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参数资料
| 型号： | EDI8G322048C |
| 英文描述： | 2048Kx32 Static RAM CMOS, High Speed Module(2048Kx32 高速CMOS静态RAM模块) |
| 中文描述： | 2048Kx32的CMOS静态RAM，高速模块（2048Kx32高速的CMOS静态内存模块） |
| 文件页数： | 1/6页 |
| 文件大小： | 86K |
| 代理商： | EDI8G322048C |
1
EDI8G322048C Rev. 0 3/98 ECO #9722
EDI8G322048C
2048Kx32 SRAM Module
Features
Pin Configurations
2048Kx32 bit CMOS Static
Random Access Memory
Access Times: 20, 25, and 35ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
High Density Package
72 lead SIMM, No. 356 (Straight)
Common Data Inputs and Outputs
Single +5V (±10%) Supply Operation
The EDI8G322048C is a high speed 64 megabit Static
RAM module organized as 2048K words by 32 bits. This
module is constructed from sixteen 1024Kx4 Static
RAMs in SOJ packages on an epoxy laminate (FR4)
board.
Four chip enables (E-E3) and the highest order ad-
dress line are used to independently enable the four
bytes as well as the low or high block of addressable
memory space. Reading or writing can be executed on
individual bytes or any combination of multiple bytes
through proper use of selects.
The EDI8F321024C is offered in a 72 lead SIMM pack-
age, which enables 64 megabits of memory to be placed
in less than 1.3 square inches of board space.
All inputs and outputs are TTL compatible and operate
from a single 5V supply. Fully asynchronous circuitry
requires no clocks or refreshing for operation and pro-
vides equal access and cycle times for ease of use.
Pins PD1- PD4, are used to identify module memory
density in applications where alternate modules can be
interchanged.
Electronic Designs Incorporated
One Research Drive Westborough, MA 01581USA 508-366-5151 FAX 508-836-4850
Electronic Designs Europe Ltd. Shelley House, The Avenue Lightwater, Surrey GU18 5RF
United Kingdom 01276 472637 FAX: 01276 473748
Pin Names
A-A20
Address Inputs
E-E3
Chip Enables
W
Write Enable
G
Output Enable
DQ-DQ31
Common Data
Input/Output
VCC
Power (+5V±10%)
VSS
Ground
NC
No Connection
2048Kx32 Static RAM
CMOS, High Speed Module
32
10
20
21
22
23
24
25
26
27
28
29
30
31
33
34
35
36
NC
PD3
PD4
VSS
PD1
PD2
DQ0
DQ8
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
VCC
A0
A7
A1
A8
A2
A9
DQ12
DQ4
DQ5
DQ6
DQ7
DQ13
DQ14
DQ15
VSS
W\
A15
A14
E2\
E1\
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
64
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
65
66
67
68
69
70
71
72
E4\
E3\
A17
A16
VSS
DQ16
DQ17
DQ18
DQ19
A10
A11
A12
G\
DQ24
DQ25
DQ26
DQ27
A3
A4
A5
VCC
A6
DQ28
DQ29
DQ30
DQ31
A18
A20
A13
DQ20
DQ21
DQ22
DQ23
VSS
A19
NC
PD1,PD4 = NC
PD2,PD3 = VSS
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