CY7C024-15AXC

更新时间： 2024-11-09 04:10:11

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		内存集成电路静态存储器
页数	文件大小	规格书
21页	524K
描述
4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY

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CY7C024-15AXC 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

Functional Description

Features

• True Dual-Ported memory cells which allow simulta-

The CY7C024/0241 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 utilized as standalone

16-/18-bit dual-port static RAMs or multiple devices can be

combined in order to function as a 32-/36-bit or wider master/

slave dual-port static RAM. An M/S pin is provided for imple-

menting 32-/36-bit or wider memory applications without the

need for separate master and slave devices or additional

discrete logic. Application areas include interprocessor/multi-

processor designs, communications status buffering, and

dual-port video/graphics memory.

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.

neous 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

• 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

• INT flag for port-to-port communication

• Separate upper-byte and lower-byte control

• Pin select for Master or Slave

• Available in 84-pin Lead (Pb)-free PLCC, 84-pin PLCC,

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

The CY7C024/0241 and CY7C025/0251 are available in

84-pin Lead (Pb)-free PLCCs, 84-pin PLCCs (CY7C024 and

CY7C025 only), 100-pin Lead (Pb)-free Thin Quad Plastic

Flatplack (TQFP) and 100-pin Thin Quad Plastic Flatpack.

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose, CA 95134

•

408-943-2600

Document #: 38-06035 Rev. *C

Revised November 11, 2004

12 3 4 5 6 7...21

中文翻译

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CY7C024-15AXC 替代型号

型号	品牌	替代类型	描述	数据表
CY7C024E-15AXC	CYPRESS	完全替代	4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
CY7C024AV-25AXC	CYPRESS	类似代替	3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM
CY7C024AV-20AXC	CYPRESS	类似代替	3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM

与CY7C024-15AXC相关器件

型号	品牌	获取价格	描述	数据表
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
CY7C0241AV-20AXC	CYPRESS	获取价格	Dual-Port SRAM, 4KX18, 20ns, CMOS, PQFP100, LEAD FREE, PLASTIC, TQFP-100

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