參數(shù)資料
型號(hào): CY7C1410BV18-167BZXI
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
中文描述: 4M X 8 QDR SRAM, 0.5 ns, PBGA165
封裝: 15 X 17 MM, 1.40 MM HEIGHT, LEAD FREE, MO-216, FBGA-165
文件頁數(shù): 1/26頁
文件大小: 1072K
代理商: CY7C1410BV18-167BZXI
PRELIMINARY
36-Mbit QDR-II SRAM 2-Word Burst
Architecture
CY7C1410BV18
CY7C1425BV18
CY7C1412BV18
CY7C1414BV18
Cypress Semiconductor Corporation
Document #: 001-07036 Rev. *B
198 Champion Court
San Jose
,
CA 95134-1709
408-943-2600
Revised September 20, 2006
Features
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
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
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
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
Functional Description
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.”
Depth expansion is accomplished with Port Selects for each
port. Port selects allow each port to operate independently.
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.
Selection Guide
250 MHz
250
1065
200 MHz
200
870
167 MHz
167
740
Unit
MHz
mA
Maximum Operating Frequency
Maximum Operating Current
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相關(guān)PDF資料
PDF描述
CY7C1412BV18 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
CY7C1412BV18-167BZI 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
CY7C1412BV18-167BZXI 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
CY7C1414BV18 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
CY7C1414BV18-167BZI 36-Mbit QDR-II⑩ SRAM 2-Word Burst Architecture
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