Data Sheet.
HY[B/E]18L512160BF-7.5
512-Mbit Mobile-RAM
2.4.5
READ
Subsequent to programming the mode register with CAS
latency and burst length, READ bursts are initiated with a
READ command, as shown in Figure 11. Basic timings for
the DQs are shown in Figure 12; they apply to all read
operations and therefore are omitted from all subsequent
timing diagrams.
The starting column and bank addresses are provided with
the READ command and Auto Precharge is either enabled or
disabled for that burst access. If Auto Precharge is enabled,
the row being accessed starts precharge at the completion of
the burst, provided tRAS has been satisfied. For the generic
READ commands used in the following illustrations, Auto
Precharge is disabled.
FIGURE 11
READ Command
#,+
#+%
#3
ꢃ(IGHꢄ
2!3
#!3
7%
!ꢀꢅ!ꢆ
#!
%NABLE !0
!0
$ISABLE !0
"! ꢇ "ANK !DDRESS
#! ꢇ #OLUMN !DDRESS
!0 ꢇ !UTO 0RECHARGE
!ꢂꢀ
ꢇ $ONgT #ARE
"!ꢀꢁ"!ꢂ
"!
FIGURE 12
Basic READ Timing Parameters for DQs
#,+
T$1:
$1-
T!#
T!#
T/(
T(:
T/(
T,:
$/ N
$/ Nꢁꢂ
$1
ꢀ $ONgT #ARE
Rev. 1.22, 2006-12
20
01132005-06IU-IGVM
QIMONDA [ QIMONDA AG ]
