
Philips Semiconductors
Product specification
80C575/83C575/
87C575
80C51 8-bit microcontroller family
8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer
1998 May 01
7
Table 1.
87C575 Special Function Registers
SYMBOL
DESCRIPTION
DIRECT
ADDRESS
E0H
8EH
F0H
FAH
FBH
FCH
FDH
FEH
EAH
EBH
ECH
EDH
EEH
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
E7
E6
E5
E4
–
–
–
–
F7
F6
F5
F4
LSB
RESET
VALUE
00H
xxxxxx00B
00H
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
ACC*
AUXR#
B*
CCAP0H#
CCAP1H#
CCAP2H#
CCAP3H#
CCAP4H#
CCAP0L#
CCAP1L#
CCAP2L#
CCAP3L#
CCAP4L#
Accumulator
Auxiliary
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
E3
–
F3
E2
–
F2
E1
LO
F1
E0
AO
F0
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
ECOM
ECOM
ECOM
ECOM
CAPP
CAPP
CAPP
CAPP
CAPP
CAPN
CAPN
CAPN
CAPN
CAPN
MAT
MAT
MAT
MAT
MAT
TOG
TOG
TOG
TOG
TOG
PWM
PWM
PWM
PWM
PWM
ECCF
ECCF
ECCF
ECCF
ECCF
x0000000B
x0000000B
x0000000B
x0000000B
x0000000B
DF
CF
DE
CR
DD
–
DC
CCF4
DB
CCF3
DA
CCF2
D9
D8
CCON*#
CH#
CL#
CMOD#
PCA Counter Control
PCA Counter High
PCA Counter Low
PCA Counter Mode
D8H
F9H
E9H
D9H
CCF1
CCF0
00x00000B
00H
00H
00xxx000B
CIDL
WDTE
–
–
–
CPS1
CPS0
ECF
EF
EE
ED
EC
EB
EA
E9
E8
CMP*#
CMPE#
Comparator
Comparator Enable
E8H
91H
EC3DP
EC3TDC
EC2DP
EC2TDC
EC1DP
EC1TDC
EC0DP
EC0TDC
C3RO
EC3OD
C2RO
EC2OD
C1RO
EC1OD
C0RO
EC0OD
00H
00H
DPTR:
DPH
DPL
Data Pointer (2 bytes)
Data Pointer High
Data Pointer Low
83H
82H
00H
00H
AF
EA
BF
–
AE
EC
BE
PPC
AD
ET2
BD
PT2
AC
ES
BC
PS
AB
ET1
BB
PT1
AA
EX1
BA
PX1
A9
ET0
B9
PT0
A8
EX0
B8
PX0
IE*
Interrupt Enable
A8H
00H
IP*
Interrupt Priority
B8H
x0000000B
87
AD7
86
AD6
85
AD5
84
AD4
83
AD3
82
AD2
81
AD1
80
AD0
P0*
Port 0
80H
00H
97
96
95
94
93
92
91
90
P1*
Port 1
90H
CEX4
CEX3
CEX2
CEX1
CEX0
EXI
T2EX
T2
00H
A7
A6
A5
A4
A3
A2
A1
A0
P2*
Port 2
A0H
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
00H
B7
B6
B5
B4
B3
B2
B1
B0
P3*
*
#
1. 87C575 only.
Port 3
B0H
RD
WR
T1
T0
INT1
INT0
TxD
RxD
00H
SFRs are bit addressable.
SFRs are modified from or added to the 80C51 SFRs.