Data Sheet.
HY[B/E]18L512160BF-7.5
512-Mbit Mobile-RAM
2.4.1
NO OPERATION (NOP)
The NO OPERATION (NOP) command is used to perform a
NOP to a Mobile-RAM which is selected (CS = LOW). This
prevents unwanted commands from being registered during
idle states. Operations already in progress are not affected.
FIGURE 6
No operation Command
#,+
#+%
ꢁ(IGHꢂ
#3
2!3
#!3
7%
!ꢃꢄ!ꢅꢆ
"!ꢃꢇ"!ꢅ
ꢀ $ONgT #ARE
2.4.2
DESELECT
The DESELECT function (CS = HIGH) prevents new commands from being executed by the Mobile-RAM. The Mobile-RAM is
effectively deselected. Operations already in progress are not affected.
2.4.3
MODE REGISTER SET
The Mode Register and Extended Mode Register are loaded
via inputs A0 - A12 (see mode register descriptions in
Chapter 2.2). The MODE REGISTER SET command can
only be issued when all banks are idle and no bursts are in
progress. A subsequent executable command cannot be
issued until tMRD is met.
FIGURE 7
Mode Register Set Command
#,+
#+%
#3
ꢁ(IGHꢂ
2!3
#!3
7%
!ꢃꢄ!ꢅꢆ
"!ꢃꢇ"!ꢅ
#ODE
#ODE
ꢀ $ONgT #ARE
Rev. 1.22, 2006-12
17
01132005-06IU-IGVM
QIMONDA [ QIMONDA AG ]
