AK632128W-10 - Accutek Microcircuit Corporation

DESCRIPTION

The Accutek AK632128 SRAM Module consists of fast high perfor-

mance SRAMs mounted on a low height, 64 pin SIM or ZIP PCB.

The module utilizes four 32 pin 128K x 8 SRAMs in 400 mil SOJ

packages and four decoupling capacitors mounted on the front side

of a printed circuit board.

The SRAMs used have common I/O functions and single output en-

able functions. Also, four separate chip select (CE) connections are

used to independently enable the four bytes. The modules can be

supplied in a variety of access time values from 7nSEC to 35nSEC

in CMOS or BiCMOS technology.

The Accutek module is designed to have a maximum seated height

of 0.620 inch SIM or 0.540 inch ZIP to provide for the lowest height

off the board. Each conforms to JEDEC-standard sizes and pin-out

configurations. Using two pins for module denisty identification,

PD0and PD1, minimizes interchangeability and design consider-

ations when changing from one module size to the other in cus-

tomer applications.

FEATURES

·131,072 x 32 bit organization

·JEDEC Standard 64 pin SIM or ZIP format

·Access times as fast as 7nSEC

·TTL compatible inputs and outputs

·Very low profile, 0.620 inch MAX seated height SIM Version

·Very low profile, 0.540 inch MAX seated height ZIP Version

·Single +5 Volt (10%) power supply

·Common I/O, single OE functions with four separate chip se-

lects (CE)

·Presence Detect PD0and PD1for identifying module density

·Downward compatible with 32K x 32 (AK63232) and 64K x 32

AK63264)

·Upward compatible with 256K x 32 (AK632256), 512K x 32

(AK632512) and 1 Meg x 32 (AK6321024)

·Operating free air temperature 00to 700C

ELECTRICAL SPECIFICATIONS

Timing diagrams and basic electrical characteristics are those of

the standard 128K x 8 SRAMs used to construct these modules.

Accutek’s module design allows the flexibility of selecting indus-

try-compatible 128K x 8 SRAMs from at least seven semiconductor

manufacturers.

Accutek

Microcircuit

Corporation

AK632128W / AK632128Z

131,072 x 32 Bit CMOS/BiCMOS

Static Random Access Memory

Top View

64-Pin SIMM

64-Pin ZIP

PIN NOMENCLATURE

A0-A

16 Address Inputs

CE1-CE

4Chip Enable

DQ1-DQ

32 Data In/Data Out

OE Output Enable

PD0-PD

1Presence Detect

Vcc 5v Supply

Vss Ground

WE Write Enable

NC No Connect

MODULE OPTIONS

Leadless SIM: AK632128W

Leaded ZIP: AK632128Z

PIN ASSIGNMENT

PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL

1 Vss 17 A2 33 CE449 A4

2 PD0 18 A9 34 CE3 50 A11

3 PD1 19 DQ13 35 NC 51 A5

4 DQ1 20 DQ5 36 A16 52 A12

5 DQ9 21 DQ14 37 OE 53 Vcc

6 DQ2 22 DQ6 38 Vss 54 A13

7 DQ10 23 DQ15 39 DQ25 55 A6

8 DQ3 24 DQ7 40 DQ17 56 DQ21

9 DQ11 25 DQ16 41 DQ26 57 DQ29

10 DQ4 26 DQ8 42 DQ18 58 DQ22

11 DQ12 27 Vss 43 DQ27 59 DQ30

12 Vcc 28 WE 44 DQ19 60 DQ23

13 A0 29 A15 45 DQ28 61 DQ31

14 A7 30 A14 46 DQ20 62 DQ24

15 A1 31 CE247A363DQ32

16 A8 32 CE1 48 A10 64 Vss

PD0= Open

PD1= Open

FUNCTIONAL DIAGRAM

A0-A16

DQ1 - DQ8

DQ9 - DQ16

DQ17 - DQ24

DQ25 - DQ32

A0-A16 17

CE1

CE2

CE3

CE4

ORDERING INFORMATION

PART NUMBER CODING INTERPRETATION

Position 12345678

1 Product

AK = Accutek Memory

2 Type

4 = Dynamic RAM

5 = CMOS Dynamic RAM

6 = Static RAM

3 Organization/Word Width

1 = by 1 16 = by 16

4 = by 4 32 = by 32

8 = by 8 36 = by 36

9 = by 9

4 Size/Bits Depth

64 = 64K 4096 = 4 MEG

256 = 256K 8192 = 8 MEG

1024 = 1 MEG 16384 = 16 MEG

5 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)

6 Special Designation

P = Page Mode

N = Nibble Mode

K = Static Column Mode

W = Write Per Bit Mode

V = Video Ram

7 Separator

- = Commercial 00Cto+70

M = Military Equivalent Screened

(-550C to +1250C)

I = Industrial Temperature Tested

(-450Cto+85

0C)

X = Burned In

8 Speed (first two significant digits)

DRAMS SRAMS

60 = 60 nS 8 = 8 nS

70 = 70 nS 10 = 10 nS

80 = 80 nS 12 = 12 nS

10 = 100 nS 15 = 15 nS

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.

3.590

3.610

0.125

0.135 0.050

TYP

0.540

MAX

0.125

0.155 C

0.200

MAX

0.100

TYP

0.100

TYP

.100 x .100

ANGLE NOTCH

0.620

MAX

3.840

3.860

0.090

0.070

0.050

TYP

0.250

0.200

MAX

0.425

0.375

.053

.047

.130

.120

135

24664

6260

Top View ZIP

ACCUTEK MICROCIRCUIT CORPORATION

BUSINESS CENTER at NEWBURYPORT

2 NEW PASTURE ROAD, SUITE 1

NEWBURYPORT, MA 01950-4054

VOICE: 978-465-6200 FAX: 978-462-3396

Email: sales@accutekmicro.com

Internet: www.accutekmicro.com

MECHANICAL DIMENSIONS

Inches

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.

EXAMPLES

AK632128W-15

128K x 32, 15 nSEC SRAM Module, SIM Configuration

AK632128Z-20

128K x 32, 20 nSEC SRAM Module, ZIP Configuration