DS80C320 Datasheet, PDF (20/38 Pages) Dallas Semiconductor – High-Speed/Low-Power Micro

DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
SPECIAL-FUNCTION REGISTERS
Most special features of the DS80C320/DS80C323 or 80C32 are controlled by bits in the SFRs, allowing
the devices to add many features but use the same instruction set. When writing software to use a new
feature, the SFR must be defined to an assembler or compiler using an equate statement. This is the only
change needed to access the new function. The DS80C320/DS80C323 duplicate the SFRs that are
contained in the standard 80C32. Table 5 shows the register addresses and bit locations. Many are
standard 80C32 registers. The High-Speed Microcontroller User’s Guide describes all SFRs.
Table 5. Special-Function Register Locations
REGISTER
SP
DPL
DPH
DPL1
DPH1
DPS
PCON
TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
P1
EXIF
SCON0
SBUF0
P2
IE
SADDR0
SADDR1
P3
IP
SADEN0
SADEN1
SCON1
SBUF1
STATUS
TA
T2CON
T2MOD
RCAP2L
RCAP2H
TL2
TH2
PSW
WDCON
ACC
EIE
B
EIP
BIT 7
0
SMOD_0
TF1
GATE
WD1
P1.7
IE5
SM0/FE_0
P2.0
EA
P3.7
—
SM0/FE_0
PIP
TF2
—
CY
SMOD_1
—
—
BIT 6
0
SMOD0
TR1
C/ T
WD0
P1.6
IE4
SM1_0
P2.6
ES1
P3.6
PS1
SM1_0
HIP
EXF2
—
AC
POR
—
—
BIT 5
0
—
TF0
M1
T2M
P1.5
IE3
SM2_0
P2.5
ET2
P3.5
PT2
SM2_0
LIP
RCLK
—
F0
EPFI
—
—
BIT 4
0
—
TR0
M0
T1M
P1.4
IE2
REN_0
P2.4
ES0
P3.4
PS0
REN_0
1
TCLK
—
RS1
PFI
EWDI
PWDI
BIT 3
0
GF1
IE1
GATE
T0M
P1.3
—
TB8_0
P2.3
ET1
P3.3
PT1
TB8_0
1
EXEN2
—
RS0
WDIF
EX5
PX5
BIT 2 BIT 1 BIT 0
0
0
SEL
GF0 STOP IDLE
IT1
IE0
IT0
C/ T
M1
M0
MD2
P1.2
RGMD
RB8_0
MD1
P1.1
RGSL
TI_0
P2.2
P2.1
EX1
ET0
MD0
P1.0
BGS
RI_0
P2.0
EX0
P3.2
P3.1
P3.0
PX1
PT0
PX0
RB8_0
1
TI_0
1
RI_0
1
TR2
C/ T2 CP/ RL2
—
T2OE DCEN
OV
FL
WTRF EWT
EX4 EX3
PX4 PX3
P
RWT
EX2
PX2
ADDRESS
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
C5h
C7h
C8h
C9h
CAh
CBh
CCh
CDh
D0h
D8h
E0h
E8h
F0h
F8h
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