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參數資料
| 型號： | EDI88257LPA45CI |
| 元件分類： | SRAM |
| 英文描述： | 256K X 8 STANDARD SRAM, 45 ns, CDIP32 |
| 封裝： | 0.600 INCH, SIDE BRAZED, CERAMIC, DIP-32 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 121K |
| 代理商： | EDI88257LPA45CI |
1
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
HI-RELIABILITY PRODUCT
EDI88257CA
256Kx8 Monolithic SRAM
FEATURES
I
Access Times of 20, 25, 35, 45, 55ns
I
Data Retention Function (LPA Versions)
I
TTL Compatible Inputs and Outputs
I
Fully Static, No Clocks
I
Organized as 256Kx8
I
Commercial, Industrial and Military Temperature Ranges
I
JEDEC Approved Evolutionary Pinout
32 pin Ceramc DIP, 0.6 mls wide (Package 9)
I
Single +5V (
±
10%) Supply Operation
May 2000 Rev. 2
PIN DESCRIPTION
I/O
0-7
Data Inputs/Outputs
A
0-17
Address Inputs
WE
Write Enable
CS
Chip Selects
OE
Output Enable
V
CC
Power (+5V
±
10%)
V
SS
Ground
NC
Not Connected
BLOCK DIAGRAM
FIG. 1
PIN CONFIGURATION
The EDI88257CA is a 2 Megabit 256Kx8 bit Monolithic CMOS
Static RAM.
The 32 pin DIP pinout adheres to the JEDEC evolutionary standard
for the two megabit device. The device is upgradeable to the
512Kx8 SRAM, the EDI88512CA. Pin 1 becomes the higher order
address.
A Low Power version, EDI88257LPA, offers a data retention
function for battery back-up opperation. Military product is avail-
able compliant to Appendix A of MIL-PRF-38535.
32 DIP
TOP VIEW
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
CC
A15
A17
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
NC
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A
I/O
I/O1
I/O2
V
SS
Memory Array
Address
Buffer
Address
Decoder
I/O
Circuits
A
-17
I/O
-7
WE
CS
OE
相關PDF資料 |
PDF描述 |
|---|---|
| EDI88257LPA55CM | 256K X 8 STANDARD SRAM, 55 ns, CDIP32 |
| EDI8C32128LP35JM | 512K X 8 MULTI DEVICE SRAM MODULE, 35 ns, CQCC68 |
| EDI8F1664CA30M6C | 128K X 8 MULTI DEVICE SRAM MODULE, 30 ns, DMA40 |
| EDI8L24128C17AI | 128K X 24 MULTI DEVICE SRAM MODULE, 17 ns, PQCC68 |
| EDI8L32256V17AC | 512K X 16 MULTI DEVICE SRAM MODULE, 17 ns, PQCC68 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| EDI88257LPAXCB | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256Kx8 Monolithic SRAM |
| EDI88257LPAXCC | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256Kx8 Monolithic SRAM |
| EDI88257LPAXCI | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256Kx8 Monolithic SRAM |
| EDI88257LPAXCM | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256Kx8 Monolithic SRAM |
| EDI88257LPXCB | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256Kx8 Monolithic SRAM |
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