Fujitsu Semiconductor Controller MB89950/950A Hardware Manual page 28

CHAPTER 1 OVERVIEW
Table 1.7-2 Pin description for external ROM (for MB89PV950 only)
Pin no.
66
67
68
69
70
71
72
73
74
75
77
78
79
80
82
83
84
85
86
87
88
89
91
92
93
94
95
96
65
76
81
90
14
Pin name I/O
V
O
PP
A12
A7
A6
A5
A4 O
A3
A2
A1
A0
O1
O2 I
O3
V
O
SS
O4
O5
O6 I
O7
O8
CE O
A10 O
OE O
A11
A9 O
A8
A13
O
A14
V
O
CC
N.C. --
Function
For high-level output.
For address output.
For data input.
For power supply (GND).
For data input.
For ROM chip enable.
The High level is output in standby mode.
For address output.
For ROM output enable.
The Low level is always output.
For address output.
For address output.
For EPROM power supply.
For internal connection.
Keep open.