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參數(shù)資料
| 型號： | W9412G2IB-4 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | DRAM |
| 英文描述： | 4M X 32 DDR DRAM, 0.6 ns, PBGA144 |
| 封裝： | 12 X 12 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LFBGA-144 |
| 文件頁數(shù)： | 2/50頁 |
| 文件大小： | 826K |
| 代理商： | W9412G2IB-4 |
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W9412G2IB
Publication Release Date: Aug. 30, 2010
- 10 -
Revision A06
7. FUNCTIONAL DESCRIPTION
7.1 Power Up Sequence
(1) Apply power and attempt to CKE at a low state (
≤ 0.2V), all other inputs may be undefined
1) Apply VDD before or at the same time as VDDQ.
2) Apply VDDQ before or at the same time as VTT and VREF.
(2) Start Clock and maintain stable condition for 200 S (min.).
(3) After stable power and clock, apply NOP and take CKE high.
(4) Issue precharge command for all banks of the device.
(5) Issue EMRS (Extended Mode Register Set) to enable DLL and establish Output Driver Type.
(6) Issue MRS (Mode Register Set) to reset DLL and set device to idle with bit A8.
(An additional 200 cycles(min) of clock are required for DLL Lock before any executable
command applied.)
(7) Issue precharge command for all banks of the device.
(8) Issue two or more Auto Refresh commands.
(9) Issue MRS-Initialize device operation with the reset DLL bit deactivated A8 to low.
2 Clock min.
tRFC
MRS
CLK
Command
ANY
CMD
AREF
PREA
MRS
EMRS
PREA
CLK
tRFC
tRP
Enable DLL
DLL reset with A8 = High
Disable DLL reset with A8 = Low
200 Clock min.
2 Clock min.
Inputs
maintain stable
for 200 S min.
Initialization sequence after power-up
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W9412G2IB-5 | 制造商:Winbond Electronics Corp 功能描述:8*16 DDR1 |
| W9412G6CH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:2M 】 4 BANKS 】 16 BITS DDR SDRAM |
| W9412G6IH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:2M × 4 BANKS × 16 BITS DDR SDRAM |
| W9412G6IH-5 | 功能描述:IC DDR-400 SDRAM 128MB 66TSSOPII 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) |
| W9412G6JH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:2M ? 4 BANKS ? 16 BITS DDR SDRAM |
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