VV6444 查看數據表（PDF） - STMicroelectronics
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VV6444 Datasheet PDF : 63 Pages
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STV0680B + VV6444/6410/6500
STV0680B hardware interfaces
DCLK
CKE
Command
A0-9,BA
A10
DQM
DQ
tCK
tL
tH
tCMS tCMH
ACTIVE
READ
ROW
ROW
tAS
tAH
tCMS
NOP
COLUMN
PRECHARGE
NOP
tAC
tOH
tCMH
tRCD
DOUT M
READ Latency
tRAS
DOUT M + 1
DOUT M + 2
DOUT M + 3
tRC
tRP
DQ sample
DQ sample
DQ sample
Figure 5 : SDRAM read timing (16Mbit device, burst read)
DQ sample
DCLK
CKE
Command
A0-9,BA
A10
DQM
DQ
tCK
tL
tH
tCMS tCMH
ACTIVE
WRITE
ROW
ROW
tAS
tAH
tCMS
NOP
COLUMN
PRECHARGE
NOP
tDS
tDH
tCMH
DIN M
DIN M + 1
DIN M + 2
DIN M + 3
tRCD
tRC
tRAS
tRP
Figure 6 : SDRAM write timing (16Mbit device, burst write)
Version 3.4
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