AS4C128M16D2A Datasheet, PDF (46/63 Pages) –

AS4C128M16D2A-25BCN
AS4C128M16D2A-25BIN
Figure 27. Burst write operation: RL=5 (AL=2, CL=3), WL=4, BL=4
T0
T1
T2
CK#
CK
CMD Posted CAS#
WRITE A
NOP
NOP
Case 1: with t_{DQSS (max)}
DQS
DQS#
WL = RL-1 =4
DQs
Case 2: with t_{DQSS (min)}
DQS
DQS#
WL = RL-1 =4
DQs
T3
T4
T5
T6
T7
NOP
NOP
t_DQSS
NOP
t_DSS t_DQSS
NOP
NOP
t_DSS Completion of the
Burst Write
>=t_WR
DNA₀ DNA₁ DNA₂ DNA₃
t_DQSS t_DSH
t_DQSS t_DSH
DNA₀ DNA₁ DNA₂ DNA₃
>=t_WR
Tn
Precharge
Figure 28. Burst write operation: RL=3 (AL=0, CL=3), WL=2, BL=4
T0
CK#
CK
CMD WRITE A
T1
NOP
DQS
DQS#
DQs
WL = RL-1 =2
T2
T3
T4
T5
NOP
<=t_DQSS
NOP
NOP
NOP
Completion of the
Burst Write
DNA0 DNA1 DNA2 DNA3
>=t_WR
Tm
Tm+1
Precharge
NOP
>=t_RP
Tn
Bank A
Activate
Confidential
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Rev.1.0 Dec 2015