AK68512D1C_09 Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – Static Random Access Memory

ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK68512D1C high density memory module is a static
random access memory organized in 512K x 8 bit words. The as-
sembly consists of one medium speed 512K x 8 SRAM in a TSOP
Type 2 package. The module is supplied in a 600 mil wide, 32 pin
DIP (Dual In-Line Package) configuration. This pinout is completely
compatible with industry standard monolithic designs. These mod-
ules are intended for use in applications where limited board space
dictates compact module designs.
The operation of the AK68512D1C is identical to standard mono-
lithic 8 bit word wide SRAMs.
The AK68512D1C 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
· 524,288 x 8 bit organization
· Fast access time: 55 - 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
· Single 5 volt power supply - AK68512D1C
· Single 3.3 volt power supply - AK68512D1C/3.3
· Operating free air temperature 0⁰ to 70⁰C
AK68512D1C
524,288 x 8 Bit CMOS
Static Random Access Memory
ELECTRICAL SPECIFICATIONS
Timing diagrams and basic electrical characteristics are those of
the standard 512K x 8 SRAMs used to construct these modules.
Accutek’s module design allows the flexibility of selecting indus-
try-compatible 512K x 8 SRAMs from any of a number of semicon-
ductor manufacturers.
PIN NOMENCLATURE
DQ1 - DQ8
A0 - A18
CE
WE
Vcc
Vss
OE
Data In/Data Out
Adress Inputs
Chip Enable
Write Enable
5v Supply
Ground
Output Enable
TIMING OPTIONS
55 nSEC Access Time
70 nSEC Access Time
PIN ASSIGNMENT
A ₁₈
A ₁₆
A ₁₄
A ₁₂
A₇
A₆
A₅
A₄
A₃
A₂
A₁
A₀
DQ₁
DQ₂
DQ₃
V_SS
T op View
FUNCTIONAL DIAGRAM
V _CC
A18
A ₁₅
A16
A ₁₇
WE
A14
A12
A7
A ₁₃
A6
A₈
A5
A₉
A4
A ₁₁
A3
OE
A2
A ₁₀
A1
CE
A0
DQ₈
DQ₇
DQ1
DQ2
DQ3
DQ₆
Vss
DQ₅
DQ₄
Vcc
A15
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ8
DQ7
DQ6
DQ5
DQ4
0.22uF CAPACITOR