Datasheet > 存储 > SRAM> CY7C1517V18-278BZXC

CY7C1517V18-278BZXC

更新时间： 2024-11-24 05:19:47

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		静态存储器双倍数据速率
页数	文件大小	规格书
28页	463K
描述
72-Mbit DDR-II SRAM 4-Word Burst Architecture

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CY7C1517V18

CY7C1528V18

CY7C1519V18

CY7C1521V18

72-Mbit DDR-II SRAM 4-Word Burst

Architecture

Features

Functional Description

• 72-Mbit density (8M x 8, 8M x 9, 4M x 18, 2M x 36)

• 300-MHz clock for high bandwidth

The CY7C1517V18, CY7C1528V18, CY7C1519V18 and

CY7C1521V18 are 1.8V Synchronous Pipelined SRAM

equipped with DDR-II (Double Data Rate) architecture. The

DDR-II consists of an SRAM core with advanced synchronous

peripheral circuitry and a two-bit burst counter. Addresses for

Read and Write are latched on alternate rising edges of the

input (K) clock. Write data is registered on the rising edges of

both K and K. Read data is driven on the rising edges of C and

C if provided, or on the rising edge of K and K if C/C are not

provided. Each address location is associated with four 8-bit

words in the case of CY7C1517V18 and four 9-bit words in the

case of CY7C1528V18 that burst sequentially into or out of the

device. The burst counter always starts with “00” internally in

the case of CY7C1517V18 and CY7C1528V18. On

CY7C1519V18 and CY7C1521V18, the burst counter takes in

the last two significant bits of the external address and bursts

four 18-bit words in the case of CY7C1519V18, and four 36-bit

words in the case of CY7C1521V18, sequentially into or out of

the device.

• 4-Word burst for reducing address bus frequency

• Double Data Rate (DDR) interfaces

(data transferred at 600 MHz) @ 300 MHz

• Two input clocks (K and K) for precise DDR timing

— SRAM uses rising edges only

• Two input clocks for output data (C and C) to minimize

clock-skew and flight-time mismatches

• Echo clocks (CQ and CQ) simplify data capture in

high-speed systems

• Synchronous internally self-timed writes

• 1.8V core power supply with HSTL inputs and outputs

• Variable drive HSTL output buffers

• Expanded HSTL output voltage (1.4V–V_DD

)

Asynchronous inputs include output impedance matching

input (ZQ). Synchronous data outputs (Q, sharing the same

physical pins as the data inputs, D) are tightly matched to the

two output echo clocks CQ/CQ, eliminating the need for

separately capturing data from each individual DDR-II SRAM

in the system design.Output data clocks (C/C) enable

maximum system clocking and data synchronization flexibility.

• Available in 165-ball FBGA package (15 x 17 x 1.4 mm)

• Offered in lead-free and non lead-free packages

• JTAG 1149.1 compatible test access port

• Delay Lock Loop (DLL) for accurate data placement

Configurations

All Synchronous Input Pass through input registers controlled

CY7C1517V18 – 8M x 8

CY7C1528V18 – 8M x 9

CY7C1519V18 – 4M x 18

CY7C1521V18 – 2M x 36

All data outputs pass through output

registers controlled by the C or C (or K or K in a single clock

by the K or K input clocks.

domain) input clocks Writes are conducted with on-chip

synchronous self-timed write circuitry.

Selection Guide

300 MHz

300

278 MHz

250 MHz

250

200 MHz

200

167 MHz

167

Unit

MHz

Maximum Operating Frequency

Maximum Operating Current

278

900

950

850

750

700

Cypress Semiconductor Corporation

Document #: 38-05565 Rev. *E

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised September 25, 2006

12 3 4 5 6 7...28

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与CY7C1517V18-278BZXC相关器件

型号	品牌	获取价格	描述	数据表
CY7C1517V18-278BZXI	CYPRESS	获取价格	72-Mbit DDR-II SRAM 4-Word Burst Architecture
CY7C1517V18-300BZC	CYPRESS	获取价格	72-Mbit DDR-II SRAM 4-Word Burst Architecture
CY7C1517V18-300BZI	CYPRESS	获取价格	72-Mbit DDR-II SRAM 4-Word Burst Architecture
CY7C1517V18-300BZXC	CYPRESS	获取价格	72-Mbit DDR-II SRAM 4-Word Burst Architecture
CY7C1517V18-300BZXI	CYPRESS	获取价格	72-Mbit DDR-II SRAM 4-Word Burst Architecture
CY7C1518AV18	CYPRESS	获取价格	72-Mbit DDR-II SRAM 2-Word Burst Architecture
CY7C1518AV18_11	CYPRESS	获取价格	72-Mbit DDR-II SRAM Two-Word Burst Architecture
CY7C1518AV18-167BZC	CYPRESS	获取价格	72-Mbit DDR-II SRAM 2-Word Burst Architecture
CY7C1518AV18-167BZI	CYPRESS	获取价格	72-Mbit DDR-II SRAM 2-Word Burst Architecture
CY7C1518AV18-167BZXC	CYPRESS	获取价格	72-Mbit DDR-II SRAM 2-Word Burst Architecture

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