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