Electronics America 4-Bit Single-Chip Microcomputer User's Manual

7
CHAPTER 1. GENERAL
(2) PROM mode
A0 to A14 : Address input
O0 to O7 : Data input/output
CE : Chip enable input
OE : Output enable input
V
DD : Power supply
V
PP : Program power supply
V
SS : Ground
V PP
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
DD
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
µ
PD75P402C/CT