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HMS1M32M8LA-55 PDF预览

HMS1M32M8LA-55

更新时间: 2024-01-02 09:37:16
品牌 Logo 应用领域
HANBIT 静态存储器
页数 文件大小 规格书
7页 71K
描述
SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V

HMS1M32M8LA-55 数据手册

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HANBit  
HMS1M32M8LA  
SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V  
HMS1M32M8LA  
Part No.  
GENERAL DESCRIPTION  
The HMS1M32M8LA is a static random access memory (SRAM) module containing 1,048,576 bits organized in a x32-bit  
configuration. The module consists of eight 512K x 8 SRAMs mounted on a 72-pin, double-sided, FR4-printed circuit board.  
The HMS1M32M8LA also support low data retention voltage for battery back-up operations with low data retention current.  
Eight chip enable inputs, (/CE0, /CE1, /CE2, /CE3, /CE4, /CE5, /CE6, /CE7) are used to enable the modules 4M bytes  
independently. Output enable(/OE) and write enable(/WE) can set the memory input and output.  
Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW. Reading is  
accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.  
For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from  
a single +5V DC power supply and all inputs and outputs are fully TTL-compatible.  
FEATURES  
w Part identification  
PIN ASSIGNMENT  
- HMS1M32M8LA : SIMM design  
PIN SYMBOL PIN  
SYMBOL  
PIN SYMBOL  
w Access times : 55ns, 70ns  
1
2
Vcc  
Vcc  
Vss  
Vss  
Vss  
Vss  
Vss  
DQ0  
DQ8  
DQ1  
DQ9  
DQ2  
DQ10  
DQ3  
DQ11  
Vcc  
A0  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
DQ13  
DQ5  
DQ14  
DQ6  
DQ15  
DQ7  
/OE  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
DQ27  
DQ19  
A3  
w High-density 4MByte design  
w High-reliability, low-power design  
w Single + 5V ±0.5V power supply  
w Low data retention voltage : 2V(min)  
w Three state output and TTL-compatible  
w FR4-PCB design  
3
4
A10  
5
A4  
6
A11  
7
A5  
8
/CE3  
A15  
A12  
w Low profile 72-Pin SIMM  
9
Vcc  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
A14  
A13  
/CE6  
/CE7  
/CE4  
/CE5  
A17  
A6  
DQ20  
DQ28  
DQ21  
DQ29  
DQ22  
DQ30  
DQ23  
DQ31  
Vss  
OPTIONS  
MARKING  
w Timing  
A16  
55ns access  
70ns access  
-55  
-70  
/CE2  
Vss  
A7  
A1  
DQ24  
DQ16  
DQ25  
DQ17  
DQ26  
DQ18  
w Packages  
72-pin SIMM  
72-pin ZIP  
A8  
M
Z
A2  
A18  
A9  
/WE  
/CE1  
/CE0  
DQ12  
DQ4  
SIMM  
TOP VIEW  
URL: www.hbe.co.kr  
1
HANBit ElectronicsCo.,Ltd.  
Rev. 1.0 (September / 2002)  

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