參數(shù)資料
型號: EDE5108AJBG-6E-E
廠商: ELPIDA MEMORY INC
元件分類: DRAM
英文描述: 512M bits DDR2 SDRAM
中文描述: 64M X 8 DDR DRAM, 0.45 ns, PBGA60
封裝: ROHS COMPLIANT, FBGA-60
文件頁數(shù): 29/77頁
文件大?。?/td> 589K
代理商: EDE5108AJBG-6E-E
EDE5108AJBG, EDE5116AJBG
Preliminary Data Sheet E1044E20 (Ver. 2.0)
29
Function Truth Table
The following tables show the operations that are performed when each command is issued in each state of the
DDR2 SDRAM.
Current state
/CS
/RAS /CAS /WE
Address
Command
Operation
Notes
Idle
H
×
×
×
×
DESL
Nop
L
H
H
H
×
NOP
Nop
L
H
L
H
BA, CA, A10 (AP)
READ/READA
ILLEGAL
1
L
H
L
L
BA, CA, A10 (AP)
WRIT/WRITA
ILLEGAL
1
L
L
H
H
BA, RA
ACT
Row activating
L
L
H
L
BA
PRE
Nop
L
L
H
L
A10 (AP)
PALL
Nop
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 (1) (2)
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/READA
Begin Read
L
H
L
L
BA, CA, A10 (AP)
WRIT/WRITA
Begin Write
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA
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 (1) (2)
ILLEGAL
Continue burst to end -> Row
active
Continue burst to end -> Row
active
Burst interrupt
Read
H
×
×
×
×
DESL
L
H
H
H
×
NOP
L
H
L
H
BA, CA, A10 (AP)
READ/READA
1, 4
L
H
L
L
BA, CA, A10 (AP)
WRIT/WRITA
ILLEGAL
1
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA
PRE
ILLEGAL
1, 8
L
L
H
L
A10 (AP)
PALL
ILLEGAL
8
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 (1) (2)
ILLEGAL
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