80C453 Datasheet, PDF (5/23 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontrollers

Philips Semiconductors
CMOS single-chip 8-bit microcontrollers
Preliminary specification
80C453/83C453/87C453
Table 1.
SYMBOL
ACC*
B*
CSR*#
DPTR
DPH
DPL
IP*
87C453 Special Function Registers
DESCRIPTION
DIRECT
ADDRESS MSB
Accumulator
E0H
E7
B register
F0H
F7
EF
Port 6 command/status
E8H
MB1
Data pointer (2 bytes)
Data pointer high
83H
Data pointer low
82H
BF
Interrupt priority
B8H
–
BIT NAMES AND ADDRESSES
E6
F6
EE
MB0
E5
F5
ED
MA1
E4
F4
EC
MA0
E3
F3
EB
OBFC
E2
F2
EA
IDSM
BE
BD
BC
BB
BA
POB
PIB
PS
PT1 PX1
LSB
E1
E0
F1
F0
E9
E8
OBF IBF
B9
B8
PT0 PX0
RESET
VALUE
00H
00H
FCH
00H
00H
x0000000B
AUXR# Auxiliary register
IE*
P0*
P1*
P2*
P3*
P4*#
P5*#
P6*#
PCON
Interrupt enable
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Power control
8EH
A8H
80H
90H
A0H
B0H
C0H
C8H
D8H
87H
–
–
–
–
–
–
AF
AO x0000000B
AF
AE
AD
AC
AB
AA
A9
A8
EA
IOB
IIB
ES ET1 EX1 ET0 EX0 00000000B
87
B6
85
84
83
82
81
80 FFH
97
96
95
94
93
92
91
90 FFH
A7
A6
A5
A4
A3
A2
A1
A0 FFH
B7
B6
B5
B4
B3
B2
B1
B0 FFH
C7
C6
C5
C4
C3
C2
C1
C0 FFH
CF
CE
CD
CC
CB
CA
C9
C8 FFH
DF
DE
DD
DC
DB
DA
D9
D8 FFH
SMOD1 SMOD0 –
POF¹ GF1 GF0 PD
IDL 00xx0000B
PSW*
SADDR#
SADEN#
SBUF
Program status word
Slave Address
Slave Address Mask
Serial data buffer
SCON*
SP
Serial port control
Stack pointer
TCON* Timer/counter control
D0H
A9H
B9H
99H
98H
81H
88H
D7
CY
9F
SM0
8F
TF1
D6
D5
D4
D3
D2
D1
AC
F0 RS1 RS0 OV
–
9E
9D
9C
9B
9A
99
SM1 SM2 REN TB8 RB8
TI
8E
8D
8C
8B
8A
89
TR1
TF0 TR0 IE1
IT1
IE0
D0
P 00H
00H
00H
xxxxxxxxB
98
RI 00H
07H
88
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
NOTES:
* SFRs are bit addressable.
# SFRs are modified from or added to the 80C51 SFRs.
1. REset value depends on reset source.
1996 Aug 15
3-315