CY7C024-15ACT

更新时间： 2024-11-09 13:00:31

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
21页	518K
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CY7C024-15ACT 数据手册

CY7C024/024A/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 simultaneous

The CY7C024/024A/0241 and CY7C025/0251 are low power

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

arbitration schemes are included on the CY7C024/ 0241 and

CY7C025/0251 to handle situations when multiple processors

access the same piece of data. Two ports are provided,

permitting independent, asynchronous access for reads and

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

CY7C025/0251 can be used as standalone 16 or 18-bit dual-port

static RAMs or multiple devices can be combined to function as

a 32-/36-bit or wider master/ slave dual-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 designs, communications status

buffering, and dual-port video/graphics memory.

reads of the same memory location

4K x 16 organization (CY7C024/024A^[1]

4K x 18 organization (CY7C0241)

8K x 16 organization (CY7C025)

8K x 18 organization (CY7C0251)

■

)

0.65 micron CMOS for optimum speed and power

High speed access: 15 ns

Low operating power: I_CC= 150 mA (typ)

Fully asynchronous operation

Automatic power down

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 between 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

side can 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 independently on

each port by a chip select (CE) pin.

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

■

INT flag for port-to-port communication

Separate upper-byte and lower-byte control

Pin select for Master or Slave

Available in 84-pin (Pb-free) PLCC, 84-pin PLCC, 100-pin

(Pb-free) TQFP, and 100-pin TQFP

The CY7C024/024A/0241 and CY7C025/0251 are available in

84-pin Pb-free PLCCs, 84-pin PLCCs (CY7C024 and CY7C025

only), 100-pin Pb-free Thin Quad Plastic Flatplack (TQFP), and

100-pin Thin Quad Plastic Flatpack.

Note

1. CY7C024 and CY7C024A are functionally identical.

Cypress Semiconductor Corporation

Document #: 38-06035 Rev. *D

•

198 Champion Court

•

San Jose

CA 95134-1709

•

408-943-2600

Revised December 09, 2008

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与CY7C024-15ACT相关器件

型号	品牌	获取价格	描述	数据表
CY7C024-15AXC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C024-15JC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C024-15JCR	CYPRESS	获取价格	Multi-Port SRAM, 4KX16, 15ns, CMOS, PQCC84, PLASTIC, LCC-84
CY7C024-15JXC	CYPRESS	获取价格	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C024-15JXC	ROCHESTER	获取价格	4KX16 DUAL-PORT SRAM, 15ns, PQCC84, LEAD FREE, PLASTIC, LCC-84
CY7C024-15JXCT	CYPRESS	获取价格	Dual-Port SRAM, 4KX16, 15ns, CMOS, PQCC84, LEAD FREE, PLASTIC, LCC-84
CY7C0241AV	CYPRESS	获取价格	3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM
CY7C0241AV-15AC	CYPRESS	获取价格	Dual-Port SRAM, 4KX18, 15ns, CMOS, PQFP100, PLASTIC, TQFP-100
CY7C0241AV-20AC	CYPRESS	获取价格	3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM
CY7C0241AV-20ACT	CYPRESS	获取价格	Dual-Port SRAM, 4KX18, 20ns, CMOS, PQFP100, PLASTIC, TQFP-100

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