参数资料
型号: 89C52
厂商: Integrated Silicon Solution, Inc.
英文描述: CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
中文描述: CMOS单芯片的8位单片机,带有8的快闪记忆体
文件页数: 10/50页
文件大小: 425K
代理商: 89C52
IS89C52
10
Integrated Silicon Solution, Inc. — 1-800-379-4774
MC013-1C
11/21/98
ISSI
Table 2. Special Function Registers
Symbol
Description
Direct Address
Bit Address, Symbol, or Alternative Port Function
Reset Value
ACC
(1)
B
(1)
DPH
DPL
Accumulator
B register
E0H
F0H
83H
82H
E7
F7
E6
F6
E5
F5
E4
F4
E3
F3
E2
F2
E1
F1
E0
F0
00H
00H
00H
00H
Data pointer (DPTR) high
Data pointer (DPTR) low
AF
EA
BF
87
P0.7
AD7
97
P1.7
A7
P2.7
AD15 AD14
B7
P3.7
RD
AE
BE
86
P0.6
AD6
96
P1.6
A6
P2.6
AD
BD
85
P0.5
AD5
95
P1.5
A5
P2.5
AD13 AD12 AD11 AD10 AD9
B5
B4
B3
P3.5
P3.4
P3.3
T1
T0
INT1
GF1
D5
D4
D3
F0
RS1
RS0
AC
ES
BC
PS
84
P0.4
AD4
94
P1.4
A4
P2.4
AB
ET1
BB
PT1
83
P0.3
AD3
93
P1.3
A3
P2.3
AA
EX1
BA
PX1
82
P0.2 P0.1 P0.0
AD2
AD1
92
91
P1.2 P1.1 P1.0
A2
A1
P2.2 P2.1 P2.0
A9
ET0
B9
PT0
81
A8
EX0
B8
PX0
80
IE
(1)
Interrupt enable
A8H
0XX00000B
IP
(1)
Interrupt priority
B8H
XXX00000B
P0
(1)
Port 0
80H
FFH
AD0
90
P1
(1)
Port 1
90H
FFH
A0
P2
(1)
Port 2
A0H
FFH
AD8
B0
B6
P3.6
WR
B2
P3.2 P3.1 P3.0
INT0
TXD RXD
GF0
PD
D2
D1
OV
B1
P3
(1)
Port 3
B0H
FFH
PCON
Power control
87H
SMOD
D7
CY
D6
AC
IDL
D0
P
0XXX0000B
PSW
(1)
SBUF
Program status word
Serial data buffer
D0H
99H
00H
XXXXXXXXB
9F
SM0
9E
SM1
9D
SM2
9C
REN
9B
TB8
9A
RB8
99
TI
98
RI
SCON
(1)
SP
Serial controller
Stack pointer
98H
81H
00H
07H
8F
TF1
GATE
8E
TR1
C/
T
8D
TF0
M1
8C
TR0
M0
8B
IE1
GATE
8A
IT1
C/
T
89
IE0
M1
88
IT0
M0
TCON
(1)
TMOD
TH0
TH1
TL0
TL1
RCAP2H
(2)
RCAP2L
(2)
TL2
(2)
Notes:
1. Denotes bit addressable.
2. SFRs are added to the 80C51 SFRs.
Timer control
Timer mode
Timer high 0
Timer high 1
Timer low 0
Timer low 1
Capture high
Capture low
Timer low 2
88H
89H
8CH
8DH
8AH
8BH
CAH
CBH
CCH
00H
00H
00H
00H
00H
00H
00H
00H
00H
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