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HYB18L256169BF Datasheet, PDF (15/48 Pages) Qimonda AG – 256-Mbit Mobile-RAM
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2.4.3 MODE REGISTER SET
#, +
#+ % (IG H
#3
2! 3
#! 3
7%
! ! 
#O DE
"! " !
#O DE
$O NgT#A RE
Figure 7 Mode Register Set Command
HY[B/E]18L256169BF-7.5
256-Mbit Mobile-RAM
Functional Description
The Mode Register and Extended Mode Register are
loaded via inputs A0 - A12 (see mode register
descriptions in Chapter 2.2). The MODE REGISTER
SET command can only be issued when all banks are
idle and no bursts are in progress. A subsequent
executable command cannot be issued until tMRD is
met.
#,+
#OM MA ND
-2 3
!DDRE SS
#O DE
./ 0
T-2$
6A LID
6A LID
$O NgT#A RE
#O DE -OD E2E GIS TER%X TEN DED-OD E2E GIS TERSE LE CTIO N
"! "! ANDOP CO DE!  ! 
Figure 8 Mode Register Definition
Table 8 Timing Parameters for Mode Register Set Command
Parameter
Symbol
min.
MODE REGISTER SET command period
tMRD
2
- 7.5
max.
–
Units Notes
tCK
–
Data Sheet
15
Rev. 1.02, 2006-12
02032006-MP0M-7FQG
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