參數(shù)資料
型號: EDE5108AGSE
廠商: Elpida Memory, Inc.
元件分類: 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
文件頁數(shù): 20/66頁
文件大?。?/td> 697K
代理商: EDE5108AGSE
EDE5104ABSE, EDE5108ABSE, EDE5116ABSE
Data Sheet E0323E90 (Ver. 9.0)
20
Function Truth Table
The following tables show the operations that are performed when each command is issued in each state of the
DDR SDRAM.
Current state
/CS
/RAS /CAS /WE
Address
Command
Operation
Notes
Idle
H
×
×
×
×
DESL
Nop or Power down
L
H
H
H
×
NOP
Nop or Power down
L
H
L
H
BA, CA, A10 (AP)
READ
ILLEGAL
1
L
H
L
H
BA, CA, A10 (AP)
READA
ILLEGAL
1
L
H
L
L
BA, CA, A10 (AP)
WRIT
ILLEGAL
1
L
H
L
L
BA, CA, A10 (AP)
WRITA
ILLEGAL
1
L
L
H
H
BA, RA
ACT
Row activating
L
L
H
L
BA, A10 (AP)
PRE
Precharge
L
L
H
L
A10 (AP)
PALL
Precharge all banks
L
L
L
H
×
REF
Auto refresh
2
L
L
L
H
×
SELF
Self refresh
2
L
L
L
L
BA, MRS-OPCODE
MRS
Mode register accessing
2
L
L
L
L
BA, EMRS-OPCODE
EMRS
Extended mode register accessing
2
Bank(s) active
H
×
×
×
×
DESL
Nop
L
H
H
H
×
NOP
Nop
L
H
L
H
BA, CA, A10 (AP)
READ
Begin Read
L
H
L
H
BA, CA, A10 (AP)
READA
Begin Read
L
H
L
L
BA, CA, A10 (AP)
WRIT
Begin Write
L
H
L
L
BA, CA, A10 (AP)
WRITA
Begin Write
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA, A10 (AP)
PRE
Precharge
L
L
H
L
A10 (AP)
PALL
Precharge all banks
L
L
L
H
×
REF
ILLEGAL
L
L
L
H
×
SELF
ILLEGAL
L
L
L
L
BA, MRS-OPCODE
MRS
ILLEGAL
L
L
L
L
BA, EMRS-OPCODE
EMRS
ILLEGAL
Read
H
×
×
×
×
DESL
Continue burst to end -> Row active
L
H
H
H
×
NOP
Continue burst to end -> Row active
L
H
L
H
BA, CA, A10 (AP)
READ
Burst interrupt
1, 4
L
H
L
H
BA, CA, A10 (AP)
READA
Burst interrupt
1, 4
L
H
L
L
BA, CA, A10 (AP)
WRIT
ILLEGAL
1
L
H
L
L
BA, CA, A10 (AP)
WRITA
ILLEGAL
1
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA, A10 (AP)
PRE
ILLEGAL
1
L
L
H
L
A10 (AP)
PALL
ILLEGAL
L
L
L
H
×
REF
ILLEGAL
L
L
L
H
×
SELF
ILLEGAL
L
L
L
L
BA, MRS-OPCODE
MRS
ILLEGAL
L
L
L
L
BA, EMRS-OPCODE
EMRS
ILLEGAL
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