MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK68512D-1C 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
package. The module is supplied in a 600 mil wide, 32 pin DIP (Dual
In-Line Package) configuration. This pinout is completely compati-
ble 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 AK68512D is identical to standard monolithic 8
bit word wide SRAMs.
The AK68512D offers the features of low power and medium speed
by using CMOS devices and makes high density mounting possible
with no surface mount technology.
ACCUTEK
AK68512D
524,288 x 8 Bit CMOS
Static Random Access Memory
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 - AK68512D-1C
·
Single 3.3 volt power supply - AK68512D-1C/3.3
·
Operating free air temperature 0
0
to 70
0
C
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
DQ
1
- DQ
8
A
0
- A
18
CE
WE
Vcc
Vss
OE
Data In/Data Out
Adress Inputs
Chip Enable
Write Enable
5v Supply
Ground
Output Enable
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
TIMING OPTIONS
55 nSEC Access Time
70 nSEC Access Time
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ1
DQ2
DQ3
Vss
0.22uF CAPACITOR
Vcc
A15
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ8
DQ7
DQ6
DQ5
DQ4
ACCUTEK [ ACCUTEK MICROCIRCUIT CORPORATION ]
