參數(shù)資料
型號(hào)： W3H64M72E-667ES
廠商： WHITE ELECTRONIC DESIGNS CORP
元件分類： DRAM
英文描述： 64M X 72 DDR DRAM, PBGA208
封裝： 17 X 23 MM, 1 MM PITCH, PLASTIC, BGA-208
文件頁(yè)數(shù)： 26/30頁(yè)
文件大?。?/td> 999K
代理商： W3H64M72E-667ES
W3H64M72E-XSBX
5
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
December 2006
Rev. 2
ADVANCED*
White Electronic Designs Corp. reserves the right to change products or specications without notice.
TABLE – 1 BALL DESCRIPTIONS
(continued)
A0-A12
Input
Address inputs: Provide the row address for ACTIVE commands, and the column address and auto precharge bit
(A10) for READ/WRITE commands, to select one location out of the memory array in the respective bank. A10
sampled during a PRECHARGE command determines whether the PRECHARGE applies to one bank (A10 LOW,
bank selected by BA2–BA0) or all banks (A10 HIGH) The address inputs also provide the op-code during a LOAD
MODE command.
DQ0-71
I/O
Data input/output: Bidirectional data bus
UDQS, UDQS#
I/O
Data strobe for upper byte: Output with read data, input with write data for source synchronous operation. Edge-
aligned with read data, center-aligned with write data. UDQS# is only used when differential data strobe mode is
enabled via the LOAD MODE command.
LDQS, LDQS#
I/O
Data strobe for lower byte: Output with read data, input with write data for source synchronous operation. Edge-
aligned with read data, center-aligned with write data. LDQS# is only used when differential data strobe mode is
enabled via the LOAD MODE command.
VCC
Supply
Power Supply: 1.8V ±0.1V
VCCQ
Supply
DQ Power supply: 1.8V ±0.1V. Isolated on the device for improved noise immunity
VREF
Supply
SSTL_18 reference voltage.
VSS
Supply
Ground
NC
-
No connect: These balls should be left unconnected.
DNU
-
Future use; address bits A14 and A15 are reserved for future densities.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W3H64M72E-667ESC 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-667ESI 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-667ESM 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-667SB 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:64M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package
W3H64M72E-667SBC 制造商:Microsemi Corporation 功能描述:64M X 72 DDR2, 1.8V, 667MHZ, 208PBGA COMMERICAL TEMP. - Bulk
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