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參數資料
| 型號： | EDI8F32256C |
| 英文描述： | 256Kx32 Static RAM CMOS, High Speed Module(256Kx32高速CMOS靜態(tài)RAM模塊) |
| 中文描述： | 256Kx32的CMOS靜態(tài)RAM，高速模塊（256Kx32高速的CMOS靜態(tài)內存模塊） |
| 文件頁數： | 1/8頁 |
| 文件大小： | 132K |
| 代理商： | EDI8F32256C |
EDI8F32256C
256Kx32 SRAM Module
1
EDI8F32256C Rev. 12 9/98 ECO #10816
256Kx32 Static RAM
CMOS, High Speed Module
The EDI8F32256C is a high speed 8 megabit Static RAM
module organized as 256K words by 32 bits. This module is
constructed from eight 256Kx4 Static RAMs in SOJ packages
on an epoxy laminate (FR4) board.
Four chip enables (E-E3) are used to independently enable
the four bytes. Reading or writing can be executed on
individual bytes or any combination of multiple bytes through
proper use of selects.
The EDI8F32256C is offered in 64 pin ZIP/SIMM package
which enables eight megabits of memory to be placed in less
than 1.4 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 provides equal access
and cycle times for ease of use.
The ZIP and SIMM modules contain two pins, PD1 and PD2,
which are used to identify module memory density in applica-
tions where alternate modules can be interchanged.
Features
256Kx32 bit CMOS Static
Random Access Memory
Access Times
BiCMOS: 10 and 12ns
CMOS: 15, 20, 25, and 35ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
High Density Package with JEDEC Standard Pinouts
64 Pin ZIP, No. 85
64 Lead Angled SIMM, No. 32
64 Lead SIMM, No. 333
64 ZIP Low Profile, No. 188
Common Data Inputs and Outputs
Single +5V (±10%) Supply Operation
Pin Names
W
G
E
E1
E2
E3
DQ-DQ3
DQ8-DQ11
DQ16-DQ19
DQ24-DQ27
DQ4-DQ7
DQ12-DQ15
DQ20-DQ23
DQ28-DQ31
4
A-A17
Address Inputs
E-E3
Chip Enables
W,
Write Enables
G
Output Enable
DQ-DQ31
Common Data Input/Output
VCC
Power (+5V±10%)
VSS
Ground
VSS
PD2
DQ8
DQ9
DQ10
DQ11
A
A1
A2
DQ12
DQ13
DQ14
DQ15
VSS
A15
E1
E3
A17
G
DQ24
DQ25
DQ26
DQ27
A3
A4
A5
VCC
A6
DQ28
DQ29
DQ30
DQ31
PD1
DQ
DQ1
DQ2
DQ3
VCC
A7
A8
A9
DQ4
DQ5
DQ6
DQ7
W
A14
E
E2
A16
VSS
DQ16
DQ17
DQ18
DQ19
A10
A11
A12
A13
DQ20
DQ21
DQ22
DQ23
VSS
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
64 Pin
PD1 - VSS
PD2 - VSS
Pin Configurations and Block Diagram
Electronic Designs, Inc.
One Research Drive Westborough, MA 01581USA 508-366-5151 FAX 508-836-4850
http://www.electronic-designs.com
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