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AS4C64M8D2 데이터시트(PDF) 41 Page - Alliance Semiconductor Corporation

부품명 AS4C64M8D2
상세설명  Fully synchronous operation
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AS4C64M8D2
Confidential
41
Rev. 1.0
Feb. /2014
Figure 24. Burst write operation: RL=5 (AL=2, CL=3), WL=4, BL=4
CK#
CK
tDQSS
CMD
Case 1: with tDQSS (max)
>=tWR
T0
T1
T2
T3
T4
T5
T6
T7
Tn
Posted CAS#
WRITE A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
Precharge
tDSS tDQSS
tDSS Completion of the
Burst Write
WL = RL-1 =4
DNA0 DNA1 DNA2 DNA3
DQS
DQS#
>=tWR
WL = RL-1 =4
DNA0 DNA1 DNA2 DNA3
DQS
DQS#
tDQSS tDSH
tDQSS tDSH
Case 2: with tDQSS (min)
DQs
DQs
Figure 25. Burst write operation: RL=3 (AL=0, CL=3), WL=2, BL=4
CK#
CK
<=tDQSS
CMD
>=tWR
T0
T1
T2
T3
T4
T5
Tm
Tm+1
Tn
WRITE A
NOP
NOP
NOP
NOP
NOP
Precharge
NOP
Bank A
Activate
Completion of the
Burst Write
WL = RL-1 =2
DNA0 DNA1 DNA2 DNA3
DQS
DQS#
DQs
>=tRP



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