W79E548 Datasheet, PDF (71/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E548/W79L548
19. TYPICAL APPLICATION CIRCUITS
Expanded External Program Memory and Crystal
Vcc
10u
8.2K
Vcc
CRY STAL
R
C1
C2
EA/VP
X1
X2
RESET
INT0
INT1
T0
T1
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
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/P
TXD
RXD
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD0 3
AD1 4
AD2 7
AD3 8
AD4 13
AD5 14
AD6 17
AD7 18
1
11
D0
Q0
D1
Q1
D2
Q2
D3
Q3
D4
Q4
D5
Q5
D6
Q6
D7
Q7
OC
G
74F373
2 A0
5 A1
6 A2
9 A3
12 A4
15 A5
16 A6
19 A7
Figure A
A0 10
A1 9
A2 8
A3 7
A4 6
A5 5
A6 4
A7 3
A8 25
A9 24
A10 21
A11 23
A12 2
A13 26
A14 27
A15 1
20
22
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
CE
OE
27512
O0
O1
O2
O3
O4
O5
O6
O7
11
12
13
15
16
17
18
19
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
CRYSTAL
16 MHz
24 MHz
33 MHz
40 MHz
C1
C2
R
20P
20P
-
12P
12P
-
10P
10P
3.3K
1P
1P
3.3K
The above table shows the reference values for crystal applications.
Note: C1, C2, R components refer to Figure A.
- 71 -
Publication Release Date: December 12, 2005
Revision A1