HYB18L256169BF QIMONDA [Qimonda AG], HYB18L256169BF Datasheet - Page 30

• Manufacturer Part Number: HYB18L256169BF
• Description: 256-Mbit Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

2.4.6.5
A WRITE burst may be followed by, or truncated with a PRECHARGE command to the same bank, provided that
Auto Precharge was not activated. This is shown in
The PRECHARGE command should be issued
the WRITE burst was registered. Additionally, when truncating a WRITE burst, DQM must be pulled to mask input
data presented during
subsequent ACTIVE command to the same bank cannot be issued until
In the case of a WRITE being executed to completion, a PRECHARGE command issued at the optimum time (as
described above) provides the same operation that would result from the same WRITE burst with Auto Precharge
enabled. The disadvantage of the PRECHARGE command is that it requires that the command and address
busses be available at the appropriate time to issue the command. The advantage of the PRECHARGE command
is that it can be used to truncate bursts.
Figure 34
2.4.7
Figure 35
Data Sheet
WRITE to PRECHARGE
WRITE to PRECHARGE Timing
BURST TERMINATE
BURST TERMINATE Command
t
WR
prior to the PRECHARGE command. Following the PRE-CHARGE command, a
t
WR
after the clock edge at which the last desired data element of
Figure
30
The BURST TERMINATE command is used to truncate
READ or WRITE bursts (with Auto Precharge
disabled). The most recently registered READ or
WRITE command prior to the BURST TERMINATE
command will be truncated, as shown in
Figure
The BURST TERMINATE command is not allowed for
truncation of READ or WRITE bursts with Auto
Precharge enabled.
34.
30, respectively.
t
RP
is met.
HY[B/E]18L256169BF-7.5
256-Mbit Mobile-RAM
Functional Description
02032006-MP0M-7FQG
Rev. 1.02, 2006-12
Figure 18
and