EM6AB160
EtronTech
Figure 13. Read to Precharge Required CAS Latencies (CL=2)
CK
CK
COMMAND
ADDRESS
READ
NOP
PRE
NOP
NOP
ACT
tRP
Bank A,
Col n
Bank
(a or all)
Bank A,
Row
CL=2
DQS
DQ
DO
n
DO n = Data Out from column n
Cases shown are either uninterrupted bursts of 4, or interrupted bursts of 8
3 subsequent elements of Data Out appear in the programmed order
following DO n
Precharge may be applied at (BL/2) tCK after the READ command
Note that Precharge may not be issued before tRAS ns after the ACTIVE
command for applicable banks
The Active command may be applied if tRC has been met
Don’t Care
Rev.1.3
31
Jun. /2015
ETRON [ ETRON TECHNOLOGY, INC. ]
