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HMD2M32M4E PDF预览

HMD2M32M4E

更新时间: 2024-09-17 03:42:15
品牌 Logo 应用领域
HANBIT /
页数 文件大小 规格书
7页 134K
描述
8Mbyte(2Mx32) EDO Mode, 1K Refresh 72Pin SIMM, 5V Design

HMD2M32M4E 数据手册

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HANBit  
HMD2M32M4E/4EG  
8Mbyte(2Mx32) EDO Mode, 1K Refresh 72Pin SIMM, 5V Design  
Part No. HMD2M32M4E, HMD2M32M4EG  
GENERAL DESCRIPTION  
The HMD2M32M4E is a 2M x 32bit dynamic RAM high-density memory module. The module consists of four CMOS 1M  
x 16bit DRAMs in 42-pin SOJ packages mounted on a 72-pin, double-sided, FR-4-printed circuit board. A 0.1 or 0.22uF  
decoupling capacitor is mounted on the printed circuit board for each DRAM components. The module is a single In -line  
Memory Module with edge connections and is intended for mounting in to 72 -pin edge connector sockets. All module  
components may be powered from a single 5V DC power supply and all inputs and outputs are TTL -compatible.  
FEATURES  
PIN ASSIGNMENT  
w Part Identification  
PIN SYMBOL PIN  
SYMBOL  
DQ22  
DQ7  
DQ23  
A7  
PIN SYMBOL  
HMD2M32M4E---- 1024 Cycles/16ms Ref . Solder  
HMD2M32M4EG- -1024 Cycles/16ms Ref . Gold  
w Access times : 50, 60ns  
1
2
Vss  
DQ0  
DQ16  
DQ1  
DQ17  
DQ2  
DQ18  
DQ3  
DQ19  
Vcc  
NC  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
DQ8  
DQ24  
DQ9  
3
w High-density 8MByte design  
w Single + 5V ±0.5V power supply  
w JEDEC standard pinout  
4
DQ25  
DQ10  
DQ26  
DQ11  
DQ27  
DQ12  
DQ28  
Vcc  
5
A11  
6
Vcc  
w EDO mode operation  
7
A8  
w TTL compatible inputs and outputs  
w FR4-PCB design  
8
A9  
9
/RAS3  
/RAS2  
NC  
OPTIONS  
w Timing  
MARKING  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
50ns access  
60ns access  
70ns access  
w Packages  
72-pin SIMM  
-50  
-60  
-70  
A0  
NC  
DQ29  
DQ13  
DQ30  
DQ14  
DQ31  
DQ15  
NC  
A1  
NC  
A2  
NC  
A3  
Vss  
M
A4  
/CAS0  
/CAS2  
/CAS3  
/CAS1  
/RAS0  
A5  
PERFORMANCE RANGE  
A6  
A10  
DQ4  
PD1  
Speed  
tRAC  
50ns  
60ns  
70ns  
tCAC  
15ns  
15ns  
15ns  
tRC  
90ns  
PD2  
5
6
7
21  
DQ20  
45  
/RAS1  
69  
PD3  
110ns  
130ns  
22  
23  
24  
DQ5  
DQ21  
DQ6  
46  
47  
48  
NC  
/WE  
NC  
70  
71  
72  
PD4  
NC  
PRESENCE DETECT PINS  
Vss  
Pin  
PD1  
PD2  
PD3  
PD4  
50ns  
NC  
60ns  
NC  
70ns  
NC  
NC  
Vss  
NC  
NC  
NC  
Vss  
Vss  
NC  
NC  
URL:www.hbe.co.kr  
REV.1.0 (August.2002)  
HANBit Electronics Co.,Ltd.  
6

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