W9425G6EH-5 Winbond Electronics, W9425G6EH-5 Datasheet - Page 43
![IC DDR-400 SDRAM 256MB 66TSSOPII](/photos/28/21/282152/w9425g6eh-5_sml.jpg)
W9425G6EH-5
Manufacturer Part Number
W9425G6EH-5
Description
IC DDR-400 SDRAM 256MB 66TSSOPII
Manufacturer
Winbond Electronics
Datasheet
1.W9425G6EH-5.pdf
(54 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W9425G6EH-5
Manufacturer:
WINBOND
Quantity:
1 728
Part Number:
W9425G6EH-5
Manufacturer:
WINBOND/华邦
Quantity:
20 000
11.9 Auto-precharge Timing (Read cycle, CL = 2), continued
2) t
Notes: CL2 shown; same command operation timing with CL = 2.5, CL=3.
RCD/RAP(min)
BL=2
BL=4
BL=8
In this case, the internal precharge operation does not begin until after t
The Read with Auto-precharge command cannot be interrupted by any other command.
AP
CMD
CMD
DQS
CMD
DQS
CLK
CLK
DQ
DQ
DQS
DQ
Represents the start of internal precharging.
≤ t
ACT
ACT
ACT
RCD
(READA) < t
t
t
t
t
t
t
RCD
RCD
RCD
RAP
RAP
RAP
READA
READA
READA
RAS (min)
t
RAS
– (BL/2) × t
- 43 -
Q0
Q0
Q0
Q1
Q1
Q1
CK
Q2
Q2
RAS
Q3
Q3
AP
AP
AP
Publication Release Date:Dec. 03, 2008
(min) has command.
Q4
Q5
t
RP
Q6
W9425G6EH
Q7
ACT
ACT
ACT
Revision A08