參數(shù)資料
型號: K4D623238B-GC
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 64Mbit DDR SDRAM
中文描述: 64Mb的DDR SDRAM內(nèi)存
文件頁數(shù): 16/17頁
文件大小: 147K
代理商: K4D623238B-GC
64M DDR SDRAM
K4D623238B-GC
- 16 -
Rev. 1.4 (Sep. 2002)
0
1
2
3
4
5
6
7
8
BAa
Ra
Ra
Ra
tRCD
ACTIVEA
ACTIVEB WRITEA
WRITEB
13
14
15
16
17
18
19
20
21
BAa
BAb
Ca
Cb
BAa
Ca
9
10
11
12
PRECH
BAa
22
Normal Write Burst
(@ BL=4)
Multi Bank Interleaving Write Burst
(@ BL=4)
BAa
Ra
Ra
BAb
Rb
Rb
tRAS
tRC
tRP
tRRD
COMMAND
DQS
DQ
W E
D M
CK, CK
A8/AP
ADDR
(A0~A7,
A9,A10)
BA[1:0]
ACTIVEA
WRITEA
Da0 Da1 Da2Da3
Simplified Timing(2) @ BL=4
Db0 Db1
Db3
Da0 Da1 Da2 Da3
Db2
K4D623238B-GC50
Frequency
200MHz ( 5.0ns )
183MHz ( 5.5ns )
166MHz ( 6.0ns )
Cas Latency
3
3
3
tRC
12
12
10
tRFC
14
14
12
tRAS
8
8
7
tRCDRD
4
4
3
tRCDWR
2
2
2
tRP
4
4
3
tRRD
2
2
2
tDAL
7
7
6
Unit
tCK
tCK
tCK
K4D623238B-GC55
Frequency
183MHz ( 5.5ns )
166MHz ( 6.0ns )
Cas Latency
3
3
tRC
12
10
tRFC
14
12
tRAS
8
7
tRCDRD
4
3
tRCDWR
2
2
tRP
4
3
tRRD
2
2
tDAL
7
6
Unit
tCK
tCK
K4D623238B-GC60
Frequency
166MHz ( 6.0ns )
Cas Latency
3
tRC
10
tRFC
12
tRAS
7
tRCDRD
3
tRCDWR
2
tRP
3
tRRD
2
tDAL
6
Unit
tCK
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