HYB18M1G320BF QIMONDA [Qimonda AG], HYB18M1G320BF Datasheet - Page 21

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

1)
2.4.5
READ bursts are initiated with a READ command, as shown
in
Basic timings for the DQs are shown in
to all read operations.
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 that is accessed will start precharge at the completion
of the burst, provided
READ commands used in the following illustrations, Auto
Precharge is disabled.
Rev.1.00, 2007-03
02022006-J7N7-GYFP
Parameter
ACTIVE to ACTIVE command period
ACTIVE to READ or WRITE delay
ACTIVE bank A to ACTIVE bank B delay
Figure
These parameters account for the number of clock cycles and depend on the operating frequency, as follows:
no. of clock cycles = specified delay / clock period; round to the next higher integer.
11.
READ
t
RAS
has been satisfied. For the generic
Figure
12; they apply
21
Timing Parameters for ACTIVE Command
t
t
t
RC
RCD
RRD
BA0,BA1
Symbol
A0-A9
BA = Bank Address
CA = Column Address
AP = Auto Precharge
CKE
RAS
CAS
A10
WE
CK
CK
CS
65
22.5
15
min.
(High)
= Don't Care
Disable AP
Enable AP
- 7.5
CA
AP
BA
1-Gbit DDR Mobile-RAM
–
–
–
max.
HY[B/E]18M1G320BF
READ Command
FIGURE 11
TABLE 10
Unit
ns
ns
ns
Data Sheet
Note
1)