EDD51321DBH-5BTS-F ELPIDA [Elpida Memory], EDD51321DBH-5BTS-F Datasheet - Page 17

• Manufacturer Part Number: EDD51321DBH-5BTS-F
• Manufacturer: ELPIDA [Elpida Memory]

Function Truth Table
The following tables show the operations that are performed when each command is issued in each state of the
DDR Mobile RAM.
Current state
Precharging*
Idle*
Refresh
(auto-refresh)*
Activating*
Active*
Preliminary Data Sheet E1398E40 (Ver. 4.0)
2
5
4
1
3
/CS
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
H
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
/RAS /CAS /WE
H
H
H
H
L
L
L
H
H
H
H
L
L
L
L
H
H
H
L
H
H
H
H
L
L
L
H
H
H
H
L
L
L
H
H
L
L
H
H
L
H
H
L
L
H
H
L
L
H
H
L
H
H
L
L
H
H
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
Address
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
MODE
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
17
Command
WRIT/WRITA
ACT
PRE, PALL
WRIT/WRITA
PRE, PALL
WRIT/WRITA
ACT
PRE, PALL
READ/READA
WRIT/WRITA
ACT
PRE, PALL
DESL
NOP
BST
READ/READA
DESL
NOP
BST
READ/READA
ACT
REF, SELF
MRS
DESL
NOP
BST
DESL
NOP
BST
READ/READA
DESL
NOP
BST
EDD51321DBH-TS
Operation
NOP
NOP
ILLEGAL*
ILLEGAL*
ILLEGAL*
ILLEGAL*
NOP
ILLEGAL
NOP
NOP
NOP
ILLEGAL*
ILLEGAL*
Activating
NOP
Refresh/
Self-refresh*
Mode register set*
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
NOP
NOP
ILLEGAL*
ILLEGAL*
ILLEGAL*
ILLEGAL*
ILLEGAL*
ILLEGAL
NOP
NOP
NOP
Starting read operation
Starting write operation
ILLEGAL*
Pre-charge
ILLEGAL
11
11
11
11
11
11
11
11
11
11
11
11
12
12