AK5321024W_09 [ACCUTEK]
Dynamic Random Access Memory; 动态随机存取存储器
| 型号： | AK5321024W_09 |
| 厂家： | 
ACCUTEK MICROCIRCUIT CORPORATION |
| 描述： | Dynamic Random Access Memory |
| 文件： | 总2页 (文件大小：72K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AK5321024W
1,048,576 Word by 32 Bit CMOS
Dynamic Random Access Memory
ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK5321024W high density memory module is a
CMOS Dynamic RAM organized in 1024K x 32 bit words. The
module consists of eight standard 1 Meg x 4 DRAMs in plastic SOJ
packages. The assembly has eight drams mounted on the front
surface of a printed circuit board with a low profile height of only
0.875" in a 72 pin leadless SIM configuration. This configuration
allows socket-mounting of large quantities of memory in applica-
tions where high density and ease of inserting additional memory
are important.
+
+
1
72
The operation of the AK5321024W is identical to eight 1 Meg x 4
DRAMs. There are four CAS lines and two RAS lines. Independent
byte control is accomplished by four CAS lines. Each separate CAS
line controls two of the 1 Meg x 4 DRAMs to form an 8 bit byte. The
bank of 32 bits is controlled by the two RAS lines. A sixteen bit data
path can be produced by connecting DQ0 to DQ16, DQ1 to DQ17
etc. and alternately strobing RAS0 with RAS2.
,
· Available in Fast Page Mode and EDO
· Available in leadless SIM or leaded ZIP versions
· Downward compatible with AK532512 and AK532256
FEATURES
· 1,048,576 x 32 bit organization
· Low profile board height of 0.875 inch
· 72 pad Single In-Line Module
· Upward compatible with AK5322048, AK5324096 and
AK5328192
· Operating free air temperature 00C to 700C
· Multiple CAS and RAS lines allow x16 or x32 bit widths
· Power
ADDITIONAL OPTIONS AVAILABLE
· 256K x 32 version, AK532256
5.28 Watt Max Active (60nS)
4.40 Watt Max Active (70 nS)
44 mW Max Standby
· 512K x 32 version, AK532512
· CAS-before-RAS, RAS-only or hidden refresh
· Single 5 Volt Power Supply
· 2 Meg x 32 version, AK5322048
· 4 Meg x 32 version, AK5324096
· 8 Meg x 32 version, AK5328192
· 1024 Refresh Cycles, 16 mSEC
PIN NOMENCLATURE
PIN ASSIGNMENT
Pin #
1
Symbol
Vss
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Symbol
NC
Pin #
37
38
39
40
41
42
43
44
45
46
47
48
46
50
51
52
53
54
Symbol
NC
Pin #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Symbol
DQ11
DQ27
DQ12
DQ28
Vcc
A0 - A9
Address Inputs
2
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
DQ0 - DQ31
CAS0 - CAS3
RAS0 & RAS2
WE
Data In/Data Out
Column Address Strobe
Row Address Strobe
Write Enable
3
Vss
4
CAS0
CAS2
CAS3
CAS1
RAS0
NC
5
6
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
NC
7
8
9
PD1 - PD4
Vcc
Presence Detect
5v Supply
10
11
12
13
14
15
16
17
18
NC
NC
NC
WE
A0
Vcc
NC
Vss
Ground
A1
A8
DQ8
DQ24
DQ9
DQ25
DQ10
DQ26
PD1
A2
A9
PD2
NC
No Connect
A3
NC
PD3
A4
RAS2
NC
PD4
A5
NC
MODULE OPTIONS
A6
NC
Vss
Presence Detect
Leadless SIM: AK5321024W
-60
-70
PD1
PD2
PD3
PD4
Vss
Vss
NC
NC
Vss
Vss
Vss
NC
Leaded ZIP: AK5321024Z
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
4.250"
3.985"
0.200"
MAX
+
+
0.875"
MAX
72
0.425"
0.375"
1
0.250"
0.050"
TYP
0.125"
0.080"
C
C
C C
L
L
L
L
Accutek reserves the right to make changes in specifications at any time
and without notice. Accutek does not assume any responsibility for the
use of any circuitry described; no circuit patent licenses are implied. Pre-
liminary data sheets contain minimum and maximum limits based upon
design objectives, which are subject to change upon full characterization
over the specific operating conditions.
5 NEW PASTURE ROAD
NEWBURYPORT, MA 01950-4040
PHONE: 978-465-6200 FAX: 978-462-3396
Email: sales@accutekmicro.com
Internet: www.accutekmicro.com
ACCUTEK
MICROCIRCUIT CORPORATION
相关型号：
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