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Part Name
Description
MB89990 View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB89990
8-bit Proprietary Microcontroller
Fujitsu
MB89990 Datasheet PDF : 42 Pages
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MB89990 Series
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External EPROM pins (MB89PV190 only)
Pin no.
49
79
78
50
75
71
76
77
51
52
53
54
55
58
59
60
61
62
63
65
66
67
68
69
70
73
80
64
Pin name
V
PP
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
O1
O2
O3
O4
O5
O6
O7
O8
CE
OE
V
CC
V
SS
I/O
Function
O
“H” level output pin
O
Address output pins
I
Data input pins
O
ROM chip enable pin
Outputs “H” during standby.
O
ROM output enable pin
Outputs “L” at all times.
O
EPROM power pin
O
Power supply (GND) pin
9
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