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AK5322048BW_09 PDF预览

AK5322048BW_09

更新时间: 2024-09-25 12:48:47
品牌 Logo 应用领域
ACCUTEK 存储
页数 文件大小 规格书
2页 72K
描述
Dynamic Random Access Memory

AK5322048BW_09 数据手册

 浏览型号AK5322048BW_09的Datasheet PDF文件第2页 
AK5322048BW  
2,097,152 Word by 32 Bit CMOS  
Dynamic Random Access Memory  
ACCUTEK  
MICROCIRCUIT CORPORATION  
DESCRIPTION  
The Accutek AK5322048BW high density memory module is a  
CMOS dynamic RAM organized in 2048K x 32 bit words. The mod-  
ule consists of four standard 1 Meg x 16 bits DRAMs in plastic SOJ  
packages. The assembly has two 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 AK5322048BW is identical to sixteen 1 Meg x 4  
DRAMs. There are four CAS lines and two RAS lines. On each  
bank of 1M x 32, independent byte control is accomplished by four  
CAS lines. Each seperate CAS line controls one byte of the 1 Meg x  
16 DRAM.  
· Power:  
3.96 Watt Max Active (50nS)  
3.52 Watt Max Active (60 nS)  
3.08 Watt Max Active (70 nS)  
44 mW Max Standby  
FEATURES  
· 2,097,152 x 32 bit organization  
· 72 pad Single In-Line Module  
· Downward compatible with AK5321024W, AK532512W and  
AK532256W  
· CAS-before-RAS, RAS-only or hidden refresh  
· Operating free air temperature 0oC to 70oC  
· Single 5 Volt Power Supply  
· Upward compatible with AK5324096W and AK5328192W  
ADDITIONAL OPTIONS AVAILABLE  
1 Meg x 32 version, AK5321024BW  
1 Meg x 36 version, AK5361024BW  
2 Meg x 36 version, AK5362048BW  
· 1024 Refresh Cycles, 16 mSEC  
· Available in Fast Page Mode or EDO  
PIN NOMENCLATURE  
PIN ASSIGNMENT  
A0 - A9  
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  
DQ11  
DQ27  
DQ12  
DQ28  
Vcc  
DQ0 - DQ35  
WE  
Data In/Data Out  
Write Enable  
2
DQ0  
DQ16  
DQ1  
DQ17  
DQ2  
DQ18  
DQ3  
DQ19  
Vcc  
DQ4  
DQ20  
DQ5  
DQ21  
DQ6  
DQ22  
DQ7  
DQ23  
A7  
NC  
3
Vss  
4
CAS0  
CAS2  
CAS3  
CAS1  
RAS0  
RAS1  
NC  
RAS0 - RAS3  
CAS0 - CAS3  
PD1 - PD4  
Vss  
Row Address Strobe  
Column Address Strobe  
Presence Detect  
Ground  
5
6
DQ29  
DQ13  
DQ30  
DQ14  
DQ31  
DQ15  
NC  
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
NC  
NC  
WE  
Vcc  
5v Supply  
A0  
Vcc  
NC  
A1  
A8  
DQ8  
PD1  
NC  
No Connect  
A2  
A9  
DQ24  
DQ9  
PD1  
A3  
RAS3  
RAS2  
NC  
PD3  
A4  
DQ25  
DQ10  
DQ26  
PD4  
MODULE OPTIONS  
A5  
NC  
A6  
NC  
Vss  
Leadless SIM: AK5322048BW  
Presence Detect  
-50  
-60  
-70  
PD1  
PD2  
PD3  
PD4  
NC  
VC  
NC  
NC  
NC  
NC  
NC  
NC  
Vss  
NC  
Vss  
Vss  

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