hys64t64020em-2.5-b2 Qimonda, hys64t64020em-2.5-b2 Datasheet - Page 20

• Manufacturer Part Number: hys64t64020em-2.5-b2
• Description: 214-pin Unbuffered Ddr2 Sdram Microdimm Modules Mdimm Sdram
• Manufacturer: Qimonda

1)
2) Timing that is not specified is illegal and after such an event, in order to guarantee proper operation, the DRAM must be powered down
Rev. 1.10, 2008-03
09032007-YO3V-5RUJ
Parameter
DQ low-impedance time from CK /
CK
DQS low-impedance from CK / CK
MRS command to ODT update
delay
Mode register set command cycle
time
OCD drive mode output delay
Data output hold time from DQS
Data hold skew factor
Average periodic refresh Interval
Average periodic refresh Interval
Auto-Refresh to Active/Auto-
Refresh command period
Read preamble
Read postamble
Active bank A to Active bank B
command period for 2 KB page size
Internal Read to Precharge
command delay
Write preamble
Write postamble
Write recovery time for write without
Auto-Precharge
Internal Write to Read command
delay
Exit power down to any valid
command
(other than NOP or Deselect)
Exit active power-down mode to
Read command (slow exit, lower
power)
Exit precharge power-down to any
valid command (other than NOP or
Deselect)
Exit Self-Refresh to non-Read
command
Exit Self-Refresh to Read command
Write recovery time for write with
Auto-Precharge
V
and then restarted through the specified initialization sequence before normal operation can continue.
DDQ
= 1.8 V ± 0.1V;
V
DD
= 1.8 V ± 0.1 V.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WR
LZ(DQ)
LZ(DQS)
MOD
MRD
OIT
QH
QHS
REFI
REFI
RFC
RPRE
RPST
RRD
RTP
WPRE
WPST
WR
WTR
XARD
XARDS
XP
XSNR
XSRD
DDR2–533
2 ×
t
0
2
0
t
—
—
—
105
0.9
0.40
7.5
0.25
0.40
15
7.5
2
6 – AL
2
t
200
t
Min.
AC.MIN
HP
10
RFC
WR
–
/
t
t
AC.MIN
+10
t
CK
QHS
20
Max.
t
t
12
—
12
—
400
7.8
3.9
—
1.1
0.60
—
—
—
0.60
—
—
—
—
—
—
—
AC.MAX
AC.MAX
Unbuffered DDR2 SDRAM MicroDIMM Modules
DDR2–400
2 ×
t
0
2
0
t
—
—
105
0.9
0.40
10
7.5
0.25
0.40
15
10
2
6 – AL
2
t
200
t
Min.
—
AC.MIN
HP
RFC
WR
–
/
HYS64T64020EM–[2.5/3/3S/3.7/5]–B2
t
t
AC.MIN
t
+10
CK
QHS
Max.
t
t
12
—
12
—
450
7.8
3.9
—
1.1
0.60
—
—
—
0.60
—
—
—
—
—
—
—
AC.MAX
AC.MAX
Internet Data Sheet
Unit
ps
ps
ns
t
ns
ps
µs
µs
ns
t
t
ns
ns
t
t
ns
ns
t
t
t
ns
t
t
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
Notes
3)4)5)6)
13)
13)
13)14)
15)17)
16)
13)
13)
15)21)
18)
19)
20)
20)
21)
1)2)