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| 型號(hào)： | P83C851FBP |
| 廠(chǎng)商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 16-Bit Buffers/Drivers with 3-State Outputs 48-TSSOP -40 to 85 |
| 中文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件頁(yè)數(shù)： | 6/22頁(yè) |
| 文件大小： | 182K |
| 代理商： | P83C851FBP |
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Philips Semiconductors
Product specification
80C851/83C851
CMOS single-chip 8-bit microcontroller
with on-chip EEPROM
1998 Jul 03
6
Table 1.
8XC851 Special Function Registers
SYMBOL
DESCRIPTION
DIRECT
ADDRESS
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
LSB
RESET
VALUE
ACC*
Accumulator
E0H
E7
E6
E5
E4
E3
E2
E1
E0
00H
B*
B register
F0H
F7
F6
F5
F4
F3
F2
F1
F0
00H
EF
EE
ED
EC
EB
EA
E9
E8
DPTR:
DPH
DPL
Data pointer
(2 bytes):
High byte
Low byte
83H
82H
00H
00H
EADRH#
EEPROM addr
reg-high
F3H
80H
EADRL#
EEPROM addr
reg-low
F2H
00H
ECNTRL#
EEPROM control reg
F6H
IFE
EEINT
EWP
–
ECNTR
L3
ECNTR
L2
ECNTR
L1
ECNTR
L0
00H
EDAT#
EEPROM data
register
F4H
xxH
ETIM#
EEPROM timer
register
F5H
08H
BF
BE
BD
BC
BB
BA
B9
B8
IP*
Interrupt priority
B8H
–
–
–
PS
PT1
PX1
PT0
PX0
xxx00000B
AF
AE
AD
AC
AB
AA
A9
A8
IE*
Interrupt enable
A8H
EA
–
–
ES
ET1
EX1
ET0
EX0
0xx00000B
P0*
Port 0
80H
87
86
85
84
83
82
81
80
FFH
P1*
Port 1
90H
97
96
95
94
93
92
91
90
FFH
P2*
Port 2
A0H
A7
A6
A5
A4
A3
A2
A1
A0
FFH
P3*
Port 3
B0H
B7
B6
B5
B4
B3
B2
B1
B0
FFH
PCON
Power control
87H
SMOD
–
–
–
GF1
GF0
PD
IDL
0xxx0000B
D7
D6
D5
D4
D3
D2
D1
D0
PSW*
Program status word
D0H
CY
AC
F0
RS1
RS0
OV
–
P
00H
SBUF
Serial data buffer
99H
xxxxxxxxB
9F
9E
9D
9C
9B
9A
99
98
SCON*
Serial port control
98H
SM0
SM1
SM2
REN
TB8
RB8
TI
RI
00H
SP
Stack pointer
81H
07H
8F
8E
8D
8C
8B
8A
89
88
00H
TCON*
Timer/counter con-
trol
88H
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00H
TMOD
Timer/counter mode
89H
GATE
C/T
M1
M0
GATE
C/T
M1
M0
00H
TH0
Timer 0 high byte
8CH
00H
TH1
Timer 1 high byte
8DH
00H
TL0
Timer 0 low byte
8AH
00H
TL1
Timer 1 low byte
8BH
00H
*
#
SFRs are bit addressable.
SFRs are modified from or added to the 80C51 SFRs.
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