Philips Semiconductors
Product specification
80C51 8-bit microcontroller family
4K/8K/16K/32K Flash
89C51/89C52/89C54/89C58
LOGIC SYMBOL
V
CC
XTAL1
PORT 0
ADDRESS AND
DATA BUS
V
SS
Ceramic and Plastic Leaded Chip Carrier
Pin Functions
6
1
40
7
39
LCC
XTAL2
T2
T2EX
RST
EA/V
PP
PSEN
SECONDARY FUNCTIONS
ALE/PROG
RxD
TxD
INT0
INT1
T0
T1
WR
RD
PORT 1
17
29
18
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
NIC*
P1.0/T2
P1.1/T2EX
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
P3.0/RxD
NIC*
P3.1/TxD
P3.2/INT0
P3.3/INT1
Pin
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Function
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
XTAL1
V
SS
NIC*
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
28
Pin
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Function
P2.7/A15
PSEN
ALE
NIC*
EA/V
PP
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
CC
PORT 3
PORT 2
ADDRESS BUS
SU00830
PIN CONFIGURATIONS
Dual In-Line Package Pin Functions
T2/P1.0 1
T2EX/P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RST 9
RxD/P3.0 10
TxD/P3.1 11
INT0/P3.2 12
INT1/P3.3 13
T0/P3.4 14
T1/P3.5 15
WR/P3.6 16
RD/P3.7 17
XTAL2 18
XTAL1 19
V
SS
20
DUAL
IN-LINE
PACKAGE
40 V
CC
39 P0.0/AD0
38 P0.1/AD1
37 P0.2/AD2
36 P0.3/AD3
35 P0.4/AD4
34 P0.5/AD5
33 P0.6/AD6
* NO INTERNAL CONNECTION
SU01062
Plastic Quad Flat Pack Pin Functions
44
34
1
33
PQFP
11
32 P0.7/AD7
31 EA/V
PP
30 ALE
29 PSEN
28 P2.7/A15
27 P2.6/A14
26 P2.5/A13
25 P2.4/A12
24 P2.3/A11
23 P2.2/A10
22 P2.1/A9
21 P2.0/A8
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
P1.5
P1.6
P1.7
RST
P3.0/RxD
NIC*
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
XTAL1
12
Pin
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Function
V
SS
NIC*
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
ALE
NIC*
EA/V
PP
P0.7/AD7
22
23
Pin
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Function
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
CC
NIC*
P1.0/T2
P1.1/T2EX
P1.2
P1.3
P1.4
SU01063
* NO INTERNAL CONNECTION
SU01064
1999 Oct 27
4
PHILIPS [ NXP SEMICONDUCTORS ]
