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HYB18T512400AF Datasheet, PDF (48/58 Pages) Infineon Technologies AG – 512-Mbit DDR2 SDRAM
◁
Internet Data Sheet
Parameter
Symbol
DQS falling edge hold time from CK (write
tDSH
cycle)
DQS falling edge to CK setup time (write cycle) tDSS
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
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)
tMRD
tOIT
tQH
tQHS
tREFI
tREFI
Precharge-All (4 banks) command period
Precharge-All (8 banks) command period
Read preamble
Read postamble
Active bank A to Active bank B command
period
tRP
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
Exit precharge power-down to any valid
tXP
command (other than NOP or Deselect)
Exit Self-Refresh to non-Read command
tXSNR
HYB18T512[40/80/16]0AF(L)–[3/3S/3.7/5]
512-Mbit DDR2 SDRAM
DDR2–400
Min.
0.2
0.2
MIN. (tCL, tCH)
—
475
0.6
350
2 × tAC.MIN
tAC.MIN
2
0
tHP –tQHS
—
—
—
105
tRP + 1tCK
15 + 1tCK
0.9
0.40
7.5
10
7.5
0.25
0.40
15
10
2
6 – AL
2
tRFC +10
Max.
—
—
tAC.MAX
—
—
—
tAC.MAX
tAC.MAX
—
12
—
450
7.8
3.9
—
—
—
1.1
0.60
—
—
—
—
0.60
—
—
—
—
—
—
Unit
Note1)2)3)4)5)
6)
tCK
—
tCK
—
11)
ps
12)
ps
10)
tCK
—
ps
10)
ps
13)
ps
13)
tCK
—
ns
—
—
ps
—
µs
13)14)
µs
15)17)
ns
16)
ns
—
ns
—
tCK
13)
tCK
13)
ns
13)17)
ns
15)21)
ns
—
tCK
—
tCK
18)
ns
—
ns
19)
tCK
20)
tCK
20)
tCK
—
ns
—
Rev. 1.71, 2007-01
48
03062006-CPCN-4867
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