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AK532512W_09 PDF预览

AK532512W_09

更新时间: 2024-09-28 12:55:55
品牌 Logo 应用领域
ACCUTEK 存储
页数 文件大小 规格书
2页 108K
描述
Dynamic Random Access Memory

AK532512W_09 数据手册

 浏览型号AK532512W_09的Datasheet PDF文件第2页 
AK532512W  
524,288 Word by 32 Bit CMOS  
Dynamic Random Access Memory  
ACCUTEK  
MICROCIRCUIT CORPORATION  
DESCRIPTION  
The Accutek AK532512W high density memory module is a CMOS  
dynamic RAM organized in 512K x 32 bit words. The module con-  
sists of sixteen standard 256K x 4 DRAMs in plastic SOJ packages.  
The assembly has eight drams mounted on each 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.  
1
72  
The operation of the AK532512W is identical to sixteen 256K x 4  
Drams. There are four CAS lines and four RAS lines. On each bank  
of 256K x 32, independent byte control is accomplished by the four  
CAS lines. Each seperate CAS line controls four 256K x 4 Drams.  
Two banks of 32 bits are controlled by the two pairs of RAS lines. A  
· Power  
3.56 Watt Max Active (70 nS)  
3.124 Watt Max Active (80 nS)  
88 mW Max Standby  
4.00 Watt Max Active (60nS)  
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.  
· Available in leadless SIM or leaded Zip versions  
· Downward compatible with AK532256  
FEATURES  
· Upward compatible with AK5321024, AK5322048, AK5324096  
· 524,288 x 32 bit organization  
and AK5328192  
· 72 pin Single In-Line Module  
· Multiple CAS and RAS lines allow x16 or x32 bit widths  
· CAS-before-RAS Refresh, RAS-only Refresh or Hidden refresh  
· Operating free air temperature 0oC to 70oC  
· Single 5 Volt Power Supply  
ADDITIONAL OPTIONS AVAILABLE  
· 256K x 32 version, AK532256  
· 1 Meg x 32 version, AK5321024  
· 2 Meg x 32 version, AK5322048  
· 4 Meg x 32 version, AK5324096  
· 8 Meg x 32 version, AK5328192  
· 512 Refresh Cycles, 8mSEC  
· Available in Fast Page Mode and EDO  
PIN NOMENCLATURE  
PIN ASSIGNMENT  
A0 - A8  
Address Inputs  
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  
DQ12  
DQ28  
DQ13  
DQ29  
Vcc  
DQ1 - DQ32  
CAS0 - CAS3  
RAS0 - RAS3  
WE  
Data In/Data Out  
Column Address Strobe  
Row Address Strobe  
Write Enable  
2
D1  
DQ5  
DQ21  
DQ6  
DQ22  
DQ7  
DQ23  
DQ8  
DQ24  
A7  
NC  
3
DQ17  
DQ2  
DQ18  
DQ3  
DQ19  
DQ4  
DQ20  
Vcc  
Vss  
4
CAS0  
CAS2  
CAS3  
CAS1  
RAS0  
RAS1  
NC  
5
6
DQ30  
DQ14  
DQ31  
DQ15  
DQ32  
DQ16  
NC  
7
8
PD1 - PD4  
Vcc  
Presence Detect  
5v Supply  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
NC  
NC  
WE  
Vss  
Ground  
A0  
Vcc  
NC  
A1  
A8  
DQ9  
PD1  
NC  
No Connect  
A2  
NC  
DQ25  
DQ10  
DQ26  
DQ11  
DQ27  
PD2  
A3  
RAS3  
RAS2  
NC  
PD3  
A4  
PD4  
MODULE OPTIONS  
A5  
NC  
A6  
NC  
Vss  
Leadless SIM: AK532512W  
Leaded ZIP: AK532512Z  
Presence Detect -  
-60  
-70  
-80  
PD1  
PD2  
PD3  
PD4  
NC  
Vss  
NC  
NC  
NC  
Vss  
Vss  
NC  
NC  
Vss  
NC  
Vss  

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