CY7C421-40JC Cypress Semiconductor Corp, CY7C421-40JC Datasheet

CY7C421-40JC

Manufacturer Part Number

CY7C421-40JC

Description

Manufacturer

Cypress Semiconductor Corp

Datasheets

1.CY7C421-40JC.pdf (25 pages)

2.CY7C421-40JC.pdf (25 pages)

3.CY7C421-40JC.pdf (21 pages)

4.CY7C421-40JC.pdf (22 pages)

Specifications of CY7C421-40JC

Density

4Kb

Word Size

Sync/async

Asynchronous

Expandable

Yes

Package Type

LCC

Operating Supply Voltage (typ)

Operating Supply Voltage (min)

4.5V

Operating Supply Voltage (max)

5.5V

Operating Temp Range

0C to 70C

Operating Temperature Classification

Commercial

Mounting

Surface Mount

Pin Count

Lead Free Status / Rohs Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CY7C421-40JC

Quantity:

5 510

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CY7C421-40JC

Quantity:

5 510

Company:

BOSTOCK HK LIMITED

Part Number:

CY7C421-40JC

Manufacturer:

CYP

Quantity:

1 656

Company:

BOSTOCK HK LIMITED

Part Number:

CY7C421-40JC

Manufacturer:

Quantity:

1 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

CY7C421-40JC

Manufacturer:

CYPRESS/赛普拉斯

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CY7C421-40JC/-20C

Manufacturer:

CYP

Quantity:

5 510

Current page: 1 of 25
Download datasheet (517Kb)

Cypress Semiconductor Corporation

Document #: 38-06001 Rev. *B

Features

Functional Description

The CY7C419, CY7C420/1, CY7C424/5, CY7C428/9, and

CY7C432/3 are first-in first-out (FIFO) memories offered in

CY7C419/21/25/29/33256/512/1K/2K/4K x 9 Asynchronous FIFO

• Asynchronous first-in first-out (FIFO) buffer memories

• 256 x 9 (CY7C419)

• 512 x 9 (CY7C421)

• 1K x 9 (CY7C425)

• 2K x 9 (CY7C429)

• 4K x 9 (CY7C433)

• Dual-ported RAM cell

• High-speed 50.0-MHz read/write independent of

• Low operating power: I

• Empty and Full flags (Half Full flag in standalone)

• TTL compatible

• Retransmit in standalone

• Expandable in width

• PLCC, 7x7 TQFP, SOJ, 300-mil and 600-mil DIP

• Pb-Free Packages Available

• Pin compatible and functionally equivalent to IDT7200,

depth/width

IDT7201, IDT7202, IDT7203, IDT7204, AM7200, AM7201,

AM7202, AM7203, and AM7204

= 35 mA

256/512/1K/2K/4K x 9 Asynchronous FIFO

•

3901 North First Street

600-mil wide and 300-mil wide packages. They are, respec-

tively, 256, 512, 1,024, 2,048, and 4,096 words by 9-bits wide.

Each FIFO memory is organized such that the data is read in

the same sequential order that it was written. Full and Empty

flags are provided to prevent overrun and underrun. Three

additional pins are also provided to facilitate unlimited

expansion in width, depth, or both. The depth expansion

technique steers the control signals from one device to

another in parallel, thus eliminating the serial addition of

propagation delays, so that throughput is not reduced. Data is

steered in a similar manner.

The read and write operations may be asynchronous; each

can occur at a rate of 50.0 MHz. The write operation occurs

when the write (W) signal is LOW. Read occurs when read (R)

goes LOW. The nine data outputs go to the high-impedance

state when R is HIGH.

A Half Full (HF) output flag is provided that is valid in the

standalone and width expansion configurations. In the depth

expansion configuration, this pin provides the expansion out

(XO) information that is used to tell the next FIFO that it will be

activated.

In the standalone and width expansion configurations, a LOW

on the retransmit (RT) input causes the FIFOs to retransmit

the data. Read enable (R) and write enable (W) must both be

HIGH during retransmit, and then R is used to access the data.

The CY7C419, CY7C420, CY7C421, CY7C424, CY7C425,

CY7C428, CY7C429, CY7C432, and CY7C433 are fabricated

using an advanced 0.65-micron P-well CMOS technology.

Input ESD protection is greater than 2000V and latch-up is

prevented by careful layout and guard rings.

•

San Jose

CA 95134

CY7C419/21/25/29/33

Revised June 30, 2005

•

408-943-2600

[+] Feedback

Related parts for CY7C421-40JC

Related keywords

CY7C421-40JC datasheet
CY7C421-40JC data sheet
CY7C421-40JC pdf datasheet
CY7C421-40JC component
CY7C421-40JC part
CY7C421-40JC distributor
CY7C421-40JC RoHS
CY7C421-40JC datasheet download