參數(shù)資料
型號: W972GG8JB-25
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 256M X 8 DDR DRAM, 0.4 ns, PBGA60
封裝: 11 X 11.50 MM, ROHS COMPLIANT, WBGA-60
文件頁數(shù): 11/86頁
文件大?。?/td> 1466K
代理商: W972GG8JB-25
W972GG8JB
Publication Release Date: Feb. 18, 2011
- 19 -
Revision A02
CMD
CLK
ODT
Rtt
Updating
New setting
tIS
tMOD,min
tMOD,max
tAOFD
EMRS
NOP
Old setting
1) EMRS command directed to EMR(1), which updates the information in EMR(1)[A6,A2], i.e. Rtt (Nominal).
2) "setting" in this diagram is the Register and I/O setting, not what is measured from outside.
Figure 10
– ODT update delay timing - tMOD
However, to prevent any impedance glitch on the channel, the following conditions must be met.
tAOFD must be met before issuing the EMRS command.
ODT must remain LOW for the entire duration of tMOD window, until tMOD,max is met.
Now the ODT is ready for normal operation with the new setting, and the ODT signal may be raised
again to turned on the ODT. Following timing diagram shows the proper Rtt update procedure.
CLK
CMD
ODT
Rtt
Old setting
New setting
tAOND
tIS
tMOD,max
tAOFD
EMRS
NOP
1) EMRS command directed to EMR(1), which updates the information in EMR(1)[A6,A2], i.e. Rtt (Nominal).
2) "setting" in this diagram is what is measured from outside.
Figure 11
– ODT update delay timing - tMOD, as measured from outside
相關(guān)PDF資料
PDF描述
WF512K32-150CJC 512K X 32 FLASH 5V PROM MODULE, 150 ns, CQCC68
W73B586A-09L 32K X 18 CACHE SRAM, 9 ns, PQCC52
WS512K32-100G4TM 2M X 8 MULTI DEVICE SRAM MODULE, 100 ns, CQFP68
WS512K32-35G4M 2M X 8 MULTI DEVICE SRAM MODULE, 35 ns, CQFP68
WS512K32-35G4Q 2M X 8 MULTI DEVICE SRAM MODULE, 35 ns, CQFP68
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W972GG8JB-25I 制造商:Winbond Electronics Corp 功能描述:IC DDR2 SDRAM 2GBIT 2.5NS 制造商:Winbond Electronics Corp 功能描述:IC DDR2 SDRAM 2GBIT 2.5NS 80WBGA
W972GG8JB-3 制造商:Winbond Electronics Corp 功能描述:DRAM Chip DDR2 SDRAM 2G-Bit 256Mx8 1.8V 60-Pin WBGA 制造商:Winbond Electronics Corp 功能描述:IC DDR2 SDRAM 2GBIT 3NS
W9751G6IB-25 功能描述:IC DDR2-800 SDRAM 512MB 84-WBGA RoHS:是 類別:集成電路 (IC) >> 存儲器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (512 x 8) 速度:400kHz 接口:I²C,2 線串口 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:8-MFP 包裝:帶卷 (TR)
W9751G6JB 制造商:WINBOND 制造商全稱:Winbond 功能描述:8M ? 4 BANKS ? 16 BIT DDR2 SDRAM
W9751G6JB-25 制造商:Winbond Electronics Corp 功能描述:512GB DDRII