W78E51B-40 WINBOND [Winbond], W78E51B-40 Datasheet - Page 19

• Manufacturer Part Number: W78E51B-40
• Description: 8-BIT MTP MICROCONTROLLER
• Manufacturer: WINBOND [Winbond]

TYPICAL APPLICATION CIRCUITS
Expanded External Program Memory and Crystal
Note: C1, C2, R components refer to Figure A.
8.2 K
V
DD
10 u
C1
CRYSTAL
Above table shows the reference values for crystal applications (full gain).
C2
V
DD
R
12
13
14
15
18
19
31
8
9
7
1
2
3
4
5
6
16 MHz
24 MHz
33 MHz
40 MHz
CRYSTAL
W78E51B
XTAL2
XTAL1
RST
INT0
INT1
T0
T1
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
EA
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
RD
WR
38
37
39
36
35
21
22
23
24
25
26
27
28
34
33
17
16
29
11
10
32
30
Figure A
AD1
AD2
AD3
AD4
AD5
AD6
AD0
AD7
A9
A10
A11
A12
A15
A8
A13
A14
30P
15P
10P
- 19 -
C1
5P
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
GND
13
14
17
18
11
4
7
8
3
1
74373
30P
15P
10P
D0
D1
D2
D3
D4
D5
D6
D7
G
OC
5P
C2
Preliminary W78E51B
Publication Release Date: December 1998
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
12
15
16
19
2
5
6
9
A0
A1
A2
A3
A4
A5
A6
A7
6.8K
4.7K
R
-
-
GND
A10
A11
A12
A13
A14
A15
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
27
20
22
10
25
24
21
23
26
2
1
9
8
7
6
5
4
3
27512
OE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
CE
O0
O1
O2
O3
O4
O5
O6
O7
Revision A1
11
12
13
15
16
17
18
19
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7