
DDR SDRAM
256MB, 512MB Unbuffered DIMM
Rev. 1.2 July 2005
Table of Contents
1.0 Ordering Information................................................................................................................... 4
2.0 Operating Frequencies................................................................................................................ 4
3.0 Feature.......................................................................................................................................... 4
4.0 Pin Configuration (Front side/back side) ................................................................................. 5
5.0 Pin Description ............................................................................................................................ 5
6.0 Functional Block Diagram .......................................................................................................... 6
6.1 256MB, 32M x 64 Non ECC Module (M368L3223ET(U)) .....................................................................................
6
6.2 256MB, 32M x 72 ECC Module (M381L3223ET(U)) ............................................................................................
7
6.3 512MB, 64M x 64 Non ECC Module (M368L6423E(U)) ......................................................................................
8
6.4 512MB, 64M x 72 ECC Module (M381L6423ET(U)) .............................................................................................
9
7.0 Absolute Maximum Ratings...................................................................................................... 10
8.0 DC Operating Conditions.......................................................................................................... 10
9.0 DDR SDRAM IDD spec table ..................................................................................................... 11
9.1 M368L3223ET(U) [ (32M x 8) * 8, 256MB Non ECC Module ] .................................................................................
11
9.2 M381L3223ET(U) [ (32M x 8) * 9, 256MB ECC Module ] ..........................................................................................
11
9.3 M368L6423ET(U) [ (32M x 8) * 16, 512MB Non ECC Module ] ...............................................................................
12
9.4 M381L6423ET(U) [ (32M x 8) * 18, 512MB ECC Module ] ........................................................................................
12
10.0 AC Operating Conditions........................................................................................................ 13
11.0 Input/Output Capacitance ....................................................................................................... 13
12.0 AC Timming Parameters & Specifications ............................................................................ 14
13.0 System Characteristics for DDR SDRAM .............................................................................. 15
14.0 Component Notes.................................................................................................................... 16
15.0 System Notes ........................................................................................................................... 17
16.0 Command Truth Table............................................................................................................. 18
17.0 Physical Dimensions............................................................................................................... 19
17.1 32M x 64 (M368L3223ET(U))
..................................................................................................... 19
17.2 32M x 72 (M381L3223ET(U))
..................................................................................................... 20
17.3 64M x 64 (M368L6423ET(U))
..................................................................................................... 21
17.4 64M x 72 (M381L6423ET(U))
..................................................................................................... 22