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89C58 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. 89C58
Description  80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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89C58 Datasheet(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
89C51/89C52/89C54/89C58
80C51 8-bit microcontroller family
4K/8K/16K/32K Flash
1999 Oct 27
6
Table 1.
89C51/89C52/89C54/89C58 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
AUXR#
Auxiliary
8EH
AO
xxxxxxx0B
AUXR1#
Auxiliary 1
A2H
GF2
0
DPS
xxxx00x0B
B*
B register
F0H
F7
F6
F5
F4
F3
F2
F1
F0
00H
DPTR:
Data Pointer (2 bytes)
DPH
Data Pointer High
83H
00H
DPL
Data Pointer Low
82H
00H
AF
AE
AD
AC
AB
AA
A9
A8
IE*
Interrupt Enable
A8H
EA
ET2
ES
ET1
EX1
ET0
EX0
0x000000B
BF
BE
BD
BC
BB
BA
B9
B8
IP*
Interrupt Priority
B8H
PT2
PS
PT1
PX1
PT0
PX0
xx000000B
B7
B6
B5
B4
B3
B2
B1
B0
IPH#
Interrupt Priority High
B7H
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
xx000000B
87
86
85
84
83
82
81
80
P0*
Port 0
80H
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
FFH
97
96
95
94
93
92
91
90
P1*
Port 1
90H
T2EX
T2
FFH
A7
A6
A5
A4
A3
A2
A1
A0
P2*
Port 2
A0H
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
FFH
B7
B6
B5
B4
B3
B2
B1
B0
P3*
Port 3
B0H
RD
WR
T1
T0
INT1
INT0
TxD
RxD
FFH
PCON#1
Power Control
87H
SMOD1
SMOD0
POF2
GF1
GF0
PD
IDL
00xxx000B
D7
D6
D5
D4
D3
D2
D1
D0
PSW*
Program Status Word
D0H
CY
AC
F0
RS1
RS0
OV
P
000000x0B
RACAP2H#
Timer 2 Capture High
CBH
00H
RACAP2L#
Timer 2 Capture Low
CAH
00H
SADDR#
Slave Address
A9H
00H
SADEN#
Slave Address Mask
B9H
00H
SBUF
Serial Data Buffer
99H
xxxxxxxxB
9F
9E
9D
9C
9B
9A
99
98
SCON*
Serial Control
98H
SM0/FE
SM1
SM2
REN
TB8
RB8
TI
RI
00H
SP
Stack Pointer
81H
07H
8F
8E
8D
8C
8B
8A
89
88
TCON*
Timer Control
88H
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00H
CF
CE
CD
CC
CB
CA
C9
C8
T2CON*
Timer 2 Control
C8H
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
00H
T2MOD#
Timer 2 Mode Control
C9H
T2OE
DCEN
xxxxxx00B
TH0
Timer High 0
8CH
00H
TH1
Timer High 1
8DH
00H
TH2#
Timer High 2
CDH
00H
TL0
Timer Low 0
8AH
00H
TL1
Timer Low 1
8BH
00H
TL2#
Timer Low 2
CCH
00H
TMOD
Timer Mode
89H
GATE
C/T
M1
M0
GATE
C/T
M1
M0
00H
*
SFRs are bit addressable.
#
SFRs are modified from or added to the 80C51 SFRs.
Reserved bits.
1. Reset value depends on reset source.
2. Bit will not be affected by reset.


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