W78E51B Winbond, W78E51B Datasheet - Page 2

• Manufacturer Part Number: W78E51B
• Description: 8-BIT MTP MICROCONTROLLER
• Manufacturer: Winbond

PIN CONFIGURATIONS
INT1, P3.3
RXD, P3.0
INT2, P4.3
INT0, P3.2
TXD, P3.1
40-Pin DIP (W78E51B)
44-Pin PLCC (W78E51BP)
T0, P3.4
T1, P3.5
P1.5
P1.6
P1.7
RST
7
8
9
10
11
12
13
14
15
16
17
18
P
1
.
4
P
3
.
6
,
/
W
R
6 5 4 3
19
P
3
.
7
,
/
R
D
P
1
.
3
20
P
1
.
2
X
T
A
L
2
21
P
1
.
1
X
T
A
L
1
22
P
1
.
0
V
S
S
2 1 44 43 42 41
23
P
4
.
0
/
I
N
T
3
,
P
4
.
2
24
V
D
D
P
2
.
0
,
A
8
25
P
2
.
1
,
A
9
A
D
0
,
P
0
.
0
26
P
2
.
2
,
A
1
0
A
D
1
,
P
0
.
1
27
A
D
2
,
P
0
.
2
P
2
.
3
,
A
1
1
INT0, P3.2
INT1, P3.3
28
RXD, P3.0
TXD, P3.1
WR, P3.6
40
A
D
3
,
P
0
.
3
P
2
.
4
,
A
1
2
RD, P3.7
39
38
37
36
35
34
33
32
31
30
29
T0, P3.4
T1, P3.5
XTAL2
XTAL1
P1.0
P1.1
VSS
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
P4.1
ALE
PSEN
P2.7, A15
P2.6, A14
P2.5, A13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
- 2 -
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
INT0, P3.2
INT1, P3.3
INT2, P4.3
RXD, P3.0
TXD, P3.1
T0, P3.4
T1, P3.5
VDD
EA
PSEN
P0.0, AD0
P0.1, AD1
P0.2, AD2
P0.3, AD3
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
ALE
P2.7, A15
P2.6, A14
P2.5, A13
P2.4, A12
P2.3, A11
P2.2, A10
P2.1, A9
P2.0, A8
P1.5
P1.6
P1.7
RST
44-Pin QFP (W78E51BF)
Preliminary W78E51B
1
2
3
4
5
6
7
8
9
10
11
12
44 43 42 41
P
1
.
4
P
3
.
6
,
/
W
R
13
P
3
.
7
,
/
R
D
P
1
.
3
14
X
T
A
L
2
P
1
.
2
15
X
T
A
L
1
P
1
.
1
16
40 39 38 37 36 35
P
1
.
0
V
S
S
17
P
4
.
0
/
I
N
T
3
,
P
4
.
2
18
P
2
.
0
,
A
8
V
D
D
19
P
2
.
1
,
A
9
A
D
0
,
P
0
.
0
20
P
2
.
2
,
A
1
0
A
D
1
,
P
0
.
1
21
P
2
.
3
,
A
1
1
A
D
2
,
P
0
.
2
22
34
33
32
31
30
29
28
27
26
25
24
23
P
2
.
4
,
A
1
2
A
D
3
,
P
0
.
3
P4.1
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
ALE
PSEN
P2.7, A15
P2.6, A14
P2.5, A13