Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
7.8
8051 Control Registers
7.8.1
Special Function Registers (SFRs)
The high-performance 8051 includes SFRs to support the extended interrupt unit, timer 2, and Bit-wise
Addressable 8051 SFR GPIOs. (See Appendix B "High-Performance 8051 Extended Interrupt Unit") The
high-performance 8051 does not support the MISZ register.
Table 7.6 8051 Control Registers
SFR
REGISTER
NAME
VCC1
ADDR
FIX BIT REGISTERS
POR
NOTE
D7
D6
D5
D4
D3
D2
D1
D0
SGPIO
80H
Note 7.7
Note 7.8
SP
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
7h
DPLO
DPHO
DPL1
DPH1
DPS
Note 7.4
Note 7.4
Note 7.4
0
0
-
0
1
0
1
0
0
0
SEL
PCON
TCON
TMOD
TL0
SMOD0
TF1
GF1
IE1
GF0
IT1
C/T
STOP IDLE
30h
TR1
C/T
TF0
M1
TR0
M0
IE0
M1
IT0
M0
GATE
GATE
TL1
TH0
TH1
CKCON
-
-
T2M
IE3
T1M
IE2
T0M
1
MD2
0
MD1
0
MD0
1h
Note 7.4
Note 7.6
SPC_FNC
-
8Fh
90h
91h
92h
WRS
00h
00h
8h
Note 7.4
EXIF
IE5
IE4
0
Note 7.4
MPAGE
00h
Note 7.4
Note 7.5
SCON
98h
SM0_0 SM1_ SM2_0 REN_ TB8_0
RB8_0 TI_0
RI_0
Note 7.8
0
0
SBUF
IE
99h
A8h
B8h
EA
1
ES1
PS1
ET2
PT2
ES0
PS0
ET1
PT1
EX1
PX1
ET0
PT0
EX0
PX0
Note 7.8
Note 7.8
IP
Revision 1.1 (01-14-03)
SMSC LPC47N350
DATA4S8HEET
SMSC [ SMSC CORPORATION ]
