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參數(shù)資料
| 型號： | K4D553238F-JC2A |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 256Mbit GDDR SDRAM |
| 中文描述： | 片256Mbit GDDR SDRAM內(nèi)存 |
| 文件頁數(shù)： | 15/17頁 |
| 文件大小： | 297K |
| 代理商： | K4D553238F-JC2A |
256M GDDR SDRAM
K4D553238F-JC
- 15 -
Rev 1.0 (Mar. 2004)
(Unit : Number of Clock)
AC CHARACTERISTICS (I)
Note : 1. For normal write operation, even numbers of Din are to be written inside DRAM
Parameter
Sym-
bol
t
RC
t
RFC
t
RAS
t
RCDRD
t
RCDW
-2A
-33
-36
-40
-50
Unit Note
Min
16
17
11
5
Max
-
-
100K
-
Min
16
17
11
5
Max
-
-
100K
-
Min
16
17
11
4
Max
-
-
100K
-
Min
13
15
9
4
Max
-
-
100K
-
Min
12
14
8
4
Max
-
-
100K
-
Row cycle time
Refresh row cycle time
Row active time
RAS to CAS delay for Read
tCK
tCK
tCK
tCK
RAS to CAS delay for Write
3
-
3
-
2
-
2
-
2
-
tCK
Row precharge time
Row active to Row active
Last data in to Row precharge
@Normal Precharge
Last data in to Row precharge
@Auto Precharge
Last data in to Read command
Col. address to Col. address
Mode register set cycle time
Auto precharge write recovery +
Precharge
Exit self refresh to read command
t
RP
t
RRD
5
3
-
-
5
3
-
-
5
3
-
-
4
3
-
-
4
3
-
-
tCK
tCK
t
WR
4
-
4
-
4
-
3
-
3
-
tCK
1
t
WR_A
4
-
4
-
4
-
3
-
3
-
tCK
1
t
CDLR
t
CCD
t
MRD
t
DAL
t
XSR
t
PDEX
t
REF
3
1
2
-
-
-
3
1
2
-
-
-
2
1
2
-
-
-
2
1
2
-
-
-
2
1
2
-
-
-
tCK
tCK
tCK
1
9
-
9
-
9
-
7
-
7
-
tCK
200
3tCK
+tIS
7.8
-
200
3tCK
+tIS
7.8
-
200
3tCK
+tIS
7.8
-
200
3tCK
+tIS
7.8
-
200
3tCK
+tIS
7.8
-
tCK
Power down exit time
-
-
-
-
-
ns
Refresh interval time
-
-
-
-
-
us
AC CHARACTERISTICS (II)
K4D553238F-JC2A
Frequency
350MHz ( 2.86ns )
300MHz ( 3.3ns )
275MHz ( 3.6ns )
250MHz ( 4.0ns )
200MHz ( 5.0ns )
Cas Latency
4
4
4
3
3
tRC
16
16
16
13
12
tRFC
17
17
17
15
14
tRAS
11
11
11
9
8
tRCDRD
5
5
4
4
4
tRCDWR
3
3
2
2
2
tRP
5
5
5
4
4
tRRD
3
3
3
3
3
tDAL
9
9
9
7
7
Unit
tCK
tCK
tCK
tCK
tCK
(Unit : Number of Clock)
K4D553238F-JC33
Frequency
300MHz ( 3.3ns )
275MHz ( 3.6ns )
250MHz ( 4.0ns )
200MHz ( 5.0ns )
Cas Latency
4
4
3
3
tRC
16
16
13
12
tRFC
17
17
15
14
tRAS
11
11
9
8
tRCDRD
5
4
4
4
tRCDWR
3
2
2
2
tRP
5
5
4
4
tRRD
3
3
3
3
tDAL
9
9
7
7
Unit
tCK
tCK
tCK
tCK
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| K4D553238F-JC33 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mbit GDDR SDRAM |
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| K4D553238F-JC40 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mbit GDDR SDRAM |
| K4D553238F-JC50 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:256Mbit GDDR SDRAM |
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