IS43R16800A-6T ISSI [Integrated Silicon Solution, Inc], IS43R16800A-6T Datasheet - Page 19

• Manufacturer Part Number: IS43R16800A-6T
• Description: 8Meg x 16 128-MBIT DDR SDRAM
• Manufacturer: ISSI [Integrated Silicon Solution, Inc]

IS43R16800A-6
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00A
04/04/06
Current state
Read*
Read with auto-pre-
charge*
Write*
Write recovering*
8
6
7
9
/CS
H
L
L
L
L
L
L
L
H
L
L
L
L
L
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
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
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
Address
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
Command
WRIT/WRITA
ACT
PRE, PALL
WRIT/WRITA
ACT
PRE, PALL
WRIT/WRITA
ACT
PRE, PALL
READ/READA
WRIT/WRITA
ACT
PRE/PALL
DESL
NOP
BST
READ/READA
DESL
NOP
BST
READ/READA
DESL
NOP
BST
READ/READA
DESL
NOP
BST
ILLEGAL*
Starting read operation. Read/ReadA
ILLEGAL*
Operation
NOP
NOP
BST
Interrupting burst read
operation to
start new read
ILLEGAL*
ILLEGAL*
Interrupting burst
read operation to
start pre-charge
ILLEGAL
NOP
NOP
ILLEGAL
ILLEGAL*
ILLEGAL*
ILLEGAL*
ILLEGAL
NOP
NOP
ILLEGAL
Interrupting burst write
operation to
start read operation.
Interrupting burst write
operation to
start new write
operation.
ILLEGAL*
Interrupting write
operation to start pre-
charge.
ILLEGAL
NOP
NOP
ILLEGAL
Starting new write
operation.
ILLEGAL*
ILLEGAL
13
11
14
14
11, 14
11, 14
11
11
11
Next state
Active
Active
Active
Active
—
—
Precharging
—
Precharging
Precharging
—
—
—
—
—
—
Write
recovering
Write
recovering
—
Read/ReadA
Write/WriteA
—
Idle
—
Active
Active
—
Write/WriteA
—
—
—
ISSI
19
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