W78C438C Datasheet, PDF (14/16 Pages) Winbond – 8-BIT MICROCONTROLLER

TYPICAL APPLICATION CIRCUITS
Using 128K × 8 bit External EPROM (W27E010)
W78C438C
5 V ^{10 U}
8.2 K
1999999999988888888 8
09876 54 3210 987654 321
0
NP P P P PD DDDD DD DV P P PP N
C1 1 1 1 1 P P PP P P P PD0 0 0 0 C
. . . . . 4 4 4 4 4 4 4 4 D. . . .
4 3 21 0. . . . . . . .
1 NC
7 6543 21 0
0
1
2
3
NC
80
2 NC
NC ⁷⁹
3 NC
NC 78
4 NC
NC 77
5 _P1.5
6 _P1.6
7 P1.7
8 _RESET
P0.4 76
P0.5 75
P0.6 74
P0.7 73
9 _P8.0
EA 72
10 P8.1
AP5.0 71
11 P8.2
AP5.1 70
12 P8.3
AP5.2 69
13 P8.4
AP5.3 68
14 P8.5
15 P8.6
W78C438C
AP5.4 67
AP5.5 66
16 P8.7
AP5.6 65
17 INT3
AP5.7 64
18 _INT2
19 P3.0, RXD
VDD 63
VSS 62
20 VDD
ALE 61
21 P3.1, TXD
PSEN 60
22 P3.2, INT0
23 P3.3, INT1
24 _{P3.4, T0}
25 P3.5, T1
P2.7 59
P2.6 58
P2.5 57
P2.4 56
26 P3.6, WR
NC 55
27 NC
NC 54
28 NC
NC 53
29 NC
30 NC
AAA A
PPP P
NC 52
P2.3 51
P
777 7
3
... .
.
321 0
7XX
, , , , AAAAAAAA
, TT
/ / / / PPP PPPPPPP P
/ A AV CCC C 6 6 6 6 6 6 6 6 2 2 2
RL LSN SSS S . . . . . . . . . . .
D2 1SC 3 2 1 0 7 6 5 4 3 2 1 0 0 1 2
3 3 33 3 3 3 3 34 4 4 4 4 4 4 4 4 4 5
12345 67890 1234567890
R
C1
C2
12 _A0
11
10
A1
A2
9 _A3
8 _A4
7 _A5
6 _A6
5
27
26
23
25
4
A7
A8
A9
A10
A11
A12
28 _A13
29 _A14
3 _A15
2 _A16
22
GND
CE
24
OE
W27E010
O0 ¹³
O1 ¹⁴
O2 ¹⁵
O3
O4
O5
O6
O7
17
18
19
20
21
1
Vpp
32
Vcc
31
PGM
Vss ¹⁶
Figure A
- 14 -