83C754 Datasheet, PDF (9/26 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 4K/256 OTP/ROM, DAC, comparator, UART, reference

Philips Semiconductors
80C51 8-bit microcontroller family
4K/256 OTP/ROM, DAC, comparator, UART, reference
Preliminary specification
83C754/87C754
Table 2. 8XC754 Special Function Registers
SYMBOL DESCRIPTION
ACC*
Accumulator
DIRECT
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
ADDRESS _MSB
LSB
E0H
E7
E6
E5
E4
E3
E2
E1
E0
RESET
VALUE
00H
ACON0*
ACON1*
Analog Control 0
Analog Control 1
A0H
C0H
AC7 AC6 AC5 AC4 AC3 AC2
AC1
–
–
–
–
TSI MUX2 MUX1
AC0
MUX0
B*
B register
F0H
F7
F6
F5
F4
F3
F2
F1
F0
00H
CCAPH#
CCAPL#
PCA Module
Capture High
PCA Module
Capture Low
FEH
EEH
CCAPM# PCA Module Mode
DEH
–
ECOM CAPP CAPN MAT TOG
PWM
ECCF x0000000B
DF
DE
DD
DC
DB
DA
D9
D8
CCON*#
PCA Counter
Control
D8H
CF
CR
– CCF4 –
–
–
CH#
CL#
PCA Counter High
F9H
PCA Counter Low
E9H
–
00x00000B
00H
00H
CMOD# PCA Counter Mode D9H CODL WDTE –
–
–
CPS1 CPS0
ECF 00xxx000B
DCON
DAC Control
84H
DPTR:
Data pointer
(2 bytes)
DPL
Data pointer low
82H
DPH
Data pointer high
83H
AF
AE
AD
AC
AB
AA
A9
00H
00H
A8
IE*#
Interrupt Enable
A8H
EA
–
– ES/T1 EC
EX1
ET0
EX0 00H
AF
AE
AD
AC
AB
AA
A9
A8
IP*
Interrupt Priority
B8H
–
–
– PS/T1 PPC PX1
PT0
PX0 x0000000B
–
–
–
84
83
82
81
80
xxx11111B
P1*#
Port 1
90H
–
–
–
–
–
ZIN XYZRAMP XYSOURCE
P3*#
Port 3
B0H
INT1 ECI TxD RxD
–
–
–
–
PCON
Power control
87H SMOD1 SMOD0 –
POF GF1 GF0
PD
IDL
00xxxx00B
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
SP
Stack pointer
81H
xxxxxxxxB
07H
9F
9E
9D
9C
9B
9A
99
98
SCON* Serial Control
98H
SM0 SM1 SM2 REN TB8 RB8
TI
RI
00H
8F
8E
8D
8C
8B
8A
89
88
TCON* Timer Control
88H
TF1 TR1 TF0 TR0 IE1
IT1
IE0
IT0
00H
TH0
Timer High 0
8CH
00H
TH1
Timer High 1
8DH
00H
TL0
Timer Low 0
8AH
00H
TL1
Timer Low 1
8BH
00H
TMOD
Timer Mode
89H
GATE C/T
M1
M0 GATE C/T
M1
M0
00H
C7
C6
C5
C4
C3
C2
C1
C0
* SFRs are bit addressable.
# SFRs are modified from or added to the 80C51 SFRs.
1998 Apr 23
9