IC43R16160 Datasheet, PDF (49/56 Pages) Integrated Circuit Solution Inc – 4M x 16 Bit x 4 Banks (256-MBIT) DDR SDRAM

IC43R16160
Figure 42 - READ - WITHOUT AUTO PRECHARGE
/CK
CK
CKE
COMMAND
x4:A0-A9
x8:A0-A8
x16:A0-A7
x4:A11
x8:A9, A11
x16:A8, A9, A11
A10
tIS tIH
tIS tIH
NOP
BA0, BA1
DM
tCK
tCH tCL
READ
NOP
tIS tIH
Col n
tIH
StartAutoprecharge
PRE
NOP
NOP
tIS tIH
ALL BANKS
DIS AP
tIS tIH
ONE BANK
Bank x
*Bank x
CL = 2
tRP
ACT
RA
RA
RA
Bank x
Case 1:
tAC/tDQSCK = min
DQS
DQ
tRPRE
t _DQSCK
min
tRPST
tLZ
tHZ
min
DO
min
n
tLZ
tAC
min
min
VALID
NOP
VALID
NOP
VALID
NOP
Case 2:
tAC/tDQSCK = max
DQS
DQ
tRPRE
t _DQSCK
max
tRPST
tLZ
tHZ
max
DO
max
n
tLZ
t _AC
max
max
DO n = Data Out from column n
Burst Length = 4 in the case shown
3 subsequent elements of Data Out are provided in the programmed order following DO n
DIS AP = Disable Autoprecharge
* = "Don't Care", if A10 is HIGH at this point
PRE = PRECHARGE, ACT = ACTIVE, RA = Row Address, BA = Bank Address
NOP commands are shown for ease of illustration; other commands may be valid at these times
DON'T CARE
Integrated Circuit Solution Inc.
49
DDR001-0B 11/10/2004