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EM68932DVKB датащи(PDF) 40 Page - Etron Technology, Inc.

номер детали EM68932DVKB
подробное описание детали  4M x 32 Mobile DDR Synchronous DRAM (SDRAM)
PDF  40 Pages
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производитель  ETRON [Etron Technology, Inc.]
домашняя страница  http://www.etron.com
Logo ETRON - Etron Technology, Inc.

EM68932DVKB датащи(HTML) 40 Page - Etron Technology, Inc.

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EtronTech
EM68932DVKB
Etron Confidential
40
Rev. 1.0
Aug. 2009
Figure 37. Power-Down Entry and Exit
High-Z
PRE
NOP
NOP
tRP
Don’t Care
NOP
NOP
NOP
Pre All
tCKE
CK
CK
DQ
tXP
A10 (AP)
Address
Command
CKE
Valid
Valid
Valid
Power Down
Entry
Exit From
Power Down
Any
Command
Precharge Power-Down mode shown: all banks are idle and tRP is met
when Power-Down Entry command is issued
Figure 38. Deep Power-Down Entry and Exit
Don’t Care
NOP
DPD
NOP
Valid
Valid
CK
CK
(1) Clock must be stable before exiting Deep Power-Down mode. That is, the clock must be cycling
within specifications by Ta0
(2) Device must be in the all banks idle state prior to entering Deep Power-Down mode
(3) 200µs is required before any command can be applied upon exiting Deep Power-Down mode
(4) Upon exiting Deep Power-Down mode a PRECHARGE ALL command must be issued, followed
by two AUTO REFRESH commands and a load mode register sequence
tRP
T0
T1
Ta0
Ta1
Ta2
Address
Command
DQS
DQ
DM
CKE
Enter DPD Mode
Exit DPD Mode
T = 200µs



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