Datasheet

AS4C32M16D1A-C&I
55 Rev. 1.0 Mar. /2015
Figure 40. Write with Auto Precharge
CK
CK
A0-A9
A11,A12
NOP
COMMAND
t
IS
t
IH
NOP
NOP NOP
VALID
t
IS
t
IH
t
CH
t
CL
t
CK
RA
CKE
A10
BA0,BA1
DQS
NOP
WRITE
RA
t
IH
t
IS
DQ
t
DSH
NOP
NOP NOP
ACT
Col n
t
IS
t
IH
RA
Bank X
DIS AP
BA
t
WPRES
Case 1:
t
DQSS
=min
DI
n
t
DQSS
t
DSH
t
DQSH
t
DQSL
t
WPST
t
WPRE
DM
DQS
DQ
t
DSS
t
WPRES
Case 2:
t
DQSS
=max
DI
n
t
DQSS
t
DSS
DM
t
DAL
t
DQSH
t
WPST
t
DQSL
VALID
VALID
t
WPRE
Don’t Care
DI n = Data In from column n
Burst Length = 4 in the case shown
3 subsequent elements of Data Out are provided in the programmed order following DI n
EN AP = Enable Autoprecharge
ACT = ACTIVE, RA = Row Address, BA = Bank Address
NOP commands are shown for ease of illustration; other commands may be valid at these times
Although tDQSS is drawn only for the first DQS rising edge, each rising edge of DQS must fall within the + 25%
window of the corresponding positive clock edge