Datasheet > 存储 > FIFO> CY7C421-20JXI

CY7C421-20JXI

更新时间： 2024-11-06 06:51:47

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		先进先出芯片
页数	文件大小	规格书
17页	607K
描述
256/512/1K/2K/4K x 9 Asynchronous FIFO

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

CY7C421-20JXI 数据手册

CY7C419/21/25/29/33256/512/1K/2K/4K

x 9 Asynchronous FIFO

CY7C419/21/25/29/33

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

Features

Functional Description

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

■ 256 x 9 (CY7C419)

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

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

600-mil wide and 300-mil wide packages. There are 256, 512,

1,024, 2,048, and 4,096 words respectively 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. This eliminates the

serial addition of propagation delays, so that throughput is not

reduced. Data is steered in a similar manner.

■ 512 x 9 (CY7C421)

■ 1K x 9 (CY7C425)

■ 2K x 9 (CY7C429)

■ 4K x 9 (CY7C433)

■ Dual-ported RAM cell

■ High speed 50 MHz read and write independent of depth and

width

The read and write operations may be asynchronous; each can

occur at a rate of 50 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.

■ Low operating power: I_CC= 35 mA

■ Empty and full flags (Half Full flag in standalone)

■ TTL compatible

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

width expansion configurations is provided. In the depth

expansion configuration, this pin provides the expansion out

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

activated.

■ Retransmit in standalone

■ Expandable in width

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

■ Pb-free packages available

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.

■ Pin compatible and functionally equivalent to IDT7200,

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

AM7202, AM7203, and AM7204

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.

Logic Block Diagram

Cypress Semiconductor Corporation

Document #: 38-06001 Rev. *C

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised December 09, 2008

[+] Feedback

12 3 4 5 6 7...17

中文翻译

下载PDF

CY7C421-20JXI 替代型号

型号	品牌	替代类型	描述	数据表
CY7C421-20PC	CYPRESS	功能相似	256/512/1K/2K/4K x 9 Asynchronous FIFO
CY7C421-20JXC	CYPRESS	功能相似	256/512/1K/2K/4K x 9 Asynchronous FIFO
CY7C421-20JC	CYPRESS	功能相似	256/512/1K/2K/4K x 9 Asynchronous FIFO

与CY7C421-20JXI相关器件

型号	品牌	获取价格	描述	数据表
CY7C421-20LC	CYPRESS	获取价格	FIFO, 512X9, 20ns, Asynchronous, CMOS, CQCC32, CERAMIC, LCC-32
CY7C421-20LMB	CYPRESS	获取价格	FIFO, 512X9, 20ns, Asynchronous, CMOS, CQCC32, CERAMIC, LCC-32
CY7C421-20PC	CYPRESS	获取价格	256/512/1K/2K/4K x 9 Asynchronous FIFO
CY7C421-20PI	CYPRESS	获取价格	FIFO, 512X9, 20ns, Asynchronous, CMOS, PDIP28, 0.300 INCH, PLASTIC, DIP-28
CY7C421-20VC	CYPRESS	获取价格	256/512/1K/2K/4K x 9 Asynchronous FIFO
CY7C421-20VCR	CYPRESS	获取价格	暂无描述
CY7C421-20VCT	CYPRESS	获取价格	FIFO, 512X9, 20ns, Asynchronous, CMOS, PDSO28, 0.300 INCH, SOJ-28
CY7C421-20VI	ETC	获取价格	x9 Asynchronous FIFO
CY7C421-20VIT	CYPRESS	获取价格	FIFO, 512X9, 20ns, Asynchronous, CMOS, PDSO28, 0.300 INCH, PLASTIC, SOJ-28
CY7C421-20VXC	CYPRESS	获取价格	256/512/1K/2K/4K x 9 Asynchronous FIFO

与CY7C421-20JXI相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

14
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

12
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

36
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

33

产品中心

服务支持

精选活动

关于我们

帮助中心

CY7C421-20JXI

CY7C421-20JXI 数据手册

CY7C421-20JXI 替代型号

与CY7C421-20JXI相关器件

与CY7C421-20JXI相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

CY7C421-20JXI

CY7C421-20JXI 数据手册

CY7C421-20JXI 替代型号

与CY7C421-20JXI相关器件

与CY7C421-20JXI相关文章

您还可以找

您在本页遇到什么问题？