AK632512AW-10 - Accutek Microcircuit Corporation

DESCRIPTION

The Accutek AK632512AW SRAM Module consists of fast high per-

formance SRAMs mounted on a low height, 64 pin SIM Board. The

module utilizes four 36 pin 512K x 8 SRAMs in 400 mil SOJ pack-

ages and four decoupling capacitors mounted two on the front side

and two on the back 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 15 nSEC to

35 nSEC in CMOS or BiCMOS technology.

The Accutek module is designed to have a maximum seated height

of 0.640 inch SIM to provide for the lowest height off the board. The

module conforms to JEDEC-standard size. The Presence Detect

feature has been disabled on this 64 pin module. The customer

must jumper his board to provide density identification. The avail-

able 72 pin module has the Presence Detect feature operational.

FEATURES

·524,288 x 32 bit organization

·Similar to JEDEC standard 64 pin SIM format except that A18

replaces PD1on Pin #3

·Common I/O, single OE and WE functions with four separate

chip selects (CE)

·Fast access times from 15 nSEC

·Low height, 0.640 inch SIM maximum

·Power:

720mA Max Active (20 nSEC)

760mA Max Active (15 nSEC)

800mA Max Active (12 nSEC)

200mA Max Standby

·Presence Detect, PD0is open for identifying module density

·Downward compatible with 256K x 32 (AK632256), 128K x 32

(AK632128), 64K x 32 (AK63264) and 32K x 32 (AK63232), 64

pin SIM or ZIP designs

·Upward compatible with 1 Meg x 32 (AK6321024)

·TTL-compatible inputs and outputs

·Single +5 Volt (æ10%) power supply

·Operating free air temperature 00to 700C

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 several SRAM manufacturers.

Accutek

Microcircuit

Corporation

AK632512AW - 64 Pin Version

524,288 x 32 Bit CMOS / BiCMOS

Static Random Access Memory

132 33 64

Front View

Back View

64 33 32 1

PIN NOMENCLATURE

A0-A

18 Address Inputs

CE1-CE

4Chip Enable

DQ1-DQ

32 Data In/Data Out

OE Output Enable

PD0Presence Detect

Vcc 5v Supply

Vss Ground

WE Write Enable

MODULE OPTIONS

Leadless SIM: AK632512AW

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 A18 19 DQ13 35 A17 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 D21

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 CE2 47 A3 63 DQ32

16 A8 32 CE1 48 A10 64 Vss

PD0= Open

FUNCTIONAL DIAGRAM

A0 - A18

A0 - A168

DQ1 - DQ8

DQ9 - DQ16

DQ17 - DQ24

DQ25 - DQ32

A0 - A18 19

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

50 = 50 nS 8 = 8 nS

60 = 60 nS 10 = 10 nS

70 = 70 nS 12 = 12 nS

80 = 80 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.

0.640

MAX

3.845

3.855

0.250

0.080

TYP

0.300

MAX

0.405

0.395

0.050

TYP

0.130

0.120

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

EXAMPLES:

AK632512AW-15

512K x 32, 15 nSEC SRAM Module, SIM Configuration, 64 Pin

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.

MECHANICAL DIMENSIONS

Inches