EtronTech
EM6AA160
Figure 38. Bank Read Access
tCK
tCH tCL
CK
CK
tIS tIH
CKE
tIS tIH
NOP
ACT
NOP
NOP
NOP
NOP
READ
Col n
PRE
NOP
NOP
ACT
COMMAND
A0-A8
tIS tIH
RA
RA
RA
A9,A11,A12
RA
RA
tIS tIH
ALL BANKS
ONE BANKS
A10
RA
DIS AP
tIS
tIH
Bank X
Bank X
Bank X
*Bank X
BA0,BA1
tRC
tRAS
CL=3
tRCD
tRP
DM
Case 1:
tAC/tDQSCK=min
tDQSCK
min
tRPST
tRPRE
DQS
DQ
tLZ
DO
n
min
tLZ
tAC
min
min
Case 2:
tDQSCK
max
tRPST
tAC/tDQSCK=max
tRPRE
DQS
tHZ
max
tLZ
max
DO
n
DQ
tLZ
tAC
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
Note that tRCD > tRCD MIN so that the same timing applies if Autoprecharge is enabled (in which case tRAS
would be limiting)
Don’t Care
Etron Confidential
57
Rev. 1.3
Mar. /2014
ETRON [ ETRON TECHNOLOGY, INC. ]
