w9425g6jb Winbond Electronics Corp America, w9425g6jb Datasheet
w9425g6jb
Manufacturer Part Number
w9425g6jb
Description
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W9425G6JB.pdf
(50 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
w9425g6jb-5
Manufacturer:
WINBOND/华邦
Quantity:
20 000
Company:
Part Number:
w9425g6jb-5
Manufacturer:
WINBOND
Quantity:
8 000
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ............................................................................................................. 4
FEATURES .................................................................................................................................... 4
KEY PARAMETERS ...................................................................................................................... 5
BALL CONFIGURATION ............................................................................................................... 6
BALL DESCRIPTION ..................................................................................................................... 7
BLOCK DIAGRAM ......................................................................................................................... 8
FUNCTIONAL DESCRIPTION ....................................................................................................... 9
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10 Mode Register Operation .................................................................................................. 14
Power Up Sequence ............................................................................................................ 9
Command Function ........................................................................................................... 10
7.2.1 Bank Activate Command ........................................................................................ 10
7.2.2 Bank Precharge Command .................................................................................... 10
7.2.3 Precharge All Command ........................................................................................ 10
7.2.4 Write Command ...................................................................................................... 10
7.2.5 Write with Auto-precharge Command .................................................................... 10
7.2.6 Read Command ...................................................................................................... 10
7.2.7 Read with Auto-precharge Command .................................................................... 10
7.2.8 Mode Register Set Command ................................................................................ 11
7.2.9 Extended Mode Register Set Command ................................................................ 11
7.2.10 No-Operation Command ........................................................................................ 11
7.2.11 Burst Read Stop Command .................................................................................... 11
7.2.12 Device Deselect Command .................................................................................... 11
7.2.13 Auto Refresh Command ......................................................................................... 11
7.2.14 Self Refresh Entry Command ................................................................................. 12
7.2.15 Self Refresh Exit Command ................................................................................... 12
7.2.16 Data Write Enable /Disable Command ................................................................... 12
Read Operation ................................................................................................................. 12
Write Operation ................................................................................................................. 13
Precharge .......................................................................................................................... 13
Burst Termination .............................................................................................................. 13
Refresh Operation ............................................................................................................. 13
Power Down Mode ............................................................................................................ 14
Input Clock Frequency Change during Precharge Power Down Mode ............................ 14
4 M × 4 BANKS × 16 BITS DDR SDRAM
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Publication Release Date: Oct. 08, 2010
W9425G6JB
Revision A01