參數(shù)資料
型號(hào)： K4H280838A-TCA0
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： DIODE ZENER SINGLE 200mW 5.6Vz 0.05mA-Izt 0.05 2uA-Ir 4 SOD-323 3K/REEL
中文描述： 128MB DDR SDRAM的
文件頁(yè)數(shù)： 32/53頁(yè)
文件大小： 669K
代理商： K4H280838A-TCA0
- 32 -
REV. 1.0 November. 2. 2000
128Mb DDR SDRAM
3.3.14 Power down
CKE
Precharge
Active
Active
power
down
Exit
Read
Active
power
down
Entry
power
down
Entry
Precharge
Command
～
～
～
～
～
～
CK
CK
The power down mode is entered when CKE is low and exited when CKE is high. Once the power down
mode is initiated, all of the receiver circuits except clock, CKE and DLL circuit tree are gated off to reduce
power consumption. All banks should be in idle state prior to entering the precharge power down mode and
CKE should be set high at least 1tck+tIS prior to row active command . During power down mode, refresh
operations cannot be performed, therefore the device cannot be remained in power down mode longer than
the refresh period(Data retension time) of the device.
Figure 23. Power down entry and exit timing
相關(guān)PDF資料
PDF描述
K4H513238M-TCA0 RECTIFIER FAST-RECOVERY SINGLE 1A 50V 30A-ifsm 0.98V-vf 25ns 5uA-ir SMA 5K/REEL-13
K4H1G3238M-TCA0 DIODE, FAST RECOVERY RECTIFIER, 1A
K4H640438E-TCA0 PC ENCLOSURE - GRAY COVER RoHS Compliant: Yes
K4H640438E-TCA2 Euronord Enclosure; NEMA Type:1, 4, 4X, 12, 13; Enclosure Material:Polycarbonate; External Height:7.9"; External Width:5.9"; External Depth:3.1"; Enclosure Color:Gray
K4H640438E-TCB0 Euronord Enclosure; NEMA Type:1, 4, 4X, 12, 13; Enclosure Material:Polycarbonate; External Height:9.8"; External Width:6.3"; External Depth:3.5"; Enclosure Color:Gray
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
K4H280838A-TCA2 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H280838A-TCB0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H280838A-TLA0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H280838A-TLA2 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
K4H280838A-TLB0 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM
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