K4D553235F-GC Datasheet, PDF (16/18 Pages) Samsung semiconductor – 256M GDDR SDRAM

K4D553235F-GC
256M GDDR SDRAM
AC CHARACTERISTICS (II)
K4D553235F-GC25
Frequency
Cas Latency tRC
400MHz ( 2.5ns )
5
18
tRFC
20
tRAS tRCDRD tRCDWR tRP
12
6
4
6
(Unit : Number of Clock)
tRRD
4
tDAL Unit
12
tCK
K4D553235F-GC2A
Frequency
Cas Latency tRC
350MHz ( 2.86ns )
5
16
300MHz ( 3.3ns )
4
15
tRFC
18
17
tRAS tRCDRD tRCDWR tRP
10
6
4
6
10
5
3
5
tRRD
4
3
tDAL Unit
12
tCK
10
tCK
K4D553235F-GC33
Frequency
Cas Latency tRC
300MHz ( 3.3ns )
4
15
tRFC
17
tRAS tRCDRD tRCDWR tRP
10
5
3
5
tRRD
3
tDAL Unit
10
tCK
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Rev 1.6 (May 2005)