cym1441 Cypress Semiconductor Corporation., cym1441 Datasheet

cym1441

Manufacturer Part Number

cym1441

Description

256k X 8 Static Ram Module

Manufacturer

Cypress Semiconductor Corporation.

Datasheet

1.CYM1441.pdf (6 pages)

Current page: 1 of 6
Download datasheet (110Kb)

Features

Cypress Semiconductor Corporation

Document #: 38-05271 Rev. **

• High-density 2-megabit SRAM module

• High-speed CMOS SRAMs

• Low active power

• SMD technology

• Separate data I/O

• 60-pin ZIP package

• TTL-compatible inputs and outputs

• Low profile

• Small PCB footprint

Logic Block Diagram

— Access time of 20 ns

— 5.3W (max.)

— Max. height of 0.5 in.

— 1.14 sq. in.

- A

- DI

256K x 1

SRAM

256K x 1

SRAM

•

3901 North First Street

256K x 1

SRAM

Functional Description

The CYM1441 is a very high performance 2-megabit static

RAM module organized as 256K words by 8 bits. The module

is constructed using eight 256K x 1 static RAMs in SOJ pack-

ages mounted onto an epoxy laminate substrate with pins. Two

chip selects (CS

the upper and lower 4 bits of the data word. Writing to the

memory module is accomplished when the chip select (CS)

and write enable (WE) inputs are both LOW. Data on the eight

input pins (DI

specified on the address pins (A

device is accomplished by taking chip select (CS) LOW while

write enable (WE) remains inactive or HIGH. Under these con-

ditions, the contents of the memory location specified on the

address pins will appear on the appropriate data output pins

(DO

impedance state unless the module is selected and write en-

able (WE) is HIGH.Two pins (PD

module memory density in applications where alternate ver-

sions of the JEDEC-standard modules can be interchanged.

256K x 8 Static RAM Module

through DO

256K x 1

•

SRAM

San Jose

through DI

and CS

). The data output pins remain in a high-

- DO

Pin Configuration

•

(OPEN)PD

) is written into the memory location

) are used to independently enable

CA 95134

GND

and PD

through A

Revised March 15, 2002

TopView

ZIP

) are used to identify

•

CYM1441

). Reading the

408-943-2600

GND

(GND)

Related parts for cym1441

cym1441 Summary of contents

Page 1

... Document #: 38-05271 Rev. ** 256K x 8 Static RAM Module Functional Description The CYM1441 is a very high performance 2-megabit static RAM module organized as 256K words by 8 bits. The module is constructed using eight 256K x 1 static RAMs in SOJ pack- ages mounted onto an epoxy laminate substrate with pins. Two chip selects (CS the upper and lower 4 bits of the data word ...

Page 2

... Ambient Temperature +70 C Min. Max. 2.4 0.4 2.2 V 0.5 0.8 –80 +80 –50 +50 960 IL 320 - 0.2V, 160 < 0.2V IN Max ALL INPUT PULSES 3.0V 90% 10% GND < CYM1441 1441-45 45 960 320 10% Unit Unit pF pF 90% 10% < Page ...

Page 3

... OHA . IL CYM1441 1441-35 1441-45 Max. Min. Max. Min. Max ...

Page 4

... ACS 50% [ SCS PWE DATA VALID t HZWE [5, PWE DATA VALID t HZWE t HZCS IMPEDANCE DATA VALID LZWE HIGH IMPEDANCE SCS HIGH IMPEDANCE CYM1441 HIGH ICC ISB Page ...

Page 5

... Commercial 60-Pin ZIP Module Commercial 60-Pin ZIP Module Commercial 60-Pin ZIP Module Commercial 60-Pin ZIP Module PZ04 BottomView 3.440 3.460 0.250 0.100 TYP TYP CYM1441 0.330 MAX 0.500 MAX 0.008 0.014 0.050 TYP 0.100 TYP DIMENSIONS IN INCHES MIN. MAX. Page ...

Page 6

... Document Title: CYM1441 256K x 8 Static RAM Module Document Number: 38-05271 Issue REV. ECN NO. Date ** 114172 3/19/02 Document #: 38-05271 Rev. ** Orig. of Change DSG Change from Spec number: 38-M-00020 to 38-05271 CYM1441 Description of Change Page ...

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