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AK532512W PDF预览

AK532512W

更新时间: 2024-01-14 03:37:27
品牌 Logo 应用领域
ACCUTEK 存储
页数 文件大小 规格书
2页 67K
描述
262,144 Word by 32 Bit CMOS Dynamic Random Access Memory

AK532512W 数据手册

 浏览型号AK532512W的Datasheet PDF文件第2页 
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  

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