參數(shù)資料
型號(hào): W972GG8JB-25
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): 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(yè)數(shù): 7/86頁(yè)
文件大小: 1466K
代理商: W972GG8JB-25
W972GG8JB
Publication Release Date: Feb. 18, 2011
- 15 -
Revision A02
7.2.3
Off-Chip Driver (OCD) Impedance Adjustment
DDR2 SDRAM supports driver calibration feature and the flow chart in Figure 6 is an example of the
sequence. Every calibration mode command should be followed by “OCD calibration mode exit”
before any other command being issued. MRS should be set before entering OCD impedance
adjustment and On Die Termination (ODT) should be carefully controlled depending on system
environment.
Start
ALL OK
All MR shoud be programmed before entering OCD impedance adjustment and ODT should
be carefully controlled depending on system environment
EMRS: Drive(0)
DQ &DQS Low; DQS High
EMRS: OCD calibration mode exit
Test
Need Calibration
EMRS: OCD calibration mode exit
EMRS:
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec or NOP
EMRS: OCD calibration mode exit
ALL OK
EMRS: Drive(1)
DQ &DQS High; DQS Low
Test
Need Calibration
EMRS: OCD calibration mode exit
EMRS:
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec or NOP
EMRS: OCD calibration mode exit
End
Figure 6
– OCD Impedance Adjustment Flow Chart
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(lèi)別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類(lèi)型:EEPROM 存儲(chǔ)容量:4K (512 x 8) 速度:400kHz 接口:I²C,2 線(xiàn)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(chēng):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