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EM68A16CBQC-18IH Datasheet(PDF) 4 Page - Etron Technology, Inc.

Part # EM68A16CBQC-18IH
Description  EM68A16CBQC-18IH
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Manufacturer  ETRON [Etron Technology, Inc.]
Direct Link  http://www.etron.com
Logo ETRON - Etron Technology, Inc.

EM68A16CBQC-18IH Datasheet(HTML) 4 Page - Etron Technology, Inc.

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EtronTech
EM68A16CBQC
Rev. 1.0
4
May /2015
Figure 3. State Diagram
(E)MRS
Setting
MR,
EMR(1)
EMR(2)
EMR(3)
OCD
calibration
Initialization
Sequence
Idle
All banks
precharged
Self
Refreshing
Refreshing
Precharge
Power
Down
Activating
Active
Power
Down
Bank
Active
Writing
Writing
With
Autoprecharge
Precharging
Reading
With
Autoprecharge
Reading
ACT
CKE
L
CKEH
CKEL
WR
RDA
RD
A
WR
A
WR
RD
RD
PR, PRA
PR, PRA
PR, PRA
RDA
WRA
CK
EL
CKE
H
CKE
L
SRF
CKE
H
REF
CKEL
WR
RD
PR
CKEL
CKEL
Automatic Sequence
Cammand Sequence
CKEL = CKE LOW, enter Power Down
CKEH = CKE HIGH, exit Power Down,exit Self Refresh
ACT = Activate
WR(A) = Write (with Autoprecharge)
RD(A) = Read (with Autoprecharge)
PR(A) = Precharge (All)
(E)MRS = (Extended) Mode Register Set
SRF = Enter Self Refresh
REF = Refresh
Note: Use caution with this diagram. It is indented to provide a floorplan of the possible state transitions and the
commands to control them, not all details. In particular situations involving more than one bank,
enabling/disabling on-die termination, Power Down entry/exit, timing restrictions during state transitions, among
other things, are not captured in full detail.


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