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| 型號(hào)： | PCB80C51BH-4WP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CMOS single-chip 8-bit microcontrollers |
| 中文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQCC44 |
| 文件頁(yè)數(shù)： | 8/30頁(yè) |
| 文件大小： | 411K |
| 代理商： | PCB80C51BH-4WP |
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Philips Semiconductors
Product specification
80C31/80C51/87C51
CMOS single-chip 8-bit microcontrollers
1996 Aug 16
8
Table 1.
80C52/80C54/80C58 Special Function Registers
SYMBOL
DESCRIPTION
DIRECT
ADDRESS
E0H
8EH
A2H
F0H
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
E7
E6
E5
E4
–
–
–
–
–
–
–
–
F7
F6
F5
F4
LSB
RESET
VALUE
00H
xxxxxxx0B
xxxx00x0B
00H
ACC*
AUXR#
AUXR1#
B*
DPTR:
DPH
DPL
Accumulator
Auxiliary
Auxiliary 1 (Note 2)
B register
Data Pointer (2 bytes)
Data Pointer High
Data Pointer Low
E3
–
E2
–
0
F2
E1
–
–
F1
E0
AO
DPS
F0
WUPD
F3
83H
82H
00H
00H
AF
EA
BF
–
B7
–
87
AD7
97
–
A7
AD15
B7
RD
AE
EC
BE
–
B6
–
86
AD6
96
–
A6
AD14
B6
WR
AD
ET2
BD
PT2
B5
PT2H
85
AD5
95
–
A5
AD13
B5
T1
AC
ES
BC
PS
B4
PSH
84
AD4
94
–
A4
AD12
B4
T0
AB
ET1
BB
PT1
B3
PT1H
83
AD3
93
–
A3
AD11
B3
INT1
AA
EX1
BA
PX1
B2
PX1H
82
AD2
92
–
A2
AD10
B2
INT0
A9
ET0
B9
PT0
B1
PT0H
81
AD1
91
T2EX
A1
AD9
B1
TxD
A8
EX0
B8
PX0
B0
PX0H
80
AD0
90
T2
A0
AD8
B0
RxD
IE*
Interrupt Enable
A8H
00H
IP*
Interrupt Priority
B8H
x0000000B
IPH#
Interrupt Priority High
B7H
x0000000B
P0*
Port 0
80H
FFH
P1*
Port 1
90H
FFH
P2*
Port 2
A0H
FFH
P3*
Port 3
B0H
FFH
PCON#
1
Power Control
87H
SMOD1
D7
CY
SMOD0
D6
AC
–
–
GF1
D3
RS0
GF0
D2
OV
PD
D1
–
IDL
D0
P
00xx0000B
D5
F0
D4
RS1
PSW*
SADDR#
SADEN#
SBUF
Program Status Word
Slave Address
Slave Address Mask
Serial Data Buffer
D0H
A9H
B9H
99H
00H
00H
00H
xxxxxxxxB
9F
9E
SM1
9D
SM2
9C
REN
9B
TB8
9A
RB8
99
TI
98
RI
SCON*
SP
Serial Control
Stack Pointer
98H
81H
SM0/FE
00H
07H
8F
TF1
CF
–
8E
TR1
CE
–
8D
TF0
CD
–
8C
TR0
CC
–
8B
IE1
CB
–
8A
IT1
CA
–
89
IE0
C9
T2OE
88
IT0
C8
DCEN
TCON*
Timer Control
88H
00H
T2MOD#
TH0
TH1
TL0
TL1
TMOD
SFRs are bit addressable.
SFRs are modified from or added to the 80C51 SFRs.
Reserved bits.
1. Reset value depends on reset source.
2. Available only on SC80C51.
Timer 2 Mode Control
Timer High 0
Timer High 1
Timer Low 0
Timer Low 1
Timer Mode
C9H
8CH
8DH
8AH
8BH
89H
xxxxxx00B
00H
00H
00H
00H
00H
GATE
C/T
M1
M0
GATE
C/T
M1
M0
*
#
–
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