参数资料
型号: AK632256BZ
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: 117K
代理商: AK632256BZ
DESCRIPTION
The Accutek AK632256BZ SRAM Module consists of fast high per-
formance SRAMs mounted on a low profile, 64 pin SIM or ZIP
Board. The module utilizes four 28 pin 256K x 4 SRAMs in 300 mil
SOJ packages and four decoupling capacitor chips mounted on
each side of a printed circuit board.
The SRAMsusedhavecommonI/O functionsandsingleoutputen-
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 designedto have a maximum seated height
of 0.500 inch to provide for the lowest height off the board. The
modules conform to JEDEC standard sizes and pin-out configura-
tions. Usingtwopinsformodulememorydensityidentification,PD
0
and PD
1
, minimizes interchangeability and design considerations
when changing from one module size to another in customer appli-
cations.
FEATURES
262,144 x 32 bit organization
JEDEC Standardized 64 pin SIM format
Presence Detect PD
0
and PD
1
for identifying module density
Common I/O, single OE functions with four separate chip
selects (CE)
Low height 0.500 inch maximum
Downward compatible with 128K x 32 (AK632128), 64K x 32
(AK63264) and 32K x 32 (AK63232)
TTL-compatible inputs and outputs
Upward compatible with 512K x 32 (AK632512) and 1 Meg x 32
(AK6321024)
Fast access times range from 12 nSEC BiCMOS to 45 nSEC
CMOS
TTL-compatible inputs and outputs
Single 5 volt power supply - AK632256BZ
Single 3.3 volt power supply - AK632256BZ/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.
Accutek
Microcircuit
Corporation
AK632256BZ
262,144 x 32 Bit CMOS/BiCMOS
Static Random Access Memory
64-Pin ZIP
1
32
33
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
5v Supply
Vss
Ground
WE
Write Enable
MODULE OPTIONS
Leaded ZIP: AK632256BZ
PIN ASSIGNMENT
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
PIN #
SYMBOL
1
Vss
17
A2
33
CE4
49
A4
2
PD0
18
A9
34
CE3
50
A11
3
PD1
19
DQ13
35
A17
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
47
A3
63
DQ32
16
A8
32
CE1
48
A10
64
Vss
PD
0
= Vss
PD
1
= Vss
FUNCTIONAL DIAGRAM
相关PDF资料
PDF描述
AK632256BZ-12 262,144 x 32 Bit CMOS/BiCMOS Static Random Access Memory
AK632256W-72 262,144 x 32 Bit CMOS/BiCMOS 72 Pin Format Static Random Access Memory
AK632256W72-12 262,144 x 32 Bit CMOS/BiCMOS 72 Pin Format Static Random Access Memory
AK632256Z-15 262,144 x 32 Bit CMOS/BiCMOS Static Random Access Memory
AK63232Z 32,768 x 32 Bit CMOS / BiCMOS Static Random Access Memory
相关代理商/技术参数
参数描述
AK632256BZ_09 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:Static Random Access Memory
AK632256BZ-12 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:262,144 x 32 Bit CMOS/BiCMOS Static Random Access Memory
AK632256D 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:32,768 x 32 Bit CMOS / BiCMOS Static Random Access Memory
AK632256G 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:262,144 x 32 Bit CMOS/BiCMOS Static Random Access Memory
AK632256S 制造商:ACCUTEK 制造商全称:ACCUTEK MICROCIRCUIT CORPORATION 功能描述:32,768 x 32 Bit CMOS/BiCMOS Static Random Access Memory