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EM68932DVKB Scheda tecnica(PDF) 37 Page - Etron Technology, Inc.

Il numero della parte EM68932DVKB
Spiegazioni elettronici  4M x 32 Mobile DDR Synchronous DRAM (SDRAM)
PDF  40 Pages
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Produttore elettronici  ETRON [Etron Technology, Inc.]
Homepage  http://www.etron.com
Logo ETRON - Etron Technology, Inc.

EM68932DVKB Scheda tecnica(HTML) 37 Page - Etron Technology, Inc.

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EtronTech
EM68932DVKB
Etron Confidential
37
Rev. 1.0
Aug. 2009
Figure 31. Interrupting Write to Precharge
WRITE
NOP
NOP
NOP
PRE
NOP
BA, Col b
BA a
(or all)
DQS
DQ
CK
CK
(1) DI b = Data In to column b.
(2) An interrupted burst of 4 or 8 is shown, 2 data elements are written.
(3) tWTR is referenced from the positive clock edge after the last desired Data in pair.
(4) A10 is LOW with the WRITE command (Auto Precharge is disabled)
(5) *1 = can be Don’t Care for programmed burst length of 4
(6) *2 = for programmed burst length of 4, DQS becomes Don’t Care at this point
DI b
DM
tDQSS max
Command
Address
tWR
Don’t Care
*2
*1
*1
*1
*1
Figure 32. Precharge Command
(High)
Don’t Care
A0-A9
A11
A10
CK
CK
CKE
CS
RAS
CAS
WE
BA0,1
BA
BA = Bank Address
(if A10 = L, otherwise Don’t Care)
All Banks
One Bank



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