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HMS25632Z8B-17 PDF预览

HMS25632Z8B-17

更新时间: 2024-11-11 02:58:07
品牌 Logo 应用领域
HANBIT 静态存储器
页数 文件大小 规格书
9页 233K
描述
SRAM MODULE 1Mbyte (256K x 32-Bit) , 72-Pin

HMS25632Z8B-17 数据手册

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HANBit  
HMS25632M8B/Z8B  
H A N  
SRAM MODULE 1Mbyte (256K x 32-Bit) , 72-Pin  
B I T  
HMS25632M8B, HMS25632Z8B  
Part No.  
GENERAL DESCRIPTION  
The HMS25632M8B is a high-speed static random access memory (SRAM) module containing 262,144 words  
organized in a x32-bit configuration. The module consists of eight 256K x 4 SRAMs mounted on a 72-pin, double-  
sided, FR4-printed circuit board.  
PD0 to PD3 identify the module’s density allowing interchangeable use of alternate density, industry- standard  
modules. Eight chip enable inputs, (/CE1, /CE2, /CE3 and /CE4) are used to enable the module’s 4 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.  
PIN ASSIGNMENT  
FEATURES  
Access times : 8, 10,12, 15 and 20ns  
NC  
NC  
PD2  
PD3  
Vss  
PD0  
PD1  
DQ0  
DQ8  
DQ1  
DQ9  
DQ2  
DQ10  
DQ3  
DQ11  
Vcc  
1
2
3
4
5
6
7
8
/ CE4 37  
/ CE3 38  
A17 39  
A16 40  
/ OE 41  
Vss 42  
DQ24 43  
DQ16 44  
DQ25 45  
DQ17 46  
DQ26 47  
DQ18 48  
DQ27 49  
DQ19 50  
A3 51  
A10 52  
A4 53  
A11 54  
A5 55  
A12 56  
Vcc 57  
A13 58  
A6 59  
DQ20 60  
DQ28 61  
DQ21 62  
DQ29 63  
DQ22 64  
DQ30 65  
DQ23 66  
DQ31 67  
Vss 68  
NC 69  
NC 70  
NC 71  
NC 72  
High-density 1MByte design  
High-reliability high-speed design  
Single + 5V ±0.5V power supply  
Easy memory expansion /CE and /OE functions  
All inputs and outputs are TTL-compatible  
Industry-standard pinout  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
FR4-PCB design  
Part identification  
A0  
A7  
A1  
A8  
A2  
A9  
- HMS25632M8B : 72-pin SIMM design  
- HMS25632Z8B : 72-pin ZIP design  
Pin-compatible with the HMS25632M8B  
DQ12  
DQ4  
DQ13  
DQ5  
DQ14  
DQ6  
DQ15  
DQ7  
Vss  
/ WE  
A15  
A14  
/ CE2  
/ CE1  
OPTIONS  
Timing  
MARKING  
10ns access  
12ns access  
15ns access  
20ns access  
Packages  
-10  
-12  
-15  
-20  
PD0 = Vss  
PD1 = Vss  
PD2 = Open  
PD3 = Open  
72-pin SIMM  
72-pin ZIP  
M
Z
7 2 -Pin  
TOP VIEW  
SIMM  
1
HANBit Electronics Co.,Ltd.  

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