w9425g6eb Winbond Electronics Corp America, w9425g6eb Datasheet - Page 34

• Manufacturer Part Number: w9425g6eb
• Description: 4 M ? 4 Banks ? 16 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

11.3 Read Timing (Burst Length = 4)
Notes: The correspondence of LDQS, UDQS to DQ. (W9425G6EB)
CAS Latency = 2
CAS Latency = 3
CMD
CLK
CLK
ADD
(Data)
(Data)
Output
Output
DQS
DQS
UDQS
LDQS
t
t
IS
IS
READ
Col
t
t
IH
IH
Hi-Z
Hi-Z
Hi-Z
Hi-Z
t
CH
DQ8~15
DQ0~7
t
CL
t
RPRE
t
Preamble
CK
t
t
AC
LZ
t
- 34 -
DQSCK
QA0
t
t
RPRE
DQSQ
DA0
Preamble
t
DQSCK
t
QA1
QH
DA1
t
t
AC
LZ
t
t
DQSQ
QA0
t
QA2
DQSCK
Publication Release Date:Feb. 12, 2009
QH
t
DA0
DA2
DQSQ
QA1
t
t
Postamble
t
QA3
DQSCK
RPST
DQSQ
t
DA1
DA3
t
HZ
QH
W9425G6EB
t
DQSCK
t
t
QA2
DQSQ
QH
DA2
Postamble
t
DQSCK
QA3
t
t
RPST
DA3
HZ
t
DQSQ
Revision A02
Hi-Z
Hi-Z
Hi-Z
Hi-Z