ACCUTEK AK682048D_13

AK682048D
2,097,152 x 8 Bit CMOS
Static Random Access Memory
ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK682048D high density memory module is a static
random access memory organized in 2 Meg x 8 bit words. The assembly consists of one medium speed 2 Meg x 8 SRAM in a Type 1
TSOP package. The module is supplied in a 600 mil wide, 36 pin
DIP (Dual In-Line Package) configuration. This pinout is completely
compatible with industry standard monolithic designs. These modules are intended for use in applications where limited board space
dictates compact module designs.
The operation of the AK682048D is identical to standard monolithic
8 bit word wide SRAMs.
The AK682048D offers the features of low power and medium
speed by using CMOS devices and makes high density mounting
possible with no surface mount technology.
FEATURES
• 2,097,152 x 8 bit organization
ELECTRICAL SPECIFICATIONS
• Fast access time: 45 - 70 nSEC
• Completely static RAM, no clock or timing strobe required
• Inputs and outputs TTL compatible
• Conventional 600 mil wide SIP package with industry
compatible pinout
Timing diagrams and basic electrical characteristics are those of
the standard 2048 Meg x 8 SRAMs used to construct these modules. Accutek’s module design allows the flexibility of selecting industry-compatible 2048 Meg x 8 SRAMs from any of a number of
semiconductor manufacturers.
• Single 5 volt power supply - AK682048D
• Single 3.3 volt power supply - AK682048D/3.3
• Operating free air temperature 00 to 700C
PIN NOMENCLATURE
DQ1 - DQ8
Data In/Data Out
A0 - A20
Adress Inputs
CE1
Chip Enable 1
CE2
Chip Enable 2
WE
Write Enable
Vcc
5v Supply
Vss
Ground
OE
Output Enable
TIMING OPTIONS
55 nSEC Access Time
70 nSEC Access Time
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
ORDERING INFORMATION
PART NUMBER CODING INTERPRETATION
Position
1
2
3
4
5
6
7
8
1
2
3
4
5
6
Inches
7
8
Product
AK = Accutek Memory
Type
4 = Dynamic RAM
5 = CMOS Dynamic RAM
6 = Static RAM
Organization/Word Width
1 = by 1 16 = by 16
4 = by 4 32 = by 32
8 = by 8 36 = by 36
9 = by 9
Size/Bits Depth
32 = 32K
1024 = 1 MEG
64 = 64K
4096 = 4 MEG
128 = 128K
8192 = 8 MEG
256 = 256K
16384 = 16 MEG
512 = 512K
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)
Special Designation
P = Page Mode
N = Nibble Mode
K = Static Column Mode
W = Write Per Bit Mode
V = Video Ram
Separator
- = Commercial 00C to +700C
M = Military Equivalent Screened
(-550C to +1250C)
I = Industrial Temperature Tested
(-450C to +850C)
X = Burned In
Speed (first two significant digits)
DRAMS
SRAMS
50 = 50 nS
8 =
8 nS
60 = 60 nS
12 = 12 nS
70 = 70 nS
55 = 55 nS
80 = 80 nS
70 = 70 nS
The numbers and coding on this page do not include all variations available but are show as examples of the most widely used variations.
Contact Accutek if other information is required.
EXAMPLES:
AK682048D-70
2048 x 8, 70 nSEC SRAM Module, DIP Configuration
ACCUTEK
MICROCIRCUIT CORPORATION
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 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 objectives, which are subject to change upon full
characterization over the specific operating conditions.