ES0
ET1
EX1
ET0
EX0
A8h
SADDR0
—
A9h
P3
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
P3.1
P3.0
B0h
IP
—
PT2
PSO
PT1
PX1
PT0
PX0
B8h
SADEN0
—
B9h
STATUS
0
HIP
LIP
1
C5h
T2CON
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/
T2
CP/
RL2
C8h
T2MOD
—
T2OE
DCEN
C9h
RCAP2L
—
CAh
RCAP2H
—
CBh
TL2
—
CCh
TH2
—
CDh
PSW
CY
AC
F0
RS1
RS0
OV
FL
P
D0h
WDCON
—
POR
—
D8h
ACC
—
E0h
EIE
—
EX5
EX4
EX3
EX2
E8h
B
—
F0h
EIP
—
PX5
PX4
PX3
PX2
F8h