K4D263238E Samsung, K4D263238E Datasheet - Page 16

• Manufacturer Part Number: K4D263238E
• Description: 1M x 32Bit x 4 Banks Graphic Double Data Rate Synchronous DRAM with Bi-directional Data Strobe and DLL
• Manufacturer: Samsung

COMMAND
K4D263238E-GC36
K4D263238E-GC40
K4D263238E-GC45
K4D263238E-GC
Simplified Timing(2) @ BL=4
(A0~A7,
A9,A10)
BA[1:0]
CK, CK
A8/AP
275MHz ( 3.6ns )
250MHz ( 4.0ns )
222MHz ( 4.5ns )
250MHz ( 4.0ns )
222MHz ( 4.5ns )
222MHz ( 4.5ns )
ADDR
DQS
WE
DQ
DM
ACTIVEA
Frequency
Frequency
Frequency
BAa
Ra
Ra
Ra
0
1
tRCD
2
Normal Write Burst
WRITEA
Cas Latency
Cas Latency
Cas Latency
BAa
Ca
3
(@ BL=4)
tRAS
4
4
3
4
3
3
Da0 Da1 Da2 Da3
4
5
tRC
tRC
tRC
tRC
13
13
12
13
12
12
6
7
PRECH
tRFC
tRFC
tRFC
BAa
15
15
14
15
14
14
8
9
tRP
tRAS
tRAS
tRAS
9
9
8
9
8
8
10
- 16 -
ACTIVEA
BAa
Ra
Multi Bank Interleaving Write Burst
Ra
11
tRCDRD tRCDWR
tRCDRD tRCDWR
tRCDRD tRCDWR
tRRD
12
4
4
4
4
4
4
ACTIVEB WRITEA
Rb
Rb
BAb
(@ BL=4)
13
Ca
BAa
14
2
2
2
2
2
2
Da0 Da1 Da2 Da3
15
WRITEB
Cb
BAb
128M GDDR SDRAM
tRP
tRP
tRP
16
4
4
4
4
4
4
Db0 Db1
17
Db2
tRRD
tRRD
tRRD
Rev 1.7 (Nov. 2003)
Db3
18
3
3
3
3
3
3
19
tDAL
tDAL
tDAL
20
7
7
7
7
7
7
21
Unit
Unit
Unit
tCK
tCK
tCK
tCK
tCK
tCK
22