P87C660X2 PHILIPS [NXP Semiconductors], P87C660X2 Datasheet - Page 10

• Manufacturer Part Number: P87C660X2
• Description: 80C51 8-bit microcontroller family
• Manufacturer: PHILIPS [NXP Semiconductors]

*
# SFRs are modified from or added to the 80C51 SFRs.
– Reserved bits.
1. Reset value depends on reset source.
2. 8xC661X2 only.
Philips Semiconductors
SPECIAL FUNCTION REGISTERS (Continued)
2003 Oct 02
SYMBOL
P3*
PCON#
PSW
RCAP2H#
RCAP2L#
SADDR#
SADEN#
SBUF
SCON*
SP
TCON*
T2CON*
T2MOD#
TH0
TH1
TH2#
TL0
TL1
TL2#
TMOD
S1CON
S1STA
S1DAT
S1ADR
S2CON
S2STA
S2DAT
S2ADR
S2IST
IP1
IP1H
WDTRST
80C51 8-bit microcontroller family
RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33
MHz), two 400KB I
SFRs are bit addressable.
2
2
2
2
2
2
1
2
Port 3
Power Control
Program Status Word
Timer 2 Capture High
Timer 2 Capture Low
Slave Address
Slave Address Mask
Serial Data Buffer
Serial Control
Stack Pointer
Timer Control
Timer 2 Control
Timer 2 Mode Control
Timer High 0
Timer High 1
Timer High 2
Timer Low 0
Timer Low 1
Timer Low 2
Timer Mode
I2C Control
I2C STATUS
I2C DATA
I2C ADDRESS
Second I
Second I
Second I
Second I
Second I
Interrupt priority 1
Watchdog Timer Reset
DESCRIPTION
2
2
2
2
2
C control
C
C
C
C
2
C interfaces
ADDRESS
DIRECT
CDH
CCH
D0H
CBH
CAH
C8H
C9H
8CH
8DH
D8H
D9H
DAH
DBH
B0H
87H
A9H
B9H
99H
98H
81H
88H
8AH
8BH
89H
F8H
F1H
F2H
F3H
F4H
E7H
F7H
A6H
16 KB OTP/ROM, 512B
MSB
SM0/FE
SMOD1
GATE
CR2
CR2
SC4
SC4
TF1
TF2
RD
CY
CF
D7
9F
8F
–
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
SMOD0
EXF2
ENA1
SM1
ENA1
TR1
SC3
SC3
WR
C/T
AC
CE
D6
9E
8E
–
10
CEX4
RCLK
SM2
SC2
SC2
TF0
STA
STA
T1/
CD
D5
9D
8D
M1
F0
–
–
CEX3
TCLK
POF
REN
STO
STO
RS1
TR0
SC1
SC1
T0/
CC
M0
D4
9C
8C
–
EXEN2
GATE
INT1
GF1
RS0
SC0
SC0
TB8
IE1
CB
D3
9B
8B
SI
SI
–
INT0
GF0
RB8
TR2
C/T
OV
IT1
CA
D2
9A
8A
AA
AA
–
0
0
P8xC660X2/661X2
T2OE
C/T2
CR1
CR1
TxD
IE0
PD
D1
C9
M1
F1
99
89
TI
0
0
CP/RL2
DCEN
PS2H
RxD
CR0
CR0
PS2
IDL
IT0
GC
GC
LSB
D0
C8
M0
98
88
RI
P
0
0
FFH
00xx0000B
000000x0B
00H
00H
00H
00H
xxxxxxxxB
00H
07H
00H
00H
xxxxxx00B
00H
00H
00H
00H
00H
00H
00H
00H
F8H
00H
00H
00H
F8H
00H
00H
00H
00H
Product data
RESET
VALUE