EM68B16DVAA
EtronTech
Figure 20. Read to precharge
CK
CK
READ
NOP
PRE
NOP
NOP
ACT
Command
Address
Bank
(a or all)
BA, Col n
BA, Row
CL = 2
CL = 3
tRP
DQS
DQ
DO n
DQS
DQ
DO n
Don’t Care
(1) DO n = Data Out from column n
(2) Cases shown are either uninterrupted burst of 4, or interrupted bursts of 8.
(3) Shown with nominal tAC, tDQSCK and tDQSQ.
(4) Precharge may be applied at (BL/2) tCK after the READ command.
(5) Note that Precharge may not be issued before tRAS ns after the ACTIVE command for applicable banks.
(6) The ACTIVE command may be applied if tRC has been met.
Figure 21. Burst Terminate Command
CK
CK
(High)
CKE
CS
RAS
CAS
WE
A0-A12
BA0,BA1
Don’t Care
Etron Confidential
28
Rev. 1.0
Mar. 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
