com90c66 Standard Microsystems Corp., com90c66 Datasheet - Page 40

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com90c66

Manufacturer Part Number
com90c66
Description
Arcnet Controller/transceiver With At Interface And On-chip Ram Corporation
Manufacturer
Standard Microsystems Corp.
Datasheet

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MS0-MS4
IOS0-IOS2
A11-A19
SA2-SA3
SA4-SA15
BALE
BALE
AEN
9
Rising Edge of BALE
Makes Latch Transparent
Falling Edge of BALE
Latches the Address
12
5
2
TRANSPARENT
3
TRANSPARENT
LATCH
LATCH
FIGURE 12 – nMEMCS16 GENERATION
FIGURE 12A - nIOCS16 GENERATION
LA17-LA19
SA11-SA19
12
5
5
9
40
(for 128K segment)
(for 2K segment)
COMPARATOR
COMPARATOR
COMPARATOR
DECODER
2 TO 4
nENROM DECODE
11
10
01
00
MUX
MODE
16EN
nMEMCS16
nIOCS16

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