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AK632128AZ-12 参数 Datasheet PDF下载

AK632128AZ-12图片预览
型号: AK632128AZ-12
PDF下载: 下载PDF文件 查看货源
内容描述: 131,072 ×32位CMOS / BiCMOS工艺静态随机存取存储器 [131,072 x 32 Bit CMOS/BiCMOS Static Random Access Memory]
分类和应用: 存储
文件页数/大小: 2 页 / 107 K
品牌: ACCUTEK [ ACCUTEK MICROCIRCUIT CORPORATION ]
 浏览型号AK632128AZ-12的Datasheet PDF文件第2页  
DESCRIPTION
Accutek
Microcircuit
Corporation
AK632128AW / AK632128AZ
131,072 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
Top View
The Accutek AK632128W SRAM Module consists of fast high per-
formance SRAMs mounted on a low height, 64 pin SIM or ZIP PCB.
The module utilizes four 32 pin 128K x 8 SRAMs in 300 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 0.600 inch SIM or 0.520 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,
PD
0
and PD
1
, minimizes interchangeability and design consider-
ations when changing from one module size to the other in cus-
tomer applications.
1
64-Pin SIMM
32
33
64
64-Pin ZIP
1
32
33
64
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, 0.600 inch MAX seated height SIM Version
Very low profile, 0.520 inch MAX seated height ZIP Version
Single 5 volt power supply - AK632128AW, AK632128AZ
Single 3.3 volt power supply - AK632128AW/3.3,
AK632128AZ/3.3
·
Common I/O, single OE functions with four separate chip se-
lects (CE)
·
Presence Detect PD
0
and PD
1
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 70
0
C
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.
PIN NOMENCLATURE
A
0
- A
16
CE
1
- CE
4
DQ
1
- DQ
32
OE
PD
0
- PD
1
Vcc
Vss
WE
NC
Address Inputs
Chip Enable
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
Write Enable
No Connect
PIN ASSIGNMENT
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
FUNCTIONAL DIAGRAM
CE4
CE3
NC
A16
OE
Vss
DQ25
DQ17
DQ26
DQ18
DQ27
DQ19
DQ28
DQ20
A3
A10
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
A4
A11
A5
A12
Vcc
A13
A6
DQ21
DQ29
CE
CE1 +
A0 - A16
* WE
DQ1 - DQ8
+ DQ9 - DQ16
* OE
A0 - A16 +
WE +
OE +
17
A0 - A16
* WE
DQ1 - DQ8
* OE
CE
+ DQ1 - DQ8
1
2
3
4
5
6
7
8
9
10
11
12
Vss
PD0
PD1
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
DQ4
DQ12
Vcc
A0
A7
A1
A8
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
A2
A9
DQ13
DQ5
DQ14
DQ6
DQ15
DQ7
DQ16
DQ8
Vss
WE
A15
A14
CE2
CE1
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
DQ22
DQ30
DQ23
DQ31
DQ24
CE2 +
A0 - A16
* WE
DQ1 - DQ8
+ DQ17 - DQ24
* OE
CE
MODULE OPTIONS
Leadless SIM: AK632128AW
Leaded ZIP: AK632128AZ
13
14
15
16
DQ32
Vss
CE3 +
A0 - A16
* WE
DQ1 - DQ8
* OE
CE
CE4 +
+ DQ25 - DQ32
PD
0
= Open
PD
1
= Open
*
*
*
*