8XC54 Datasheet, PDF (11/56 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 8K-4K/256-1K OTP/ROM/ROMless, low voltage (2.7V-5.5V), low power, high speed (33 MHz)

Philips Semiconductors
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
Product specification
8XC54/58
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
Table 2. 8XC51FA/FB/FC, 8XC51RA+/RB+/RC+/RD+ Special Function Registers
SYMBOL
ACC*
AUXR#
AUXR1#
B*
CCAP0H#
CCAP1H#
CCAP2H#
CCAP3H#
CCAP4H#
CCAP0L#
CCAP1L#
CCAP2L#
CCAP3L#
CCAP4L#
DESCRIPTION
Accumulator
Auxiliary
Auxiliary 1
B register
Module 0 Capture High
Module 1 Capture High
Module 2 Capture High
Module 3 Capture High
Module 4 Capture High
Module 0 Capture Low
Module 1 Capture Low
Module 2 Capture Low
Module 3 Capture Low
Module 4 Capture Low
DIRECT
ADDRESS
E0H
8EH
A2H
F0H
FAH
FBH
FCH
FDH
FEH
EAH
EBH
ECH
EDH
EEH
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
LSB
E7
E6
E5
E4
E3
E2
E1
E0
–
–
–
–
–
–
EXTRAM
AO
(RX+ only)
–
–
–
LPEP³ GF3
0
–
DPS
F7
F6
F5
F4
F3
F2
F1
F0
RESET
VALUE
00H
xxxxxx00B
xxx0xxx0B
00H
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
CCAPM0#
CCAPM1#
CCAPM2#
CCAPM3#
CCAPM4#
Module 0 Mode
Module 1 Mode
Module 2 Mode
Module 3 Mode
Module 4 Mode
DAH
DBH
DCH
DDH
DEH
–
ECOM CAPP CAPN MAT TOG PWM ECCF x0000000B
–
ECOM CAPP CAPN MAT TOG PWM ECCF x0000000B
–
ECOM CAPP CAPN MAT TOG PWM ECCF x0000000B
–
ECOM CAPP CAPN MAT TOG PWM ECCF x0000000B
–
ECOM CAPP CAPN MAT TOG PWM ECCF x0000000B
CCON*#
CH#
CL#
CMOD#
PCA Counter Control
PCA Counter High
PCA Counter Low
PCA Counter Mode
D8H
F9H
E9H
D9H
DF
DE
DD
DC
DB
DA
D9
D8
CF
CR
–
CCF4 CCF3 CCF2 CCF1 CCF0 00x00000B
00H
00H
CIDL WDTE
–
–
–
CPS1 CPS0 ECF 00xxx000B
DPTR:
Data Pointer (2 bytes)
DPH
Data Pointer High
83H
DPL
Data Pointer Low
82H
IE*
Interrupt Enable
A8H
IP*
Interrupt Priority
B8H
IPH#
Interrupt Priority High
B7H
AF
AE
AD
AC
AB
AA
A9
00H
00H
A8
EA
EC
ET2
ES
ET1 EX1 ET0
EX0 00H
BF
BE
BD
BC
BB
BA
B9
B8
–
PPC PT2
PS
PT1 PX1 PT0
PX0 x0000000B
B7
B6
B5
B4
B3
B2
B1
B0
–
PPCH PT2H PSH PT1H PX1H PT0H PX0H x0000000B
P0*
Port 0
P1*
Port 1
P2*
Port 2
P3*
Port 3
87
86
85
84
83
82
81
80
80H
AD7
AD6
AD5 AD4
AD3 AD2 AD1
AD0 FFH
97
96
95
94
93
92
91
90
90H
CEX4 CEX3 CEX2 CEX1 CEX0 ECI T2EX
T2 FFH
A7
A6
A5
A4
A3
A2
A1
A0
A0H
AD15 AD14 AD13 AD12 AD11 AD10 AD9
AD8 FFH
B7
B6
B5
B4
B3
B2
B1
B0
B0H
RD
WR
T1
T0
INT1 INT0 TxD
RxD FFH
PCON#¹ Power Control
87H SMOD1 SMOD0
–
POF² GF1 GF0
PD
* 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.
3. LPEP – Low Power OTP–EPROM only operation.
IDL 00xx0000B
2000 Aug 07
11