MG87FE/L2051/4051/6051
Preliminary, v 1.03
MAKE YOU WIN
7.2.SFR Bit Assignment
SYMBOL DESCRIPTION ADDRESS
BIT ADDRESS AND SYMBOL
INITIAL
LSB VALUE
00000111B
SP
DPL
DPH
PCON
TCON
Stack Pointer
81H
82H
83H
87H
88H
Data Pointer Low
Data Pointer High
Power Control
Timer Control
00000000B
00000000B
SMOD SMOD0 PWMEN
POF
9CH
TR0
M0
GF1
9BH
IE1
GF0
9AH
IT1
PD
89H
IE0
M1
IDL
88H
IT0
00010000B
00000000B
9FH
TF1
9EH
TR1
C/T
9DH
TF0
M1
GATE
GATE
C/T
M0
TMOD
TL0
TL1
TH0
TH1
AUXR
CKCON3
P1
ACSR
SCON
Timer Mode
Timer Low 0
Timer Low 1
Timer High 0
Timer High 1
Auxiliary
Clock Control 3
Port 1
Analog Comp. Reg.
Serial Control
89H
8AH
8BH
8CH
8DH
8EH
8FH
90H
97H
98H
00000000B
00000000B
00000000B
00000000B
00000000B
00000000B
xxxxxx0xB
11111111B
0xx00000B
00000000B
INT3H INT2H P15FS P14FS P13FS P12FS P11PU P10PU
-
-
-
-
-
-
PWDEX EN6TR
91H 90H
97H
96H
-
95H
-
94H
93H
92H
ACIDX
ACF ACEN ACM2 ACM1 ACM0
9FH
SM0
/FE
9EH
SM1
9DH
SM2
9CH
REN
9BH
TB8
9AH
RB8
99H
TI
98H
RI
SBUF
AUXR1
IE
Serial Buffer
Auxiliary 1
Interrupt Enable
99H
A2H
A8H
xxxxxxxxB
0xxx0xxxB
0xx00000B
P14FD
AFH
EA
-
-
-
GF2
ABH
ET1
-
-
-
AEH
EAC
ADH
ACH
ES
AAH
EX1
A9H
ET0
A8H
EX0
SADDR
P3
Slave Address
Port 3
A9H
B0H
00000000B
1x111111B
B7H
B6H
B5H
T1
B4H
T0
B3H
INT1
B2H
INT0
B1H
TXD
B0H
RXD
PX3H/ PX2H/
PTCH PACH
PSH
PT1H PX1H PT0H
PX0H
IPH
IPL
Interrupt Priority
High
Interrupt Priority Low
B7H
B8H
00x00000B
xxx00000B
BFH
BEH
PAC
BDH
BCH
PS
BBH
PT1
BAH
PX1
B9H
PT0
B8H
PX0
SADEN
CKCON2
XICON
Slave Address Mask
Clock Control 2
Ext. Interrupt Control
B9H
BFH
C0H
00000000B
xx001010B
00000000B
OSCDR EN6TR XCKS5 XCKS4 XCKS3 XCKS2 XCKS1 XCKS0
C7H
PX3/
PTC
-
C6H
EX3
C5H
IE3
C4H
IT3
C3H
PX2
C2H
EX2
C1H
IE2
C0H
IT2
-
-
-
-
SCKS2 SCKS1 SCKS0
CKCON
PSW
Clock Control
Program Status
Word
C7H
D0H
xxxxx000B
00000000B
D7H
D6H
D5H
D4H
D3H
D2H
D1H
D0H
CY
AC
F0
RS1
RS0
OV
-
P
P37WE
P35WE P34WE P33WE P32WE P31WE P30WE
P3WKPE
P1WKPE
CCON
P3 Wake-up Enable
P1 Wake-up Enable
Counter Control
Reg.
D6H
D7H
D8H
0x000000B
00000000B
00xxxxxxB
P17WE P16WE P15WE P14WE P13WE P12WE P11WE P10WE
CF
CR
-
-
-
-
-
-
CIDL POS2 POS1 POS0 CPS2 CPS1 CPS0
ECF
PS0
CMOD
WDTCR
Counter Mode Reg.
Watch-dog-timer
Control register
ISP Flash data
ISP Flash address
High
ISP Flash Address
Low
ISP Mode Table
IAP Low Boundary
D9H
E1H
00000000B
0x000000B
WRF
ENW
CLW
WIDL
PS2
MS2
PS1
MS1
-
IFD
IFADRH
E2H
E3H
11111111B
00000000B
IFADRL
E4H
00000000B
-
-
-
-
MS3
MS0
IFMT
IAPLB
E5H
Note 1
xxxx0000B
11111111B
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© Megawin Technology Co., Ltd. 2009 All rights reserved.
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