DS80C320-MCG Datasheet, PDF (10/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

High-Speed Microcontroller User’s Guide
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
REGISTER BIT 7
BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
SP
DPL
DPH
DPL1
DPH1
DPS
0
0
0
0
0
0
0
SEL
PCON
SMOD-0 SMOD0
-
-
GF1
GF0 STOP IDLE
TCON
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
TMOD
GATE
C/ T
M1
M0
GATE
C/ T
M1
M0
TL0
TL1
TH0
TH1
CKCON
-
-
T2M
T1M
T0M
MD2 MD1 MD0
P1
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
EXIF
IE5
IE4
IE3
IE2
-
-
-
-
SCON0
SM0/FE_0 SM1_0 SM2_0 REN_0 TB8_0 RB8_0 TI_0
RI_0
SBUF0
P2
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
IE
EA
-
ET2
ES0
ET1
EX1
ET0
EX0
SADDR0
P3
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
P3.1
P3.0
IP
-
-
PT2
PS0
PT1
PX1
PT0
PX0
SADEN0
STATUS
0
HIP
LIP
1
1
1
1
1
T2CON
TF2
EXF2 RCLK TCLK EXEN2
TR2
C/ T2 CP/ RL2
T2MOD
-
-
-
-
-
-
T2OE DCEN
RCAP2L
RCAP2H
TL2
TH2
PSW
CY
AC
F0
RS1
RS0
OV
F1
P
WDCON
-
POR
-
-
-
-
-
-
ACC
EIE
-
-
-
-
EX5
EX4
EX3
EX2
B
EIP
-
-
-
-
PX5
PX4
PX3
PX2
ADDRESS
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
90h
91h
98h
99h
A0h
A8h
A9h
B0h
B8h
B9h
C5h
C8h
C9h
CAh
CBh
CCh
CDh
D0h
D8h
E0h
E8h
F0h
F8h
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