HY[B/E]18L256160B[C/F]X-7.5
256-Mbit Mobile-RAM
Functional Description
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.
#,+
#+%
#3
ꢌ(IGHꢍ
2!3
#!3
7%
!ꢂꢎ!ꢀꢁ
"!ꢂꢏ"!ꢀ
#O E
#O E
ꢒ $ONgT #ARE
Figure 7
Mode Register Set Command
#,+
#OMMAN
-23
./0
6ALI
T-2$
!
RESS
#O E
6ALI
ꢒ $ONgT #ARE
#O E ꢒ -O E 2EGISTER ꢊ %XTEN E -O E 2EGISTER SELECTION
ꢌ"!ꢂꢏ "!ꢀꢍ AN OPꢎCO E ꢌ!ꢂ ꢎ !ꢀꢁꢍ
Figure 8
Mode Register Definition
Table 8
Timing Parameters for Mode Register Set Command
Symbol
Parameter
- 7.5
Units
Notes
min.
max.
MODE REGISTER SET command period
tMRD
2
–
tCK
–
Data Sheet
15
Rev. 1.11, 2007-01
07142005-CR47-RB2E
QIMONDA [ QIMONDA AG ]
