W949D6DB Datasheet, PDF (38/60 Pages) Winbond – Standard Self Refresh Mode

W949D6DB / W949D2DB
8.6.5 Concatenated Write Bursts
An example of concatenated write bursts is shown in below figure.
CK
CK
Command
WRITE
NOP
WRITE
NOP
NOP
NOP
Address
DQS
BA,Col b
t_DQSSmin
BA,Col n
DQ
DI b
DI n
DM
DQS
t_DQSSmax
DQ
DI b
DI n
DM
1) DI b (n) = Data in to column b (column n)
2) 3 subsequent elements of Data In are applied in the programmed order following DI b.
3 subsequent elements of Data In are applied in the programmed order following DI n.
3) Non-interrupted bursts of 4 are shown.
4) Each WRITE command may be to any active bank
8.6.6 Non-Concatenated Write Bursts
An example of non-concatenated write bursts is shown in below figure.
CK
CK
Command
WRITE
NOP
NOP
WRITE
NOP
Address
DQS
BA,Col b
t_DQSSmax
BA,Col n
= Don't Care
NOP
DQ
DI b
DI n
DM
1) Dl b (n) = Data in to column b (or column n)
2) 3 subsequent elements of Data In are applied in the programmed order following DI b.
3 subsequent elements of Data In are applied in the programmed order following DI n.
3) Non-interrupted bursts of 4 are shown.
4) Each WRITE command may be to any active bank and may be to the same or different devices.
= Don't Care
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Publication Release Date: Oct. 08, 2014
Revision: A01-003