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Part Name
Description
EDD5104ABTA-6B View Datasheet(PDF) - Elpida Memory, Inc
Part Name
Description
Manufacturer
EDD5104ABTA-6B
512M bits DDR SDRAM
Elpida Memory, Inc
EDD5104ABTA-6B Datasheet PDF : 50 Pages
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EDD5104ABTA, EDD5108ABTA
Function Truth Table
The following tables show the operations that are performed when each command is issued in each state of the
DDR SDRAM.
Function Truth Table (1)
Current state
/CS /RAS /CAS /WE
Precharging*
1
H
×
×
×
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
Idle*
2
L
L
L
×
H
×
×
×
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
Address
×
×
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
×
×
×
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
L
L
L
H
×
L
L
L
L
MODE
Refresh
(auto-refresh)*
3
H
×
×
×
×
L
H
H
H
×
L
H
H
L
×
L
H
L
×
×
L
L
×
×
×
Command
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE, PALL
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE, PALL
REF, SELF
MRS
DESL
NOP
BST
Operation
NOP
NOP
ILLEGAL*
11
ILLEGAL*
11
ILLEGAL*
11
ILLEGAL*
11
NOP
ILLEGAL
NOP
NOP
ILLEGAL*
11
ILLEGAL*
11
ILLEGAL*
11
Activating
NOP
Refresh/
Self refresh*
12
Mode register set*
12
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
Next state
ldle
ldle
—
—
—
—
ldle
—
ldle
ldle
—
—
—
Active
ldle
ldle/
Self refresh
ldle
ldle
ldle
—
—
—
Preliminary Data Sheet E0237E30 (Ver. 3.0)
15
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