W9725G6IB-25 Winbond Electronics, W9725G6IB-25 Datasheet - Page 36
W9725G6IB-25
Manufacturer Part Number
W9725G6IB-25
Description
IC DDR2-800 SDRAM 256MB 84-WBGA
Manufacturer
Winbond Electronics
Datasheet
1.W9725G6IB-25.pdf
(84 pages)
Specifications of W9725G6IB-25
Format - Memory
RAM
Memory Type
DDR2 SDRAM
Memory Size
256M (16Mx16)
Speed
2.5ns
Interface
Parallel
Voltage - Supply
1.7 V ~ 1.9 V
Operating Temperature
0°C ~ 85°C
Package / Case
84-WBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W9725G6IB-25
Manufacturer:
Winbond Electronics
Quantity:
10 000
8.5
Simplified Stated Diagram
CKEL
MR,EMR (1)
calibration
EMR (2)
EMR (3)
Setting
Active
Power
Down
OCD
Write
WRITA
Auto-precharge
CKEL
(E)MRS
Writing
Writing
CKEL
with
Write
CKEH
PRE
PRE, PREA
WRITA
WRITA
Write
Precharging
Initialization
Precharged
PRE, PREA
Sequence
All banks
Activating
Active
ACT
Bank
Idle
Read
READA
PRE, PREA
READA
SELF
CKEH
- 36 -
CKEL
CKEH
Read
Auto-precharge
Self Refreshing
Precharge
Reading
Reading
Power
Down
with
REF
READA
CKEL
Read
CKEL
Publication Release Date: Oct. 23, 2009
CKEL
CKEL = CKE LOW, enter Power Down
CKEH = CKE HIGH, exit Power Down
CKEH = CKE HIGH, exit Self Refresh
ACT = Activate
WRITA = Write with Auto-precharge
READA = Read (with Auto-precharge
PREA = Precharge All
(E)MRS = (Extended) Mode Register Set
SELF = Enter Self Refresh
REF = Refresh
Refreshing
Autoomatic Sequence
Command Sequence
W9725G6IB
Revision A04