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AK616256D_13

更新时间： 2024-09-30 12:55:59
品牌 Logo 应用领域
ACCUTEK /
页数 文件大小 规格书
2页 740K
描述
Static Ran dom Ac cess Memory

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AK616256D_13 数据手册

 浏览型号AK616256D_13的Datasheet PDF文件第2页 
AK616256D  
262,144 x 16 Bit CMOS/BiCMOS  
Static Random Access Memory  
ACCUTEK  
DESCRIPTION  
The Accutek AK616256D SRAM Module consists of four fast high  
performance SRAMs mounted on a low profile 48 pin DIP Board.  
The module utilizes four 28 pin 256K x 4 SRAMs in SOJ packages  
and four decoupling capacitors mounted on a printed circuit board.  
The SRAMs used have common I/O functions and single output en-  
able functions. Also, four separate chip select (CS) connections are  
used to independently enable the four chips. The modules can be  
supplied in a variety of access time values from 12nSEC to 45nSEC  
in CMOS or BiCMOS technology.  
The Accutek module is designed to have a maximum seated height  
of 0.230 inch to provide for the lowest height off the board. Each  
conforms to JEDEC standard sizes and pin-out configurations.  
FEATURES  
ELECTRICAL SPECIFICATIONS  
• 262,144 x 16 bit organization  
Timing diagrams and basic electrical characteristics are those of  
the standard 256K x 4 SRAMs used to construct these modules.  
Accutek's module design allows the flexibility of selecting industry-  
compatible 256K x 4 SRAMs from several semiconductor  
manufactrurers.  
• JEDEC Standardized 48 Pin DIP  
• Common I/O with four separate chip selects (CS)  
• Low height 0.230 inch DIP maximum  
• Fast access times range from 12 nSEC BiCMOS to 45nSEC  
CMOS  
• TTL-compatible inputs and outputs  
• Single 5 volt power supply - AK616256D  
• Single 3.3 volt power supply - AK616256D-3.3  
0 0  
• Operating free air temperature 0 C to 70 C  
PIN NOMENCLATURE  
PIN ASSIGNMENTA16  
A0 - A17  
CS1 - CS4  
DQ0 - DQ15  
WEL - WEU  
Vcc  
Address Inputs  
Chip Select  
Data In/Date Out  
Write Enable  
5v Supply  
PIN #  
1
SYMBOL  
GND  
NC  
PIN #  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
SYMBOL  
A9  
PIN #  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
SYMBOL  
GND  
NC  
PIN #  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
SYMBOL  
A8  
2
A10  
A7  
3
A0  
A11  
A17  
A6  
4
A1  
A12  
A16  
A5  
5
A2  
A13  
A15  
A4  
6
WEL  
CS2  
D4  
WEU  
CS4  
D12  
A14  
A3  
7
CS3  
D11  
CS1  
D3  
8
Vss  
Ground  
9
D5  
D13  
D10  
D2  
NC  
No Connect  
10  
11  
12  
D6  
D14  
D9  
D1  
D7  
D15  
D8  
D0  
GND  
Vcc  
Vcc  
Vcc  
MODULE OPTIONS  
EXAMPLES  
DIP: AK616256D  
AK616256D-12  
256K x 16, 12 nSEC SRAM Module, DIP  
AK616256D-15  
256K x 16, 15nSEC SRAM Module, DIP  
12

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