W9425G6EH-5 Winbond Electronics, W9425G6EH-5 Datasheet - Page 37

• Manufacturer Part Number: W9425G6EH-5
• Description: IC DDR-400 SDRAM 256MB 66TSSOPII
• Manufacturer: Winbond Electronics

Specifications of W9425G6EH-5

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 256M (16Mx16)
• Speed: 250MHz
• Interface: Parallel
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 66-TSOPII
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.3 Read Timing (Burst Length = 4)
Notes: The correspondence of LDQS, UDQS to DQ. (W9425G6EH)
CAS Latency = 2
CAS Latency = 3
Output
Output
(Data)
(Data)
DQS
DQS
CLK
CMD
UDQS
ADD
LDQS
CLK
t
t
IS
IS
READ
Col
DQ8~15
DQ0~7
t
t
IH
IH
t
Hi-Z
Hi-Z
Hi-Z
Hi-Z
CH
t
CL
t
RPRE
Preamble
t
CK
t
t
AC
LZ
- 37 -
t
DQSCK
t
t
QA0
DA0
RPRE
DQSQ
Preamble
t
DQSCK
t
QA1
DA1
QH
t
t
AC
LZ
t
DQSCK
t
DQSQ
t
QA0
t
DA0
Publication Release Date:Dec. 03, 2008
QA2
DA2
QH
DQSQ
t
Postamble
DQSCK
t
QA1
DA1
t
t
QA3
DA3
QH
t
RPST
DQSQ
HZ
t
DQSCK
t
DQSQ
t
QA2
DA2
W9425G6EH
QH
t
Postamble
DQSCK
t
t
QA3
DA3
t
RPST
DQSQ
HZ
Revision A08
Hi-Z
Hi-Z
Hi-Z
Hi-Z