w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 28
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w78l812a
Manufacturer Part Number
w78l812a
Description
8-bit Mcu Series 80c51-based
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W78L812A.pdf
(31 pages)
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Manufacturer:
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Part Number:
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Manufacturer:
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Quantity:
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Part Number:
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Manufacturer:
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Quantity:
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Company:
Part Number:
w78l812a24PL
Manufacturer:
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Quantity:
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Quantity:
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Typical Application Circuits, continued
11.2 Expanded External Data Memory and Oscillator
8.2 K
VDD
10 u
O SCILLA TO R
VDD
19
18
12
13
14
15
31
9
1
2
3
4
6
7
8
5
EA
XTAL1
XTAL2
RST
T0
T1
INT0
INT1
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
W 78LE812/W 78L812A
PSEN
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
TXD
RXD
ALE
W R
RD
22
24
39
38
37
36
35
34
33
32
21
23
25
26
27
28
17
16
29
30
11
10
Figure B
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A10
A11
A12
A13
A14
- 28 -
A8
A9
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
G N D
18
13
14
17
11
3
4
7
8
1
O C
G
D0
D1
D2
D3
D4
D5
D6
D7
74373
W78LE812/W78L812A
Q 0 2
Q 1 5
Q 2 6
Q 3 9
Q 4 12
Q 5 15
Q 6 16
Q 7 19
A0
A1
A2
A3
A4
A5
A6
A7
G N D
A0
A1
A3
A4
A5
A6
A7
A8
A10
A11
A12
A13
A14
A2
A9
25
24
21
23
26
10
20
22
27
9
8
7
6
5
4
3
2
1
20256
O E
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
CE
W R
D0
D1
D2
D3
D4
D5
D6
D7
11
12
13
15
16
17
18
19
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7