參數(shù)資料
型號(hào)： EDE5108AGSE
廠商： Elpida Memory, Inc.
元件分類(lèi)： 圓形連接器
英文描述： Circular Connector; No. of Contacts:6; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:17-6 RoHS Compliant: No
中文描述： 512M比特DDR2 SDRAM內(nèi)存
文件頁(yè)數(shù)： 55/66頁(yè)
文件大小： 697K
代理商： EDE5108AGSE
EDE5104ABSE, EDE5108ABSE, EDE5116ABSE
Data Sheet E0323E90 (Ver. 9.0)
55
Self Refresh Command [SELF]
The DDR2 SDRAM device has a built-in timer to accommodate self-refresh operation. The self-refresh command is
defined by having /CS, /RAS, /CAS and CKE held low with /WE high at the rising edge of the clock.
ODT must be turned off before issuing self refresh command, by either driving ODT pin low or using EMRS
command. Once the command is registered, CKE must be held low to keep the device in self-refresh mode.
When the DDR2 SDRAM has entered self refresh mode all of the external signals except CKE, are “don’t care”.
The clock is internally disabled during self-refresh operation to save power. The user may change the external clock
frequency or halt the external clock one clock after Self-Refresh entry is registered, however, the clock must be
restarted and stable before the device can exit self refresh operation. Once self-refresh exit command is registered,
a delay equal or longer than the tXSNR or tXSRD must be satisfied before a valid command can be issued to the
device. CKE must remain high for the entire self-refresh exit period tXSRD for proper operation. NOP or deselect
commands must be registered on each positive clock edge during the self-refresh exit interval. ODT should also be
turned off during tXSRD.
Notes: 1. Device must be in the “All banks idle” state prior to entering self refresh mode.
2. ODT must be turned off tAOFD before entering self refresh mode, and can be turned on again
when tXSRD timing is satisfied.
3. tXSRD is applied for a read or a read with autoprecharge command.
4. tXSNR is applied for any command except a read or a read with autoprecharge command.
Self Refresh Command
Comand
CK
T0
T2
T1
Tm
Tn
CKE
T3
T4
T5
ODT
T6
tAOFD
/CK
≥
tXSNR
≥
tXSRD
tRP*
tCK
tCH tCL
tIS
tIS
tIS
tIS tIH
Valid
NOP
NOP
SELF
NOP
相關(guān)PDF資料
PDF描述
EDE5104AGSE-4A-E Circular Connector; No. of Contacts:6; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-35 RoHS Compliant: No
EDE5108AGSE-4A-E Circular Connector; No. of Contacts:6; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-35 RoHS Compliant: No
EDE5104AGSE-5C-E Circular Connector; No. of Contacts:13; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:11; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:11-35 RoHS Compliant: No
EDE5108AGSE-5C-E 512M bits DDR2 SDRAM
EDE5104AGSE-6C-E LJT 6C 6#20 SKT RECP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EDE5108AGSE-4A-E 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:512M bits DDR2 SDRAM
EDE5108AGSE-5C-E 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:512M bits DDR2 SDRAM
EDE5108AGSE-6C-E 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:512M bits DDR2 SDRAM
EDE5108AGSE-6E-E 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:512M bits DDR2 SDRAM
EDE5108AHBG 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:512M bits DDR2 SDRAM
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