Datasheet > 存储 > SRAM> CY7C1425BV18-167BZXI

CY7C1425BV18-167BZXI

更新时间： 2024-11-24 03:58:23

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		静态存储器
页数	文件大小	规格书
26页	1096K
描述
36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture

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CY7C1410BV18

CY7C1425BV18

CY7C1412BV18

CY7C1414BV18

PRELIMINARY

36-Mbit QDR-II™ SRAM 2-Word Burst

Architecture

Features

Functional Description

• Separate Independent Read and Write data ports

— Supports concurrent transactions

• 250-MHz clock for high bandwidth

• 2-Word Burst on all accesses

• Double Data Rate (DDR) interfaces on both Read and

Write ports (data transferred at 500 MHz) @ 250 MHz

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

— SRAM uses rising edges only

The CY7C1410BV18, CY7C1425BV18, CY7C1412BV18 and

CY7C1414BV18 are 1.8V Synchronous Pipelined SRAMs,

equipped with QDR™-II architecture. QDR-II architecture

consists of two separate ports to access the memory array.

The Read port has dedicated Data Outputs to support Read

operations and the Write Port has dedicated Data Inputs to

support Write operations. QDR-II architecture has separate

data inputs and data outputs to completely eliminate the need

to “turn-around” the data bus required with common I/O

devices. Access to each port is accomplished through a

common address bus. The Read address is latched on the

rising edge of the K clock and the Write address is latched on

the rising edge of the K clock. Accesses to the QDR-II Read

and Write ports are completely independent of one another. In

order to maximize data throughput, both Read and Write ports

are equipped with Double Data Rate (DDR) interfaces. Each

address location is associated with two 8-bit words

(CY7C1410BV18) or 9-bit words (CY7C1425BV18) or 18-bit

words (CY7C1412BV18) or 36-bit words (CY7C1414BV18)

that burst sequentially into or out of the device. Since data can

be transferred into and out of the device on every rising edge

of both input clocks (K and K and C and C), memory bandwidth

is maximized while simplifying system design by eliminating

bus “turn-arounds.”

• 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

• Single multiplexed address input bus latches address

inputs for both Read and Write ports

• Separate Port Selects for depth expansion

• Synchronous internally self-timed writes

• QDR-II operates with 1.5 cycle read latency when DLL

is enabled

• Operates like a QDR I device with 1 cycle read latency

in DLL off mode

Depth expansion is accomplished with Port Selects for each

port. Port selects allow each port to operate independently.

• Available in x8, x9, x18, and x36 configurations

• Full data coherency, providing most current data

• Core V_DD= 1.8V (±0.1V); I/O V_DDQ= 1.4V to V_DD

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

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

• Variable drive HSTL output buffers

All synchronous inputs pass through input registers controlled

by the K or K input clocks. All data outputs pass through output

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

domain) input clocks. Writes are conducted with on-chip

synchronous self-timed write circuitry.

• JTAG 1149.1 compatible test access port

• Delay Lock Loop (DLL) for accurate data placement

Configurations

CY7C1410BV18 – 4M x 8

CY7C1425BV18 – 4M x 9

CY7C1412BV18 – 2M x 18

CY7C1414BV18 – 1M x 36

Selection Guide

250 MHz

200 MHz

200

167 MHz

167

Unit

MHz

Maximum Operating Frequency

Maximum Operating Current

250

1065

870

740

Cypress Semiconductor Corporation

Document #: 001-07036 Rev. *B

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised September 20, 2006

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与CY7C1425BV18-167BZXI相关器件

型号	品牌	获取价格	描述	数据表
CY7C1425BV18-200BZC	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-200BZI	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-200BZXC	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-200BZXI	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-250BZC	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-250BZI	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-250BZXC	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425BV18-250BZXI	CYPRESS	获取价格	36-Mbit QDR-II SRAM 2-Word Burst Architecture
CY7C1425JV18	CYPRESS	获取价格	36-Mbit QDR⑩-II SRAM 2-Word Burst Architectur
CY7C1425JV18-250BZC	CYPRESS	获取价格	36-Mbit QDR⑩-II SRAM 2-Word Burst Architectur

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