HYMD532646B6-H Datasheet, PDF (18/30 Pages) Hynix Semiconductor – 1184pin Unbufferd DDR SDRAM DIMMs

1184pin Unbufferd DDR SDRAM DIMMs
AC CHARACTERISTICS (note: 1 - 9 / AC operating conditions unless otherwise noted)
Parameter
Symbol
DDR400B
Min Max
DDR333
Min Max
DDR266A
Min Max
DDR266B
Min Max
DDR200
UNIT
Min Max
Row Cycle Time
tRC
55
-
60
-
65
-
65
-
70
- ns
Auto Refresh Row
Cycle Time
tRFC
70
-
72
-
75
-
75
-
80
- ns
Row Active Time
tRAS
40
70K
42
70K
45 120K 45 120K 50 120K ns
Active to Read with
Auto Precharge Delay
tRAP
tRCD or
tRASmin
-
tRCD or
tRASmin
-
tRCD or
tRASmin
-
tRCD or
tRASmin
-
tRCD or
tRASmin
-
ns
Row Address to
Column Address Delay
tRCD
15
-
18
-
20
-
20
-
20
- ns
Row Active to Row
Active Delay
tRRD
10
-
12
-
15
-
15
-
15
- ns
Column Address to
Column Address Delay
tCCD
1
-
1
-
1
-
1
-
1
- tCK
Row Precharge Time
tRP
15
-
18
-
20
-
20
-
20
- ns
Write Recovery Time
tWR
15
-
15
-
15
-
15
-
15
- ns
Internal Write to Read
Command Delay
tWTR
2
-
1
-
1
-
1
-
1
- tCK
Auto Precharge Write
(tWR/
(tWR/
(tWR/
(tWR/
(tWR/
Recovery + Precharge
Time²²
tDAL
tCK)
+
(tRP/tCK)
-
tCK)
+
(tRP/tCK)
-
tCK)
+
(tRP/tCK)
-
tCK)
+
(tRP/tCK)
-
tCK)
+
(tRP/tCK)
-
tCK
System
CL = 3
Clock Cycle _{CL = 2.5 tCK}
Time²⁴
CL = 2
5
10
-
-
-
-
-
-
-
-
-
-
6
12
7.5
12
7.5
12
8.0
12 ns
-
-
7.5
12
7.5
12
10
12
10
12 ns
Clock High Level Width tCH
0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 tCK
Clock Low Level Width tCL
0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 tCK
Data-Out edge to Clock
edge Skew
tAC
-0.7 0.7 -0.7 0.7 -0.75 0.75 -0.75 0.75 -0.75 0.75 ns
DQS-Out edge to Clock
edge Skew
tDQSCK
-0.55
0.55
-0.6
0.6 -0.75 0.75 -0.75 0.75 -0.75 0.75 ns
DQS-Out edge to Data-
Out edge Skew²¹
tDQSQ
-
0.4
-
0.45
-
0.5
-
0.5
-
0.6 ns
Data-Out hold time
from DQS²⁰
tQH
tHP
-tQHS
-
tHP
-tQHS
-
tHP
-tQHS
-
tHP
-tQHS
-
tHP
-tQHS
-
ns
Clock Half Period^19,20
tHP
min
(tCL,tCH)
-
min
(tCL,tCH)
-
min
(tCL,tCH)
-
min
(tCL,tCH)
-
min
(tCL,tCH)
-
ns
Data Hold Skew
Factor²⁰
tQHS
-
0.5
-
0.55
-
0.75
-
0.75
-
0.75 ns
Valid Data Output
Window
tDV
tQH-tDQSQ
tQH-tDQSQ
tQH-tDQSQ
tQH-tDQSQ
tQH-tDQSQ
ns
Rev. 1.1 / May. 2005
18