K4D263238A-GC
K4D263238A-GC40
Frequency
Cas Latency
250MHz ( 4.0ns )
4
222MHz ( 4.5ns )
4
200MHz ( 5.0ns )
3
128M DDR SDRAM
tRC
15
13
12
tRFC
17
15
14
tRAS
10
9
8
tRCDRD tRCDWR
5
3
4
2
4
2
tRP
5
4
4
tRRD
3
2
2
tDAL
8
7
7
Unit
tCK
tCK
tCK
K4D263238A-GC45
Frequency
Cas Latency
222MHz ( 4.5ns )
4/3
200MHz ( 5.0ns )
3
tRC
13
12
tRFC
15
14
tRAS
9
8
tRCDRD tRCDWR
4
2
4
2
tRP
4
4
tRRD
2
2
tDAL
7
7
Unit
tCK
tCK
K4D263238A-GC50
Frequency
Cas Latency
200MHz ( 5.0ns )
3
tRC
12
tRFC
14
tRAS
8
tRCDRD tRCDWR
4
2
tRP
4
tRRD
2
tDAL
7
Unit
tCK
Simplified Timing(2) @ BL=4
0
CK, CK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
BA[1:0]
BAa
BAa
BAa
BAa
BAb
BAa
BAb
A8/AP
Ra
Ra
Ca
Ra
Rb
ADDR
(A0~A7,
Ra
A9,A10)
Ra
Rb
Ca
Cb
WE
DQS
DQ
Da0 Da1 Da2 Da3
Da0 Da1 Da2 Da3 Db0 Db1 Db2 Db3
DM
COMMAND
ACTIVEA
WRITEA
PRECH
ACTIVEA
ACTIVEB WRITEA
WRITEB
tRCD
tRAS
tRC
tRP
tRRD
Normal Write Burst
(@ BL=4)
Multi Bank Interleaving Write Burst
(@ BL=4)
- 16 -
Rev. 2.0 (Jan. 2003)