參數(shù)資料
型號: HYB18T1G800AF-5
廠商: INFINEON TECHNOLOGIES AG
英文描述: 1 Gbit DDR2 SDRAM
中文描述: 1千兆位DDR2內(nèi)存
文件頁數(shù): 78/89頁
文件大?。?/td> 1752K
代理商: HYB18T1G800AF-5
Page 78 Rev. 1.02 May 2004
INFINEON Technologies
HYB18T1G400/800/160AF
1Gb DDR2 SDRAM
tRP
Precharge command period (single bank)
15
-
12
-
ns
tRP(A)
Precharge-All (8 banks) command period
tRP+1tCK
-
tRP+1tCK
-
ns
22
tRRD
Active bank A to Active bank B com-
mand period
x4 & x8
(1k page size)
7.5
-
7.5
-
ns
23
x16 (2k page size)
10
10
ns
tFAW
Four Activate Window period
x4 & x8
(1k page size)
37.5
-
37.5
-
ns
24
x16 (2k page size)
50
-
50
-
ns
tCCD
CAS A to CAS B Command Period
2
2
tCK
tWR
Write recovery time
15
-
15
-
ns
tDAL
Auto-Precharge write recovery + precharge time
WR+tRP
-
WR+tRP
-
tCK
14
tWTR
Internal Write to Read command delay
7.5
-
7.5
-
tCK
15
tRTP
Internal Read to Precharge command delay
7.5
-
7.5
-
ns
tXARD
Exit power down to any valid command
(other than NOP or Deselect)
2
-
2
-
tCK
16
tXARDS
Exit active power-down mode to Read command
(slow exit, lower power)
6 - AL
-
6 - AL
-
tCK
16
tXP
Exit precharge power-down to any valid command
(other than NOP or Deselect)
2
-
2
-
tCK
tXSRD
Exit Self-Refresh to Read command
200
-
200
-
tCK
tXSNR
Exit Self-Refresh to non-Read command
tRFC+10
-
tRFC+10
-
ns
tCKE
CKE minimum high and low pulse width
3
-
3
-
tCK
tREFI
Average periodic refresh Interval
0
o
C - 85
o
C
-
7.8
-
7.8
μs
19
85
o
C - 95
o
C
-
3.9
-
3.9
μs
tOIT
OCD drive mode output delay
0
12
0
12
ns
tDELAY
Minimum time clocks remain ON after CKE asynchro-
nously drops LOW
tIS+tCK+tIH
-
tIS+tCK+tIH
-
ns
17
Timing that is not specified is illegal and after such an event, in order to guarantee proper operation, the DRAM must be
powered down and then restarted through the specified initialization sequence before normal operation can continue.
7.2 Timing Parameter by Speed Grade - DDR2-667
(VDDQ = 1.8V
±
0.1V; VDD = 1.8V
±
0.1V) (notes 1-4)
Symbol
Parameter
-3S
DDR2-667-555
-3
DDR2-667-444
Unit
Notes
min.
max
min.
max
相關(guān)PDF資料
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HYB18T1G800AFL-3 1 Gbit DDR2 SDRAM
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