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参数资料
| 型号： | AK632256Z-15 |
| 厂商： | Accutek Microcircuit Corporation |
| 英文描述： | 262,144 x 32 Bit CMOS/BiCMOS Static Random Access Memory |
| 中文描述： | 262,144 × 32位的CMOS / BiCMOS工艺静态随机存取存储器 |
| 文件页数： | 1/2页 |
| 文件大小： | 140K |
| 代理商： | AK632256Z-15 |
DESCRIPTION
The Accutek AK632256 SRAM Module consists of eight fast high
performance SRAMs mounted on a low profile, 64 pin SIM or ZIP
Board. The module utilizes four 28 pin 256K x 4 SRAMs in SOJ
packages and four decoupling capacitors mounted on each side of
a printed circuit board.
TheSRAMsusedhavecommonI/Ofunctionsandsingleoutputen-
ablefunctions. Also,fourseparatechipselect(CE)connectionsare
used to independently enable the four bytes. The modules can be
supplied in a variety of access time values from 12 nSEC to
45 nSEC in CMOS or BiCMOS technology.
The Accutek module is designed to have a maximum seated height
of 0.680 inch SIM or 0.540 inch ZIP to provide for the lowest height
off the board. By offset-mounting the back surface SRAMs on the
SIM version, the module can be mounted in either angled or
straight-up SIM sockets. Each conforms to JEDEC standard sizes
andpin-outconfigurations. Usingtwopinsformodulememoryden-
sity identification, PD
0
and PD
1
, minimizes interchangeability and
design considerations when changing from one module size to an-
other in customer applications.
FEATURES
262,144 x 32 bit organization
JEDEC Standardized 64 pin SIM or ZIP format
Common I/O, single OE functions with four separate chip
selects (CE)
Low height, 0.680 inch SIM or 0.540 inch ZIP maximum
Upward compatible with 512K x 32 (AK532512) and
1 Meg x 32 (AK6321024)
Downward compatible with 32K x 32 (AK63232), 64K x 32
(AK63264) and 128K x 32 (AK632128)
Presence Detect PD
0
and PD
1
for identifying module density
Fast access times range from 12 nSEC BiCMOS to 45 nSEC
CMOS
TTL-compatible inputs and outputs
Single 5 volt power supply - AK632256W, AK632256Z
Single 3.3 volt power supply - AK632256W/3.3,
AK632256Z/3.3
Operating temperature range in free air, 0
0
C to 70
0
C
ELECTRICAL SPECIFICATIONS
Timing diagrams and basic electrical characteristics are those of
the standard 256K x 4 SRAMs used to construct these modules.
Accutek’s module design allows the flexibility of selecting indus-
try-compatible256Kx4SRAMsfromseveralsemiconductormanu-
facturers.
PIN ASSIGNMENT
Accutek
Microcircuit
Corporation
AK632256W / AK632256Z
262,144 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
64-Pin ZIP
64-Pin SIM
Front View
1
1
32
32
33
33
64
64
PIN NOMENCLATURE
A
0
- A
17
Address Inputs
CE
1
- CE
4
Chip Enable
DQ
1
- DQ
32
Data In/Data Out
OE
Output Enable
PD
0
- PD
1
Presence Detect
Vcc
Power Supply
Vss
Ground
WE
Write Enable
MODULE OPTIONS
Leadless SIM: AK632256W
Leaded SIP: AK632256G
Leaded ZIP: AK632256Z
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
1
Vss
17
A
2
33
CE
4
49
A
4
2
PD
0
18
A
9
34
CE
3
50
A
11
3
PD
1
19
DQ
13
35
A
17
51
A
5
4
DQ
1
20
DQ
5
36
A
16
52
A
12
5
DQ
9
21
DQ
14
37
OE
53
Vcc
6
DQ
2
22
DQ
6
38
Vss
54
A
13
7
DQ
10
23
DQ
15
39
DQ
25
55
A
6
8
DQ
3
24
DQ
7
40
DQ
17
56
DQ
21
9
DQ
11
25
DQ
16
41
DQ
26
57
DQ
29
10
DQ
4
26
DQ
8
42
DQ
18
58
DQ
22
11
DQ
12
27
Vss
43
DQ
27
59
DQ
30
12
Vcc
28
WE
44
DQ
19
60
DQ
23
13
A
0
29
A
15
45
DQ
28
61
DQ
31
14
A
7
30
A
14
46
DQ
20
62
DQ
24
15
A
1
31
CE
2
47
A
3
63
DQ
32
16
A
8
32
CE
1
48
A
10
64
Vss
PD
0
= Vss
PD
1
= Vss
FUNCTIONAL DIAGRAM
相关PDF资料 |
PDF描述 |
|---|---|
| AK63232Z | 32,768 x 32 Bit CMOS / BiCMOS Static Random Access Memory |
| AK632512AW | 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory |
| AK632512AW-15 | 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory |
| AK632512G | 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory |
| AK632512W | 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AK632256Z-20 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 SRAM Module |
| AK632256Z-25 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 SRAM Module |
| AK632256Z-35 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 SRAM Module |
| AK632256Z-45 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 SRAM Module |
| AK63232 | 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:131,072 x 32 Bit CMOS/BiCMOS Static Random Access Memory |
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