Philips Semiconductors
Product specification
CMOS single-chip 8-bit microcontrollers
80C31/80C51/87C51
CERAMIC AND PLASTIC LEADED CHIP CARRIER
PIN FUNCTIONS
PLASTIC QUAD FLAT PACK
PIN FUNCTIONS
44
34
6
1
40
7
39
1
33
23
LCC
PQFP
11
17
29
18
28
12
22
Pin
1
Function
NC*
Pin
Function
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
Pin
Function
P2.7/A15
PSEN
Pin
1
Function
P1.5
Pin
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Function
Pin
Function
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
V
31
32
33
34
35
36
37
38
39
40
41
42
43
44
SS
2
P1.0
2
P1.6
NC*
3
P1.1
ALE/PROG
NC*
3
P1.7
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
PSEN
4
P1.2
4
RST
5
P1.3
EA/V
PP
5
P3.0/RxD
NC*
6
P1.4
XTAL1
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
6
7
P1.5
V
7
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
XTAL1
SS
8
P1.6
NC*
8
V
CC
9
P1.7
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
9
NC*
P1.0
P1.1
P1.2
P.13
P1.4
10
11
12
13
14
15
RST
10
11
12
13
14
15
P3.0/RxD
NC*
ALE/PROG
NC*
P3.1/TxD
P3.2/INT0
P3.3/INT1
V
EA/V
PP
CC
P0.7/AD7
* DO NOT CONNECT
* DO NOT CONNECT
SU00003
SU00002
LOGIC SYMBOL
V
V
SS
CC
XTAL1
ADDRESS AND
DATA BUS
XTAL2
RST
EA/V
PP
PSEN
ALE/PROG
RxD
TxD
INT0
INT1
T0
ADDRESS BUS
T1
WR
RD
SU00004
3
1996 Aug 16
NXP [ NXP ]
