AS4C8M32S
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
CLK
DQM
BANKA
ACTIVATE
WRITE A
DIN A0
NOP
NOP
NOP
READ A
NOP
NOP
NNOOPP
NOP
COMMAND
CAS# latency=2
tCK2, DQ
DIN A1
DIN A2
DIN A3
Must be Hi-Z before
the Write Command
Figure 6. Read to Write Interval
(Burst Length 4, CAS# Latency = 2)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK
DQM
WRITE B
DIN B0
NOP
NOP
READ A
NOP
NOP
NOP
NOP
NOP
COMMAND
CAS# latency=2
tCK2, DQ
DIN B1
DIN B2
DIN B3
Must be Hi-Z before
the Write Command
Don’t Care
≧
Figure 7. Read to Write Interval
(Burst Length
T4 T5
4, CAS# Latency = 3)
T0
T1
T2
T3
T6 T7 T8
CLK
DQM
WRITE B
DIN B0
NOP
READ A
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
CAS# latency=3
tCK3, DQ
DOUT A0
DIN B1
DIN B2
Must be Hi-Z before
the Write Command
Don’t Care
Figure 8. Read to Write Interval
(Burst Length 4, CAS# Latency = 2)
Alliance Memory Confidential
9
Rev. 2.0 May /2014
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
