p89c668hbbd NXP Semiconductors, p89c668hbbd Datasheet - Page 9

• Manufacturer Part Number: p89c668hbbd
• Description: 80c51 8-bit Flash Microcontroller Family
• Manufacturer: NXP Semiconductors

*
# SFRs are modified from or added to the 80C51 SFRs.
– Reserved bits.
1. Reset value depends on reset source.
Philips Semiconductors
Table 1. Special Function Registers
2002 Oct 28
ACC*
AUXR#
AUXR1#
B*
CCAP0H#
CCAP1H#
CCAP2H#
CCAP3H#
CCAP4H#
CCAP0L#
CCAP1L#
CCAP2L#
CCAP3L#
CCAP4L#
CCAPM0#
CCAPM1#
CCAPM2#
CCAPM3#
CCAPM4#
CCON*#
CH#
CL#
CMOD#
DPTR:
IEN0*
IEN1*
IP*
IPH#
P0*
P1*
P2*
P3*
PCON#
SYMBOL
DPL
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
DPH
SFRs are bit addressable.
1
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
Module 0 Mode
Module 1 Mode
Module 2 Mode
Module 3 Mode
Module 4 Mode
PCA Counter Control
PCA Counter High
PCA Counter Low
PCA Counter Mode
Data Pointer (2 bytes)
Data Pointer High
Data Pointer Low
Interrupt Enable 0
Interrupt Enable 1
Interrupt Priority
Interrupt Priority High
Port 0
Port 1
Port 2
Port 3
Power Control
DESCRIPTION
ADDRESS
DIRECT
ECH
EDH
E0H
8EH
A2H
FAH
FBH
FCH
FDH
FEH
EAH
EBH
EEH
C2H
C3H
C4H
C5H
C6H
C0H
E9H
C1H
A8H
B8H
B7H
A0H
B0H
F0H
F9H
83H
82H
80H
90H
87H
E8
MSB
SMOD1
PT2H
AD15
CIDL
SDA
PT2
AD7
RD
E7
C7
CF
AF
EA
BF
A7
B7
F7
87
97
–
–
–
–
–
–
–
–
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
ECOM
ECOM
ECOM
ECOM
ECOM
WDTE
SMOD0
PPCH
AD14
PPC
AD6
SCL
WR
CR
C6
AE
EC
BE
E6
F6
86
96
A6
B6
–
–
–
9
ENBOOT
CAPP
CAPP
CAPP
CAPP
CAPP
PS1H
CEX2
AD13
CEX4
ES1
PS1
AD5
AD
BD
T1/
E5
C5
A5
B5
F5
85
95
–
–
–
–
–
CAPN
CAPN
CAPN
CAPN
CAPN
CCF4
PS0H
CEX1
CEX3
AD12
POF
ES0
PS0
AD4
AC
BC
T0/
E4
F4
C4
A4
B4
84
94
–
–
–
–
P89C660/P89C662/P89C664/
CCF3
PT1H
CEX0
AD11
INT1
GF2
MAT
MAT
MAT
MAT
MAT
AD3
GF1
ET1
PT1
C3
AB
BB
E3
F3
83
93
A3
B3
–
–
–
CCF2
CPS1
PX1H
AD10
INT0
TOG
TOG
TOG
TOG
TOG
EX1
PX1
AD2
GF0
ECI
E2
C2
AA
BA
A2
B2
F2
82
92
–
0
–
EXTRAM
CCF1
CPS0
PT0H
T2EX
PWM
PWM
PWM
PWM
PWM
ET0
PT0
AD1
AD9
TxD
PD
E1
C1
A9
B9
A1
B1
F1
81
91
–
–
ECCF
ECCF
ECCF
ECCF
ECCF
CCF0
PX0H
DPS
ECF
EX0
ET2
PX0
AD0
AD8
RxD
IDL
P89C668
AO
E0
F0
C0
A8
B8
T2
A0
B0
LSB
80
90
Product data
00H
xxxxxx10B
xxxxx0x0B
00H
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
xxxxxxxxB
x0000000B
x0000000B
x0000000B
x0000000B
x0000000B
00x00000B
00H
00H
00xxx000B
00H
00H
00H
xxxxxxx0B
x0000000B
x0000000B
FFH
FFH
FFH
FFH
00xxx000B
RESET
VALUE