User guide

W78C801
- 2 -
PIN CONFIGURATIONS
VDD1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
39
40
34
35
36
37
38
30
31
32
33
26
27
28
29
21
22
23
24
25
P0.0, AD0
P0.1, AD1
P0.2, AD2
P0.3, AD3
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
ALE,P4.5
PSEN,P4.6
P2.5, A13
P2.6, A14
P2.7, A15
P2.0, A8
P2.1, A9
P2.2, A10
P2.3, A11
P2.4, A12
INT2, P1.0
40-Pin DIP (W78C801)
INT4,P1.2
INT5,P1.3
INT6,P1.4
INT7,P1.5
INT8,P1.6
P3.0
P3.1
INT9,P1.7
RST
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
WR, P3.6
RD, P3.7
XTAL1
XTAL2
VSS
INT3, P1.1
44-Pin PLCC (W78C801P)
44-Pin QFP (W78C801F)
34
40
39
38 37 36
3544
43 42 41
33
32
31
30
29
28
27
26
25
24
23
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
ALE,P4.5
PSEN,P4.6
P2.7, A15
P2.6, A14
P2.5, A13
2221201918171615141312
11
4
3
2
1
8
7
6
5
10
9
X
T
A
L
1
V
S
S
P
2
.
4
,
A
1
2
P
2
.
3
,
A
1
1
P
2
.
2
,
A
1
0
P
2
.
1
,
A
9
P
2
.
0
,
A
8
X
T
A
L
2
P
3
.
7
,
/
R
D
P
3
.
6
,
/
W
R
40
2 1 44 43 42
41
6543
39
38
37
36
35
34
33
32
31
30
29
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
ALE,P4.5
PSEN,P4.6
P2.7, A15
P2.6, A14
P2.5, A13
2827262524232221201918
17
10
9
8
7
14
13
12
11
16
15
X
T
A
L
1
V
S
S
P
2
.
4
,
A
1
2
P
2
.
3
,
A
1
1
P
2
.
2
,
A
1
0
P
2
.
1
,
A
9
P
2
.
0
,
A
8
X
T
A
L
2
P
3
.
7
,
/
R
D
P
3
.
6
,
/
W
R
P
4
.
0
P4.1
P4.1
P
4
.
0
A
D
3
,
P
0
.
3
,
P
1
.
0
P
1
.
2
V
D
D
A
D
2
,
P
0
.
2
A
D
1
,
P
0
.
1
A
D
0
,
P
0
.
0
P
1
.
1
P
1
.
3
P
1
.
4
P
4
.
2
,
I
N
T
3
,
I
N
T
6
,
I
N
T
5
,
I
N
T
4
I
N
T
2
A
D
3
,
P
0
.
3
,
P
1
.
0
P
1
.
2
V
D
D
A
D
2
,
P
0
.
2
A
D
1
,
P
0
.
1
A
D
0
,
P
0
.
0
,
P
1
.
1
P
1
.
3
P
1
.
4
P
4
.
2
I
N
T
3
,
I
N
T
6
,
I
N
T
5
,
I
N
T
4
I
N
T
2
INT7,P1.5
INT8,P1.6
INT9,P1.7
RST
P3.0
P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
P4.3
INT7,P1.5
INT8,P1.6
INT9,P1.7
RST
P3.0
P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
P4.3