AK5322048WP-80 [ETC]
x32 Fast Page Mode DRAM Module ; X32快速页模式DRAM模块\n
| 型号： | AK5322048WP-80 |
| 厂家： | 
ETC |
| 描述： | x32 Fast Page Mode DRAM Module
|
| 文件： | 总2页 (文件大小：74K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Accutek
Microcircuit
Corporation
AK5322048W
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK53220482W high density memory module is a
CMOS dynamic RAM organized in 2048 x 32 bit words. The module
consists of sixteen standard 1 Meg x 4 DRAMs in plastic SOJ pack-
ages. The assembly has eight drams mounted on each side of a
printed circuit board in a 72 pad leadless SIM configuration.
+
+
1
72
This configuration allows socket-mounting of large quantities of
memory in applications where high density and ease of inserting ad-
ditional memory are important.
The operation of the AK5322048 is identical to sixteen 1Meg x 4
Drams. There are four CAS lines and four RAS lines. On each bank
of 1Meg x 32, independent byte control is accomplished by the four
CAS lines, where each seperate CAS line controls two 1Meg x 4
Drams. Two banks of 32 bits are controlled by the two pairs of RAS
lines. A sixteen bit data path can be produced by connecting DQ1 to
DQ17, DQ2 to DQ18, and alternately strobing RAS0 with RAS1 and
RAS2 with RAS3.
· Power
5.32 Watt Max Active (60nS)
4.44 Watt Max Active (70 nS)
3.79 Watt Max Active (80 nS)
88 mW Max Standby
· Available in leadless SIM or leaded Zip versions
FEATURES
· Downward compatible with AK5321024, AK532512 and
AK532256
· 2,097,152 x 32 bit organization
· Upward compatible with AK5324096 and AK5328192
· 72 pad Single In-Line Module
· Multiple CAS and RAS lines allow x16 or x32 bit widths
· CAS-before-RAS, RAS-only or hidden refresh
· Operating free air temperature 0oC to 70oC
· Single 5 Volt Power Supply
ADDITIONAL OPTIONS AVAILABLE
· 256K x 32 Version, AK532256
· 512K x 32 version, AK532512
· 1 Meg x 32 version, AK5321024
· 4 Meg x 32 version, AK5324096
· 8 Meg x 32 version, AK5328192
· 2048 Refresh Cycles
· Available in Fast Page Mode EDO versions
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
DQ0 - DQ31
A0 - A9
Data In/Data Out
2
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
3
Vss
4
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
CAS0 - CAS3
RAS0 - RAS3
WE
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
WE
A0
Vcc
NC
Vss
Ground
A1
A8
DQ8
DQ24
DQ9
DQ25
DQ10
DQ26
PD1
A2
A9
PD2
NC
No Connect
A3
RAS3
RAS2
NC
PD3
A4
PD4
A5
NC
MODULE OPTIONS
Leadless SIM: AK5322048W
Leaded ZIP: AK5322048Z
A6
NC
Vss
Presence Detect -1 Meg x 32
Presence Detect - 2 Meg x 32
-60
Vss
Vss
NC
NC
-70
Vss
Vss
Vss
NC
-80
-60
NC
NC
NC
NC
-70
NC
NC
Vss
NC
-80
NC
NC
NC
Vss
PD1
PD2
PD3
PD4
Vss
Vss
NC
PD1
PD2
PD3
PD4
Vss
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
4.250"
3.985"
0.330"
MAX
1.000"
MAX
0.425"
0.375"
0.250"
1
72
0.050"
TYP
0.125"
0.080"
C C
L L
C C
L L
ACCUTEK MICROCIRCUIT CORPORATION
BUSINESS CENTER at NEWBURYPORT
2 NEW PASTURE ROAD, SUITE 1
NEWBURYPORT, MA 01950-4054
PHONE: 978-465-6200 FAX: 978-462-3396
Email: accutek@seacoast.com
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. Preliminary data sheets contain minimum and maximum limits
based upon design objectives, which are subject to change upon full characterization over
the specific operating conditions.
Internet: www.accutekmicro.com
相关型号：
©2020 ICPDF网 联系我们和版权申明