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M12L128168A-6TG Datasheet

  • M12L128168A-6TG

  • 2M x 16 Bit x 4 Banks Synchronous DRAM

  • 786.74KB

  • 43頁(yè)

  • ESMT

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ESMT
Write command
( CS , CAS ,
WE
= Low, RAS = High)
If the mode register is in the burst write mode, this command sets the burst start
address given by the column address to begin the burst write operation. The first
write data in burst can be input with this command with subsequent data on following
clocks.
M12L128168A
CLK
CKE
CS
RAS
CAS
WE
A12, A13
H
(Bank select)
A10
Add
Col.
Fig. 4 Column address and
write command
CLK
Read command
( CS , CAS = Low, RAS ,
WE
= High)
Read data is available after CAS latency requirements have been met.
This command sets the burst start address given by the column address.
CKE
CS
RAS
CAS
WE
A12, A13
(Bank select)
H
A10
Add
Col.
Fig. 5 Column address and
read command
CBR (auto) refresh command
( CS , RAS , CAS = Low,
WE
, CKE = High)
This command is a request to begin the CBR refresh operation. The refresh
address is generated internally.
Before executing CBR refresh, all banks must be precharged.
After this cycle, all banks will be in the idle (precharged) state and ready for a
row activate command.
During t
RC
period (from refresh command to refresh or activate command), the
M12L128168A cannot accept any other command.
CLK
CKE
CS
RAS
CAS
WE
A12, A13
(Bank select)
H
A10
Add
Fig. 6 Auto refresh command
Elite Semiconductor Memory Technology Inc.
Publication Date: Oct. 2006
Revision: 2.0
14/43

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