參數(shù)資料
型號: WED9LAPC2C16P8BC
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類: DRAM
英文描述: 4M X 32 SYNCHRONOUS DRAM, PBGA153
封裝: 14 X 22 MM, BGA-153
文件頁數(shù): 12/21頁
文件大?。?/td> 693K
代理商: WED9LAPC2C16P8BC
2
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
WED9LAPC2B16P8BC
November 2001
Rev. 1
White Electronic Designs Corp. reserves the right to change products or specications without notice.
FIGURE 2 – BLOCK DIAGRAM 4M X 32 SDRAM / 2M X 8 SDRAM
BADDR0-11
BADDR12
BADDR13
BDQM
BRASN
BCASN
BWEN
GCLK
ADDR
BA0
BA1
LDQM#
UDQM#
RAS#
CAS#
WE#
CLK
CKE
CS#
DQ0-7
DQ8-15
Bdata 0-15
Bdata 16-31
Pdata 0-7
1M x 16 x 4 SDRAM
ADDR
BA0
BA1
LDQM#
UDQM#
RAS#
CAS#
WE#
CLK
DQ0-7
DQ8-15
1M x 16 x 4 SDRAM
ADDR0-10
BA1
DQM#
RAS#
CAS#
WE#
CLK
DQ0-7
1M x 8 x 2 SDRAM
PADDR0-10
PBS
PDQM
PRASN
PCASN
PWEN
VCC
VSS
FIGURE 1 – PIN CONFIGURATION (continued)
Pin Description
Symbol
Pin Name
Description
BADDR
BRAM Address
Address Pins For The SDRAM Memory That Serves As The Buffer Memory (BRAM)
BDATA
BRAM Data
Data I/o Pins For The SDRAM Buffer Memory (BRAM)
BADDR12, BADDR13
BRAM Bank Select
Bank Address Pin For The SDRAM Buffer Memory (BRAM)
BDQM
BRAM DQM
DQM (Data Mask) Pin For The SDRAM Buffer Memory (BRAM)
BRAS
BRAM Row Address Strobe
RAS Pin For The SDRAM Buffer Memory (BRAM)
BCAS
BRAM Column Address Strobe
CAS Pin For The SDRAM Buffer Memory (BRAM)
BWE
BRAM Write Enable
Write Enable Pin For The SDRAM Buffer Memory (BRAM)
PADDR
PRAM Address
Address Pins For The SDRAM Memory That Serves As The Pointer Memory (PRAM)
PDATA
PRAM Data
Data I/o Pins For The SDRAM Pointer Memory (PRAM)
PBS
PRAM Bank Select
Bank Address Pin For The SDRAM Pointer Memory (PRAM)
PDQM
PRAM DQM
DQM (Data Mask) Pin For The SDRAM Pointer Memory (PRAM)
PRAS
PRAM Row Address Strobe
RAS Pin For The SDRAM Pointer Memory (PRAM)
PCASN
PRAM Column Address Strobe
CAS Pin For The SDRAM Pointer Memory (PRAM)
PWE
PRAM Write Enable
Write Enable Pin For The SDRAM Pointer Memory (PRAM)
GCLK
Global Clock
Common Clock Pin For Both The BRAM And PRAM Memory Arrays
VCC
Power Supply
Power Supply Pins
VSS
Ground
Ground Pins
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