HYB18M1G320BF QIMONDA [Qimonda AG], HYB18M1G320BF Datasheet - Page 24

• Manufacturer Part Number: HYB18M1G320BF
• Description: DRAMs for Mobile Applications 1-Gbit x32 DDR Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

Data from any READ burst may be concatenated with or truncated with data from a subsequent READ command. In either
case, a continuous flow of data can be maintained. The first data element from the new burst follows either the last element of
a completed burst or the last desired data element of a longer burst which is being truncated.
The new READ command should be issued x cycles after the first READ command, where x equals the number of desired data
element pairs (pairs are required by the 2n pre fetch architecture). This is shown in
A READ command can be initiated on any clock cycle following a previous READ command. Nonconsecutive READ data is
illustrated in
Rev.1.00, 2007-03
02022006-J7N7-GYFP
Command
Address
DO n (or b) = Data Out from column n (or column b)
Burst Length = 4, 8 or 16 (if 4, the bursts are concatenated; if 8 or 16, the second burst interrupts the first)
3 subsequent elements of Data Out appear in the programmed order following DO n
3 (or 7 or 15) subsequent elements of Data Out appear in the programmed order following DO b
Read commands shown must be to the same device
DQS
DQS
DQ
DQ
CK
CK
Figure
BA,Col n
15.
READ
CL=2
NOP
CL=3
DO n
BA,Col b
READ
24
DO n
NOP
Figure
DO b
NOP
14.
Consecutive READ Bursts
1-Gbit DDR Mobile-RAM
HY[B/E]18M1G320BF
DO b
FIGURE 14
= Don't Care
NOP
Data Sheet