MOSEL VITELIC
Pin Descriptions
MSU2051/U2031
40 PDIP Dice
Pin#
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
Pad#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20-22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42,43
44 LQFP 44 PQFP 44 PLCC Symbol
Pin#
40
41
42
43
44
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
29
30
31
32
33
34
35
36
37
38
Pin#
40
41
42
43
44
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
29
30
31
32
33
34
35
36
37
38
Pin#
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
35
36
37
38
39
40
41
42
43
44
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RES
RXD/P3.0
TXD/P3.1
#INT0/P3.2
#INT1/P3.3
T0/P3.4
T1/P3.5
#WR/P3.6
#RD/P3.7
XTAL2
XTAL1
VSS
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
#PSEN
ALE
#EA
AD7/P0.7
AD6/P0.6
AD5/P0.5
AD4/P0.4
AD3/P0.3
AD2/P0.2
AD1/P0.1
AD0/P0.0
VDD
Active I/O
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i
i/o
i/o
L/-
L/-
i/o
i/o
i/o
L/-
L/-
i/o
i/o
i/o
o
i
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
L
H
L
o
o
i
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
Names
bit 0 of Port 1
bit 1 of Port 1
bit 2 of Port 1
bit 3 of Port 1
bit 4 of Port 1
bit 5 of Port 1
bit 6 of Port 1
bit 7 of Port 1
Reset
bit 0 of Port 3 & Receive data
bit 1 of Port 3 & Transmit data
bit 2 of Port 3 & low true Interrupt 0
bit 3 of Port 3 & low true Interrupt 1
bit 4 of Port 3 & Timer 0
bit 5 of Port 3 & Timer 1
bit 6 of Port 3 & Write (low enable)
bit 7 of Port 3 & Read (low enable)
Crystal out
Crystal in
Sink Voltage, Ground
bit 0 of Port 2 & Address 8
bit 1 of Port 2 & Address 9
bit 2 of Port 2 & Address 10
bit 3 of Port 2 & Address 11
bit 4 of Port 2 & Address 12
bit 5 of Port 2 & Address 13
bit 6 of Port 2 & Address 14
bit 7 of Port 2 & Address 15
Program store enable (low enable)
Address latch enable
External access first 4K memory
bit 7 of Port 0 & Address or Data 7
bit 6 of Port 0 & Address or Data 6
bit 5 of Port 0 & Address or Data 5
bit 4 of Port 0 & Address or Data 4
bit 3 of Port 0 & Address or Data 3
bit 2 of Port 0 & Address or Data 2
bit 1 of Port 0 & Address or Data 1
bit 0 of Port 0 & Address or Data 0
Drive Voltage, +3 Vcc (or +5 Vcc)
Rev. 1.0 February 1998
4
MOSEL [ MOSEL VITELIC, CORP ]
