AK532256AW [ACCUTEK]
262,144 Word by 32 Bit CMOS Dynamic Random Access Memory; 262,144字由32位CMOS动态随机存取存储器
| 型号： | AK532256AW |
| 厂家： | 
ACCUTEK MICROCIRCUIT CORPORATION |
| 描述： | 262,144 Word by 32 Bit CMOS Dynamic Random Access Memory |
| 文件： | 总2页 (文件大小：67K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Accutek
Microcircuit
Corporation
AK532256AW
262,144 Word by 32 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK532256AW high density memory module is a
CMOS dynamic RAM organized in 265K x 32 bit words. The mod-
ule consists of two standard 256K x 16 bits DRAMs in plastic SOJ
packages. The assembly has 2 DRAMs mounted on the front side
of a printed circuit board in a 72 pad leadless SIM configuration.
This configuration allows socket-mounting of large quantities of
memory in applications where high density and ease of inserting ad-
ditional memory are important.
72
1
The operation of the AK532256AW is identical to eight 256K x 4
Drams. There are four CAS lines and two RAS lines. On each bank
of 256K x 32, independent byte control is accomplished by four CAS
lines. Each seperate CAS line controls one byte of the 256K x 16
Dram.
FEATURES
· 262,144 x 32 bit organization
· Available in Fast Page Mode or EDO
· 72 pad Single In-Line Module
· Upward compatible with AK532512W, AK5321024W,
AK5322048W, AK5324096W and AK5328192W
· 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 36 version, AK536256W
· 512K x 32 version, AK532512W
· 512K x 36 version, AK536512W
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode
· Power: 2.090 Watt Max Active (50 nS)
1.870 Watt Max Active (60 nS)
1.760 Watt Max Active (70 nS)
22 mW Max Standby
PIN NOMENCLATURE
PIN ASSIGNMENT
DQ0 - DQ31
A0 - A8
Data In/Data Out
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
49
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
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
2
DQ0
DQ16
DQ1
DDQ17
DQ2
DQ18
DQ3
DQ19
Vcc
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
3
Vss
CAS0 - CAS3
RAS0, RAS2
WE
4
CAS0
CAS2
CAS3
CAS1
RAS0
NC
5
6
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
NC
7
8
PD1 - PD4
Vcc
Presence Detect
5v Supply
9
10
11
12
13
14
15
16
17
18
NC
NC
NC
WE
Vss
Ground
A0
Vcc
NC
A1
A8
DQ8
DQ24
DQ9
DQ25
DQ10
DQ26
PD1
NC
No Connect
A2
NC
PD2
A3
NC
PD3
A4
RAS2
NC
PD4
MODULE OPTIONS
A5
NC
A6
NC
Vss
Leadless SIM: AK532256AW
Leaded ZIP: AK532256AZ
Presence Detect -
-60
-70
-80
PD1
PD2
PD3
PD4
Vss
NC
NC
NC
Vss
NC
Vss
NC
Vss
NC
NC
Vss
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
4.250"
3.985"
0.200"
MAX
+
+
72
0.700"
0.425"
MAX
0.375"
0.250"
72
1
0.050"
TYP
0.125"
0.080"
C
C
C C
L
L
L
L
ACCUTEK MICROCIRCUIT CORPORATION
BUSINESS CENTER at NEWBURYPORT
2 NEW PASTURE ROAD, SUITE 1
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.
NEWBURYPORT, MA 01950-4054
PHONE:
E-Mail:
Internet:
978-465-6200
sales@accutekmicro.com
www.accutekmicro.com
FAX:
978-462-3396
相关型号：
©2020 ICPDF网 联系我们和版权申明