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HYB18T1G400BF_07 Datasheet, PDF (59/74 Pages) Qimonda AG – 1-Gbit Double-Data-Rate-Two SDRAM
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Internet Data Sheet
HY[B/I]18T1G[40/80/16]0B[C/F](L/V)
1-Gbit Double-Data-Rate-Two SDRAM
Parameter
Symbol
DQ and DM input setup time (single ended
data strobe)
tDS1(base)
DQS falling edge hold time from CK (write
tDSH
cycle)
DQS falling edge to CK setup time (write cycle) tDSS
Four Activate Window period
tFAW
Four Activate Window period
tFAW
Clock half period
tHP
Data-out high-impedance time from CK / CK tHZ
Address and control input hold time
tIH(base)
Address and control input pulse width
tIPW
(each input)
Address and control input setup time
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
tIS(base)
tLZ(DQ)
tLZ(DQS)
tMOD
tMRD
tOIT
tQH
tQHS
tREFI
tREFI
—
Precharge-All (8 banks) command period
Read preamble
Read postamble
Active bank A to Active bank B command
period
tRP
tRPRE
tRPST
tRRD
Active bank A to Active bank B command
tRRD
period
Internal Read to Precharge command delay
Write preamble
Write postamble
Write recovery time for write without Auto-
Precharge
tRTP
tWPRE
tWPST
tWR
Internal Write to Read command delay
Exit power down to any valid command
(other than NOP or Deselect)
tWTR
tXARD
Exit active power-down mode to Read
command (slow exit, lower power)
tXARDS
DDR2–400
Min.
–25
0.2
0.2
37.5
50
MIN. (tCL, tCH)
—
475
0.6
350
2 × tAC.MIN
tAC.MIN
0
2
0
tHP –tQHS
—
—
—
127.5
tRP + 1 × tCK
0.9
0.40
7.5
10
7.5
0.25
0.40
15
10
2
6 – AL
Max.
—
—
—
—
—
tAC.MAX
—
—
—
tAC.MAX
tAC.MAX
12
—
12
—
450
7.8
3.9
—
—
1.1
0.60
—
—
—
—
0.60
—
—
—
—
Unit
Note1)2)3)4)5)
6)
ps
10)
tCK
tCK
ns
ns
12)
11)
ps
12)
ps
10)
tCK
ps
10)
ps
13)
ps
13)
ns
tCK
ns
ps
µs
13)14)
µs
15)17)
ns
16)
ns
tCK
13)
tCK
13)
ns
13)17)
ns
15)21)
ns
tCK
tCK
18)
ns
ns
19)
tCK
20)
tCK
20)
Rev. 1.3, 2007-07
59
03062006-ZNH8-HURV
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