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WEDPN16M64VR-125BC PDF预览

WEDPN16M64VR-125BC

更新时间: 2023-02-26 15:27:22
品牌 Logo 应用领域
美高森美 - MICROSEMI 动态存储器
页数 文件大小 规格书
13页 423K
描述
Synchronous DRAM Module, 16MX64, 5.8ns, CMOS, PBGA219, 32 X 25 MM, PLASTIC, BGA-219

WEDPN16M64VR-125BC 数据手册

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WEDPN16M64VR-XBX  
16MX64REGISTEREDSYNCHRONOUSDRAM  
FEATURES  
GENERAL DESCRIPTION  
! Registered for enhanced performace of bus speeds  
The 128MByte (1Gb) SDRAMis a high-speed CMOS, dynamic  
random-access,memoryusing4 chipscontaining268,435,456  
bits. Each chip is internally configured as a quad-bank DRAM  
with a synchronous interface. Each of the chips 67,108,864-  
bit banks is organized as 8,192 rows by 512 columns by 16  
bits. The MCP also incorporates two 16-bit universal bus  
drivers for input control signals and addresses.  
• 66, 100, 125, 133** MHz  
! Package:  
• 219 Plastic Ball Grid Array (PBGA), 32 x 25mm  
! Single 3.3V ± 0.3V power supply  
! Fully Synchronous; all signals registered on positive edge  
Read and write accesses to the SDRAM are burst oriented;  
accesses start at a selected location and continue for a  
programmed number of locations in a programmed se-  
quence. Accesses begin with the registration of an ACTIVE  
command, which is then followed by a READ or WRITE  
command. The address bits registered coincident with the  
ACTIVE command are used to select the bank and row to be  
accessed (BA0, BA1 select the bank; A0-12 select the row).  
The address bits registered coincident with the READ or  
WRITE command are used to select the starting column  
location for the burst access.  
of system clock cycle  
! Internal pipelined operation; column address can be  
changed every clock cycle  
! Internal banks for hiding row access/precharge  
! Programmable Burst length 1,2,4,8 or full page  
! 8,192 refresh cycles  
! Commercial, Industrial and Military Temperature Ranges  
! Organized as 16M x 64  
User configureable as 32M x 32  
The SDRAM provides for programmable READ or WRITE burst  
lengths of 1, 2, 4 or 8 locations, or the full page, with a burst  
terminate option. An AUTO PRECHARGE function may be  
enabled to provide a self-timed row precharge thatisinitiated  
at the end of the burst sequence.  
! Weight: WEDPN16M64VR-XBX - 2.5 grams typ ical  
BENEFITS  
! 37% SPACE SAVINGS  
The 1Gb SDRAM uses an internal pipelined architecture to  
achieve high-speed operation. This architecture is compat-  
ible with the 2n rule of prefetch architectures, but it also  
allows the column address to be changed on every clock  
cycle to achieve ahigh-speed,fullyrandomaccess.Precharging  
one bank while accessing one of the other three banks will  
hide the precharge cycles and provide seamless, high-  
speed, random-access operation.  
! 17% I/O Reduction  
! Reduced part count  
! Reduced trace lengths for lower parasitic capacitance  
! Glue-less connection to memory controller/PCI Bridge  
! Suitable for hi-reliability applications  
! Laminate interposer for optimum TCE match  
! Upgradeable to 32M x 64 density (contact factory for  
The 1Gb SDRAM is designed to operate in 3.3V, low-power  
memory systems. An auto refresh mode is provided, along  
with a power-saving, power-down mode.  
information)  
*This data sheet describes a product that is subject to change without notice.  
**Available in commercial and industrial temperatures only.  
All inputs and outputs are LVTTL compatible. SDRAMs offer  
substantial advances in DRAM operating performance, in-  
cluding the ability to synchronously burst data at a high data  
rate with automatic column-address generation, the ability to  
interleave between internal banks in order to hide precharge  
time and the capability to randomly change column ad-  
dresses on each clock cycle during a burst access.  
November 2003 Rev. 4  
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com  

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