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參數(shù)資料
| 型號： | FT-70U |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 256K (32768 words 8 bits) SRAM Control Pins: OE and CE |
| 中文描述： | 256K（32768字8位）的SRAM控制引腳：OE和行政長官 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 49K |
| 代理商： | FT-70U |
Ordering number : ENN
*
6302
52600RM (OT) No. 6302-1/7
Overview
The LC35256FM and LC35256FT are asynchronous
silicon-gate CMOS SRAMs with a 32K-word by 8-bit
structure. These are full-CMOS devices with 6 transistors
per memory cell, and feature low-voltage operation, a low
operating current drain, and an ultralow standby current.
Control inputs include OE for fast memory access and CE
(chip enable) for power saving and device selection. This
makes these devices optimal for systems that require low
power or battery backup, and makes memory expansion
easy. The ultralow standby current allows these devices to
be used with capacitor backup as well.
Features
Supply voltage range: 4.5 to 5.5 V
Access time at 5 V operation:
LC35256FM, FT-55U: 55 ns (maximum)
LC35256FM, FT-70U: 70 ns (maximum)
Standby current: 3.0 μA (Ta
≤
70°C)
5.0 μA (Ta
≤
85°C)
Operating temperature: –40 to +85°C
Data retention voltage: 2.0 to 5.5 V
All I/O levels: TTL compatible
Input/output shared function pins, 3-state output pins
No clock required
Package
28-pin SOP (450 mil) plastic package: LC35256FM
28-pin TSOP (8
×
13.4 mm) plastic package: LC35256FT
Package Dimensions
unit: mm
3187A-SOP28D
unit: mm
3221-TSOP28 (Type I)
Preliminary
LC35256FM, FT-55U/70U
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
256K (32768 words
×
8 bits) SRAM
Control Pins: OE and CE
CMOS IC
1
14
15
28
1
1
8
9
18.0
0
2
1.27
0.4
0.15
SANYO: SOP28D
[LC35256FM]
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
028
22
7
21
8
1
8.1
1
1
1
0
0.2
0.125
0
SANYO: TSOP28 (Type I)
[LC35256FT]
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