DS80C320-ECD DALLAS [Dallas Semiconductor], DS80C320-ECD Datasheet - Page 10

• Manufacturer Part Number: DS80C320-ECD
• Description: High-Speed Microcontroller User Guide
• Manufacturer: DALLAS [Dallas Semiconductor]

SPECIAL FUNCTION REGISTERS
The High-Speed Microcontroller, like the 8051, uses Special Function Registers (SFRs) to control
peripherals and modes. In many cases, an SFR will control individual functions or report status on
individual functions. The SFRs reside in register locations 80h-FFh and are reached using direct
addressing. SFRs that end in 0 or 8 are bit addressable.
All standard SFR locations from the original 8051 are duplicated in the High-Speed Microcontroller, with
several additions. Following tables illustrate the locations of the SFRs for various devices. Following
each tables a description of the default reset conditions of all SFR bits. The following section is a
detailed description of each Special Function Register.
DS80C310 SPECIAL FUNCTION REGISTER LOCATIONS Table 4-1
SP
DPL
DPH
DPL1
DPH1
DPS
PCON
TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
P1
EXIF
SCON0
SBUF0
P2
IE
SADDR0
P3
IP
SADEN0
STATUS
T2CON
T2MOD
RCAP2L
RCAP2H
TL2
TH2
PSW
WDCON
ACC
EIE
B
EIP
REGISTER
SM0/FE_0
SMOD-0
GATE
BIT 7
P1.7
P2.7
P3.7
TF1
TF2
IE5
CY
EA
0
0
-
-
-
-
-
-
SMOD0
SM1_0
BIT 6
EXF2
C/ T
POR
TR1
P1.6
P2.6
P3.6
HIP
IE4
AC
0
-
-
-
-
-
-
SM2_0
RCLK
BIT 5
T2M
P1.5
P2.5
P3.5
ET2
TF0
PT2
IE3
LIP
M1
F0
0
-
-
-
-
-
REN_0
TCLK
BIT 4
T1M
P1.4
P2.4
P3.4
TR0
RS1
10 of 175
ES0
PS0
M0
IE2
0
1
-
-
-
-
-
EXEN2
TB8_0
GATE
BIT 3
T0M
GF1
P1.3
P2.3
ET1
P3.3
EX5
PX5
PT1
RS0
IE1
0
1
-
-
-
RB8_0
BIT 2
MD2
C/ T
P1.2
P2.2
EX1
P3.2
EX4
GF0
PX1
TR2
PX4
IT1
OV
0
1
-
-
-
High-Speed Microcontroller User’s Guide
BIT 1
STOP
C/ T2
T2OE
MD1
TI_0
P1.1
P2.1
P3.1
EX3
ET0
PX3
PT0
IE0
M1
F1
0
1
-
-
CP/ RL2
DCEN
BIT 0
IDLE
MD0
RI_0
P1.0
P2.0
EX0
P3.0
PX0
EX2
PX2
SEL
IT0
M0
1
P
-
-
ADDRESS
CAh
CDh
8Ah
8Dh
A0h
A8h
A9h
CBh
CCh
D0h
D8h
8Bh
8Ch
8Eh
B0h
B8h
B9h
C5h
C8h
C9h
E0h
E8h
81h
82h
83h
84h
85h
86h
87h
88h
89h
90h
91h
98h
99h
F0h
F8h