MSU2051 Datasheet, PDF (4/21 Pages) Mosel Vitelic, Corp – low working voltage 16 MHz ROM less MCU

MOSEL VITELIC
Pin Descriptions
MSU2051/U2031
40 PDIP Dice 44 LQFP 44 PQFP 44 PLCC Symbol
Pin# Pad# Pin# Pin# Pin#
1
1
40
40
2
P1.0
2
2
41
41
3
P1.1
3
3
42
42
4
P1.2
4
4
43
43
5
P1.3
5
5
44
44
6
P1.4
6
6
1
1
7
P1.5
7
7
2
2
8
P1.6
8
8
3
3
9
P1.7
9
9
4
4
10 RES
10 10
5
5
11 RXD/P3.0
11 11
7
7
13 TXD/P3.1
12 12
8
8
14 #INT0/P3.2
13 13
9
9
15 #INT1/P3.3
14 14
10
10
16 T0/P3.4
15 15
11
11
17 T1/P3.5
16 16
12
12
18 #WR/P3.6
17 17
13
13
19 #RD/P3.7
18 18
14
14
20 XTAL2
19 19
15
15
21 XTAL1
20 20-22 16
16
22 VSS
21 23
18
18
24 A8/P2.0
22 24
19
19
25 A9/P2.1
23 25
20
20
26 A10/P2.2
24 26
21
21
27 A11/P2.3
25 27
22
22
28 A12/P2.4
26 28
23
23
29 A13/P2.5
27 29
24
24
30 A14/P2.6
28 30
25
25
31 A15/P2.7
29 31
26
26
32 #PSEN
30 32
27
27
33 ALE
31 33
29
29
35 #EA
32 34
30
30
36 AD7/P0.7
33 35
31
31
37 AD6/P0.6
34 36
32
32
38 AD5/P0.5
35 37
33
33
39 AD4/P0.4
36 38
34
34
40 AD3/P0.3
37 39
35
35
41 AD2/P0.2
38 40
36
36
42 AD1/P0.1
39 41
37
37
43 AD0/P0.0
40 42,43 38
38
44 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/- i/o
L/- i/o
i/o
i/o
L/- i/o
L/- i/o
o
i
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
Lo
Ho
L
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