K4D263238D Datasheet, PDF (16/18 Pages) Samsung semiconductor – 1M x 32Bit x 4 Banks Double Data Rate Synchronous DRAM with Bi-directional Data Strobe and DLL

K4D263238D
128M DDR SDRAM
AC CHARACTERISTICS (II)
(Unit : Number of Clock)
K4D263238D-QC40
Frequency
Cas Latency tRC
250MHz ( 4.0ns )
4
15
200MHz ( 5.0ns )
3
12
tRFC
17
14
tRAS tRCDRD tRCDWR tRP
10
5
3
5
8
4
2
4
tRRD
3
2
tDAL Unit
8
tCK
6
tCK
K4D623238F-QC50
Frequency
Cas Latency tRC
200MHz ( 5.0ns )
3
12
183MHz ( 5.5ns )
3
12
166MHz ( 6.0ns )
3
10
tRFC
14
14
12
tRAS tRCDRD tRCDWR tRP
8
4
2
4
8
4
2
4
7
3
2
3
* 183/166MHz were supported in K4D263238D-QC50
tRRD
2
2
2
tDAL Unit
6
tCK
6
tCK
5
tCK
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Rev. 1.3 (Jul. 2002)