Datasheet > CY7C024

CY7C024

更新时间： 2024-09-17 00:01:31

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
20页	771K
描述
4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

CY7C024 数据手册

CY7C024/0241

CY7C025/0251

4K x 16/18 and 8K x 16/18 Dual-Port

Static RAM with SEM, INT, BUSY

Features

Functional Description

• True Dual-Ported memory cells which allow

The CY7C024/0241 and CY7C025/0251 are low-power

simultaneous reads of the same memory location

• 4K x 16 organization (CY7C024)

• 4K x 18 organization (CY7C0241)

• 8K x 16 organization (CY7C025)

• 8K x 18 organization (CY7C0251)

• 0.65-micron CMOS for optimum speed/power

• High-speed access: 15 ns

CMOS 4K x 16/18 and 8K x 16/18 dual-port static RAMs. Var-

ious arbitration schemes are included on the CY7C024/0241

and CY7C025/0251 to handle situations when multiple pro-

cessors access the same piece of data. Two ports are provid-

ed, permitting independent, asynchronous access for reads

and writes to any location in memory. The CY7C024/0241 and

CY7C025/0251 can be utilized as standalone 16-/18-bit du-

al-port static RAMs or multiple devices can be combined in

order to function as a 32-/36-bit or wider master/slave du-

al-port static RAM. An M/S pin is provided for implementing

32-/36-bit or wider memory applications without the need for

separate master and slave devices or additional discrete logic.

Application areas include interprocessor/multiprocessor de-

signs, communications status buffering, and dual-port vid-

eo/graphics memory.

• Low operating power: I_CC= 150 mA (typ.)

• Fully asynchronous operation

• Automatic power-down

• Expandable data bus to 32/36 bits or more using

Master/Slave chip select when using more than one

device

• On-chip arbitration logic

• Semaphores included to permit software handshaking

between ports

Each port has independent control pins: Chip Enable (CE),

Read or Write Enable (R/W), and Output Enable (OE). Two flags

are provided on each port (BUSY and INT). BUSY signals that the

port is trying to access the same location currently being accessed by

the other port. The Interrupt Flag (INT) permits communication be-

tween ports or systems by means of a mail box. The semaphores are

used to pass a flag, or token, from one port to the other to indicate that

a shared resource is in use. The semaphore logic is comprised of

eight shared latches. Only one sidecan control the latch (semaphore)

at any time. Control of a semaphore indicates that a shared resource

is in use. An automatic power-down feature is controlled indepen-

dently on each port by a chip select (CE) pin.

• INT flag for port-to-port communication

• Separate upper-byte and lower-byte control

• Pin select for Master or Slave

• Available in 84-pin PLCC and 100-pin TQFP

The CY7C024/0241 and CY7C025/0251 are available in

84-pin PLCCs (CY7C024 and CY7C025 only) and 100-pin

Thin Quad Plastic Flatpack (TQFP).

Logic Block Diagram

R/W

[3]

15L

[3]

[2]

–

I/O –I/O

I/O

15R

I/O

CONTROL

I/O

CONTROL

[2]

I/O –I/O

I/O

[1]

BUSY

(CY7C025/0251)

12R

(CY7C025/0251)

12L

MEMORY

ARRAY

11L

ADDRESS

DECODER

ADDRESS

DECODER

11R

INTERRUPT

SEMAPHORE

ARBITRATION

R/W

SEM

7C024–1

INT

M/S

INT

Cypress Semiconductor Corporation

Document #: 38-06035 Rev. *B

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

Revised June 22, 2004

12 3 4 5 6 7...20

中文翻译

下载PDF

与CY7C024相关器件

型号	品牌	获取价格	描述	数据表
CY7C024_0411	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C024_09	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241-15AC	ROCHESTER	获取价格	4KX18 DUAL-PORT SRAM, 15ns, PQFP100, PLASTIC, TQFP-100
CY7C0241-15AC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241-15ACT	CYPRESS	获取价格	Dual-Port SRAM, 4KX18, 15ns, CMOS, PQFP100, PLASTIC, TQFP-100
CY7C0241-15AI	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241-15AXC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241-15AXI	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C0241-25AC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY

与CY7C024相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

19
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

17
SL74HC10N：高性能三输入与非门解析
2024-09-03

94
AIC1781A 电池充电控制器深度解析
2024-09-03

84

产品中心

服务支持

精选活动

关于我们

帮助中心

CY7C024

CY7C024 数据手册

与CY7C024相关器件

与CY7C024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

CY7C024

CY7C024 数据手册

与CY7C024相关器件

与CY7C024相关文章

您还可以找

您在本页遇到什么问题？