p87c453ebaa NXP Semiconductors, p87c453ebaa Datasheet - Page 6

• Manufacturer Part Number: p87c453ebaa
• Description: 80c51 8-bit Microcontroller Family 8k/256 Otp/rom, Expanded I/o
• Manufacturer: NXP Semiconductors

*
# SFRs are modified from or added to the 80C51 SFRs.
1. REset value depends on reset source.
Philips Semiconductors
Table 1.
NOTES:
1998 Apr 23
SYMBOL
SADDR#
SADEN#
ACC*
B*
CSR*#
DPTR
IP*
AUXR#
IE*
P0*
P1*
P2*
P3*
P4*#
P5*#
P6*#
PCON
PSW*
SBUF
SCON*
SP
TCON*
TMOD
TH0
TH1
TL0
TL1
80C51 8-bit microcontroller family
8K/256 OTP/ROM, expanded I/O
DPH
DPL
SFRs are bit addressable.
Accumulator
B register
Port 6 command/status
Data pointer (2 bytes)
Data pointer high
Data pointer low
Interrupt priority
Auxiliary register
Interrupt enable
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Power control
Program status word
Slave Address
Slave Address Mask
Serial data buffer
Serial port control
Stack pointer
Timer/counter control
Timer/counter mode
Timer 0 high byte
Timer 1 high byte
Timer 0 low byte
Timer 1 low byte
87C453 Special Function Registers
DESCRIPTION
ADDRESS
DIRECT
C0H
C8H
D8H
D0H
8CH
8DH
E0H
F0H
E8H
83H
82H
B8H
8EH
A8H
80H
90H
A0H
B0H
87H
A9H
B9H
99H
98H
81H
88H
89H
8AH
8BH
MSB
SMOD1
GATE
MB1
SM0
TF1
EA
CF
DF
CY
E7
F7
EF
BF
AF
A7
B7
C7
D7
9F
8F
87
97
–
–
SMOD0
MB0
POB
SM1
TR1
IOB
C/T
CE
DE
AC
EE
BE
AE
C6
D6
E6
F6
B6
96
A6
B6
9E
8E
–
BIT NAMES AND ADDRESSES
6
MA1
SM2
TF0
PIB
ED
BD
AD
CD
DD
M1
E5
IIB
A5
B5
C5
D5
9D
8D
F5
85
95
F0
–
–
POF
MA0
REN
RS1
TR0
CC
DC
EC
BC
PS
AC
ES
C4
D4
9C
8C
M0
E4
F4
84
94
A4
B4
–
1
OBFC
GATE
GF1
RS0
PT1
ET1
TB8
IE1
EB
BB
AB
C3
CB
DB
D3
E3
F3
A3
B3
9B
8B
83
93
–
IDSM
PX1
EX1
GF0
RB8
C/T
EA
BA
AA
CA
DA
OV
IT1
E2
A2
B2
C2
D2
9A
8A
F2
82
92
–
83C453/87C453
OBF
PT0
ET0
PD
IE0
M1
E1
E9
B9
AF
A9
A1
B1
C1
C9
D9
D1
F1
81
91
99
89
TI
–
LSB
Preliminary specification
PX0
EX0
IBF
AO
IDL
IT0
M0
E0
F0
E8
B8
A8
A0
B0
C0
C8
D8
D0
80
90
98
RI
88
P
00H
00H
00H
00H
FCH
00H
00H
x0000000B
x0000000B
00000000B
FFH
FFH
FFH
FFH
FFH
FFH
FFH
00xx0000B
00H
xxxxxxxxB
00H
07H
00H
00H
00H
00H
00H
00H
RESET
VALUE