Intel 8253 - Pin Configurations

Philips Semiconductors Product specification
80C31/80C32
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
2000 Aug 07
5
LOGIC SYMBOL
PORT 0
PORT 1PORT 2
PORT 3
ADDRESS AND
DATA BUS
ADDRESS BUS
T2
T2EX
RxD
TxD
INT0
INT1
T0
T1
WR
RD
SECONDARY FUNCTIONS
RST
EA/V
PP
PSEN
ALE/PROG
V
SS
V
CC
XTAL1
XTAL2
SU00830
PIN CONFIGURATIONS
SU01063
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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
T2/P1.0
T2EX/P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
RST
RxD/P3.0
TxD/P3.1
INT0
/P3.2
INT1
/P3.3
T0/P3.4
T1/P3.5
P1.7
WR
/P3.6
RD
/P3.7
XTAL2
XTAL1
V
SS
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
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
DUAL
IN-LINE
PACKAGE
PLASTIC LEADED CHIP CARRIER PIN FUNCTIONS
SU01062
LCC
6140
7
17
39
29
18 28
Pin Function
1 NIC*
2 P1.0/T2
3 P1.1/T2EX
4 P1.2
5 P1.3
6 P1.4
7 P1.5
8 P1.6
9 P1.7
10 RST
11 P3.0/RxD
12 NIC*
13 P3.1/TxD
14 P3.2/INT0
15 P3.3/INT1
Pin Function
16 P3.4/T0
17 P3.5/T1
18 P3.6/WR
19 P3.7/RD
20 XTAL2
21 XTAL1
22 V
SS
23 NIC*
24 P2.0/A8
25 P2.1/A9
26 P2.2/A10
27 P2.3/A11
28 P2.4/A12
29 P2.5/A13
30 P2.6/A14
Pin Function
31 P2.7/A15
32 PSEN
33 ALE
34 NIC*
35 EA/V
PP
36 P0.7/AD7
37 P0.6/AD6
38 P0.5/AD5
39 P0.4/AD4
40 P0.3/AD3
41 P0.2/AD2
42 P0.1/AD1
43 P0.0/AD0
44 V
CC
* NO INTERNAL CONNECTION
PLASTIC QUAD FLAT PACK
PIN FUNCTIONS
SU01064
PQFP
44 34
1
11
33
23
12 22
Pin Function
1 P1.5
2 P1.6
3 P1.7
4 RST
5 P3.0/RxD
6 NIC*
7 P3.1/TxD
8 P3.2/INT0
9 P3.3/INT1
10 P3.4/T0
11 P3.5/T1
12 P3.6/WR
13 P3.7/RD
14 XTAL2
15 XTAL1
Pin Function
16 V
SS
17 NIC*
18 P2.0/A8
19 P2.1/A9
20 P2.2/A10
21 P2.3/A11
22 P2.4/A12
23 P2.5/A13
24 P2.6/A14
25 P2.7/A15
26 PSEN
27 ALE
28 NIC*
29 EA
/V
PP
30 P0.7/AD7
Pin Function
31 P0.6/AD6
32 P0.5/AD5
33 P0.4/AD4
34 P0.3/AD3
35 P0.2/AD2
36 P0.1/AD1
37 P0.0/AD0
38 V
CC
39 NIC*
40 P1.0/T2
41 P1.1/T2EX
42 P1.2
43 P1.3
44 P1.4
* NO INTERNAL CONNECTION