AK616256D_13 [ACCUTEK]
Static Ran dom Ac cess Memory; 冉静DOM交流塞斯记忆
| 型号： | AK616256D_13 |
| 厂家： | 
ACCUTEK MICROCIRCUIT CORPORATION |
| 描述： | Static Ran dom Ac cess Memory |
| 文件： | 总2页 (文件大小：740K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
+0.025"
-0.025"
2.400"
+0.010"
-0.010"
0.900"
PIN#1
MAX
0.230"
+0.010"
-0.010"
0.160"
+0.005"
-0.005"
+0.001"
-0.001"
0.100"
0.020"
1
2 3 4 5 6 7 8
Position
ORDER INFORMATION
5
6
7
Package Type
G = Single In-Line Package (SIP)
S = Single In-Line Module (SIM)
D = Dual In-Line Package (DIP)
W = .050 inch Pitch Edge Connect
Z = Zig-Zag In-Line Package (ZIP)
PART NUMBER CODING INTERPRETATION
1
2
3
4
5
6
7 8
Position
1
Product
AK
=
Accutek Memory
2
Type
Special Designation
4
5
6
= Dynamic RAM
= CMOS Dynamic RAM
= Static RAM
P = Page Mode
N = Nibble Mode
K = Static Column Mode
W = Write Per Bit Mode
V = Video Ram
3
Organization/Word Width
1 = b y 1 16 = by 16
4 = by 4 32 = by 32
8 = by 8 36 = by 36
9 = by 9
Separator
0 0
= Commercial 0 C to +70 C
-
M = Military Equivalent Screened
0 0
(-55 C to +125 C)
4
Size/Bits Depth
I
= Industrial Temperature Tested
64
256
1024 = 1 MEG
=
64K
4096
8192
=
=
=
4 MEG
8 MEG
16 MEG
0 0
(-45 C to +85 C)
=
256K
X = Burned In
16384
8
Speed (first two significant digits)
DRAMS SRAMS
The numbers and coding on this page do not include all variations
available, but are shown as examples of the most widely used
variations. Contact Accutek if other information is required.
50
60
70
=
=
=
50 nS
60 nS
70 nS
8
12
15
=
=
=
8 nS
12 nS
15 nS
Accutek reserves the right to make changes in specifications at any time and
without notice. Accutek does not assume any responsibility for the use of
any circuitry described; no circuit patent licenses are implied. Preliminary
data sheets contain minimum and maximum limits based upon design ob-
jectives, which are subject to change upon full characterization over the spe-
cific operating conditions.
5 NEW PASTURE ROAD
NEWBURYPORT, MA 01950-4040
PHONE: 978-465-6200 FAX: 978-462-3396
Email: sales@accutekmicro.com
Internet: www.accutekmicro.com
ACCUTEK
MICROCIRCUIT CORPORATION
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