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AK632128W-15 Datasheet(PDF) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION

Part # AK632128W-15
Description  131,072 x 32 Bit CMOS/BiCMOS Static Random Access Memory
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Manufacturer  ACCUTEK [ACCUTEK MICROCIRCUIT CORPORATION]
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AK632128W-15 Datasheet(HTML) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION

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DESCRIPTION
The Accutek AK632128 SRAM Module consists of fast high perfor-
mance SRAMs mounted on a low height, 64 pin SIM or ZIP PCB.
The module utilizes four 32 pin 128K x 8 SRAMs in 400 mil SOJ
packages and four decoupling capacitors mounted on the front side
of a printed circuit board.
The SRAMs used have common I/O functions and single output en-
able functions. Also, four separate chip select (CE) connections are
used to independently enable the four bytes. The modules can be
supplied in a variety of access time values from 7nSEC to 35nSEC
in CMOS or BiCMOS technology.
The Accutek module is designed to have a maximum seated height
of 0.620 inch SIM or 0.540 inch ZIP to provide for the lowest height
off the board. Each conforms to JEDEC-standard sizes and pin-out
configurations. Using two pins for module denisty identification,
PD0 and PD1, minimizes interchangeability and design consider-
ations when changing from one module size to the other in cus-
tomer applications.
FEATURES
· 131,072 x 32 bit organization
· JEDEC Standard 64 pin SIM or ZIP format
· Access times as fast as 7nSEC
· TTL compatible inputs and outputs
· Very low profile, 0.620 inch MAX seated height SIM Version
· Very low profile, 0.540 inch MAX seated height ZIP Version
· Single 5 Volt power supply - AK632128W, AK632128Z
· Single 3.3 Volt power supply - AK63128W/3.3, AK632128Z/3.3
· Common I/O, single OE functions with four separate chip se-
lects (CE)
· Presence Detect PD0 and PD1 for identifying module density
· Downward compatible with 32K x 32 (AK63232) and 64K x 32
AK63264)
· Upward compatible with 256K x 32 (AK632256), 512K x 32
(AK632512) and 1 Meg x 32 (AK6321024)
· Operating free air temperature 0
0 to 700C
ELECTRICAL SPECIFICATIONS
Timing diagrams and basic electrical characteristics are those of
the standard 128K x 8 SRAMs used to construct these modules.
Accutek’s module design allows the flexibility of selecting indus-
try-compatible 128K x 8 SRAMs from at least seven semiconductor
manufacturers.
Accutek
Microcircuit
Corporation
AK632128W / AK632128Z
131,072 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
1
32 33
64
1
32
33
64
Top View
64-Pin SIMM
64-Pin ZIP
PIN NOMENCLATURE
A0 -A16
Address Inputs
CE1 -CE4
Chip Enable
DQ1 -DQ32
Data In/Data Out
OE
Output Enable
PD0 -PD1
Presence Detect
Vcc
Power Supply
Vss
Ground
WE
Write Enable
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK632128W
Leaded ZIP: AK632128Z
PIN ASSIGNMENT
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
1
Vss
17
A2
33
CE449
A4
2
PD0
18
A9
34
CE3
50
A11
3
PD1
19
DQ13
35
NC
51
A5
4
DQ1
20
DQ5
36
A16
52
A12
5
DQ9
21
DQ14
37
OE
53
Vcc
6
DQ2
22
DQ6
38
Vss
54
A13
7
DQ10
23
DQ15
39
DQ25
55
A6
8
DQ3
24
DQ7
40
DQ17
56
DQ21
9
DQ11
25
DQ16
41
DQ26
57
DQ29
10
DQ4
26
DQ8
42
DQ18
58
DQ22
11
DQ12
27
Vss
43
DQ27
59
DQ30
12
Vcc
28
WE
44
DQ19
60
DQ23
13
A0
29
A15
45
DQ28
61
DQ31
14
A7
30
A14
46
DQ20
62
DQ24
15
A1
31
CE2
47A363
DQ32
16
A8
32
CE1
48
A10
64
Vss
PD0 = Open
PD1 = Open
FUNCTIONAL DIAGRAM
A0-A16
A0-A16
A0-A16
A0-A16
WE
WE
WE
WE
DQ1 - DQ8
DQ1 - DQ8
DQ1 - DQ8
DQ1 - DQ8
OE
OE
OE
OE
CE
CE
CE
CE
+
+
+
+
DQ1 - DQ8
DQ9 - DQ16
DQ17 - DQ24
DQ25 - DQ32
+
A0-A16
17
+
*
*
*
*
+
*
*
*
*
+
+
+
+
WE
OE
CE1
CE2
CE3
CE4


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