W9464G6IH
1M × 4 BANKS × 16 BITS DDR SDRAM
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES................................................................................................................................. 4
KEY PARAMETERS ................................................................................................................... 5
PIN CONFIGURATION............................................................................................................... 6
PIN DESCRIPTION..................................................................................................................... 7
BLOCK DIAGRAM ...................................................................................................................... 8
FUNCTIONAL DESCRIPTION.................................................................................................... 9
7.1
7.2
Power Up Sequence....................................................................................................... 9
Command Function ...................................................................................................... 10
7.2.1
Bank Activate Command........................................................................................10
Bank Precharge Command ....................................................................................10
Precharge All Command ........................................................................................10
Write Command......................................................................................................10
Write with Auto-precharge Command.....................................................................10
Read Command .....................................................................................................10
Read with Auto-precharge Command ....................................................................10
Mode Register Set Command ................................................................................11
Extended Mode Register Set Command ................................................................11
No-Operation Command ........................................................................................11
Burst Read Stop Command....................................................................................11
Device Deselect Command ....................................................................................11
Auto Refresh Command.........................................................................................11
Self Refresh Entry Command.................................................................................12
Self Refresh Exit Command ...................................................................................12
Data Write Enable /Disable Command...................................................................12
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.2.9
7.2.10
7.2.11
7.2.12
7.2.13
7.2.14
7.2.15
7.2.16
7.3
7.4
7.5
7.6
7.7
7.8
7.9
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
7.10 Mode Register Operation.............................................................................................. 14
7.10.1
Burst Length field (A2 to A0)...................................................................................14
Publication Release Date:Mar. 17, 2010
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Revision A04