EDD5104ABTA, EDD5108ABTA
Function Truth Table (3)
Current state
/CS
/RAS /CAS /WE Address
Command
DESL
Operation
NOP
Next state
Read with auto-pre-
H
×
×
×
×
Precharging
charge*7
L
L
L
L
L
L
L
H
H
H
H
L
H
H
L
H
L
×
NOP
NOP
Precharging
×
BST
ILLEGAL
—
—
—
—
—
—
H
L
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
READ/READA
WRIT/WRITA
ACT
ILLEGAL*14
ILLEGAL*14
ILLEGAL*11, 14
ILLEGAL*11, 14
ILLEGAL
L
H
H
L
H
L
L
PRE, PALL
L
×
Write
recovering
Write*8
H
×
×
×
×
DESL
NOP
Write
L
L
H
H
H
H
H
L
×
×
NOP
BST
NOP
recovering
ILLEGAL
—
Interrupting burst write
operation to
L
H
L
H
BA, CA, A10
BA, CA, A10
READ/READA
Read/ReadA
start read operation.
Interrupting burst write
operation to
L
H
L
L
WRIT/WRITA
Write/WriteA
start new write
operation.
L
L
L
L
H
H
H
L
BA, RA
ACT
ILLEGAL*11
—
Interrupting write
operation to start pre-
charge.
BA, A10
PRE, PALL
Idle
L
H
L
L
L
L
L
×
×
ILLEGAL
—
Write recovering*9
×
×
×
×
DESL
NOP
Active
Active
—
H
H
H
H
H
L
H
L
×
NOP
NOP
×
BST
ILLEGAL
H
BA, CA, A10
READ/READA
Starting read operation. Read/ReadA
Starting new write
Write/WriteA
operation.
L
H
L
L
BA, CA, A10
WRIT/WRITA
L
L
L
L
L
L
H
H
L
H
L
BA, RA
BA, A10
×
ACT
ILLEGAL*11
ILLEGAL*11
ILLEGAL
—
—
—
PRE/PALL
×
Write with auto-
pre-charge*10
H
×
×
×
×
DESL
NOP
Precharging
L
L
L
L
L
L
L
H
H
H
H
L
H
H
L
H
L
×
NOP
NOP
Precharging
×
BST
ILLEGAL
—
—
—
—
—
—
H
L
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
×
READ/READA
WRIT/WRIT A
ACT
ILLEGAL*14
ILLEGAL*14
ILLEGAL*11, 14
ILLEGAL*11, 14
ILLEGAL
L
H
H
L
H
L
L
PRE, PALL
L
×
Remark: H: VIH. L: VIL. ×: VIH or VIL
Preliminary Data Sheet E0237E30 (Ver. 3.0)
17
ELPIDA [ ELPIDA MEMORY ]
