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W78LE54 View Datasheet(PDF) - Winbond
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W78LE54
8-BIT MTP MICROCONTROLLER
Winbond
W78LE54 Datasheet PDF : 22 Pages
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Preliminary W78LE54
Typical Application Circuits, continued
Expanded External Data Memory and Oscillator
V
DD
V
DD
10 u
OSCILLATOR
8.2 K
31
EA
19
XTAL1
18
XTAL2
9
RST
12
INT0
13
INT1
14
15
T0
T1
1
P1.0
2
P1.1
3
4
P1.2
P1.3
5
6
P1.4
P1.5
7
8
P1.6
P1.7
W78LE54
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
RD
WR
PSEN
ALE
TXD
RXD
39 AD0
38 AD1
37 AD2
36 AD3
35 AD4
34 AD5
33 AD6
32 AD7
21 A8
22 A9
23 A10
24 A11
25 A12
26 A13
27 A14
28
17
16
29
30
11
10
AD0 3
D0 Q0
2 A0
A0 10
A0
D0
11
AD0
AD1 4 D1 Q1 5 A1
A1 9
A1
D1 12
AD1
AD2 7 D2 Q2 6 A2
A2 8
A2
D2 13
AD2
AD3 8 D3 Q3 9 A3
A3 7
A3
D3 15
AD3
AD4 13
D4 Q4
12 A4
A4 6
A4
D4
16
AD4
AD5 14
D5 Q5
15 A5
A5 5
A5
D5 17
AD5
AD6 17
D6 Q6
16 A6
A6 4
A6
D6
18
AD6
AD7 18
D7 Q7
19 A7
A7 3
A7
D7
19
AD7
GND 1
OC
A8 25
A8
A9 24
A9
11
G
A10 21
A10
A11 23
A11
74373
A12 2
A12
A13 26
A13
A14 1
A14
GND 20
CE
22 OE
27
WR
20256
Figure B
- 20 -
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