Contents
General Description ......................................................................................................................................... 8
Functional Block Diagrams ............................................................................................................................... 9
Ball Assignments and Descriptions ................................................................................................................. 11
Package Dimensions ....................................................................................................................................... 15
Electrical Specifications .................................................................................................................................. 18
Electrical Specifications – IDD Parameters ........................................................................................................ 22
Electrical Specifications – AC Operating Conditions ......................................................................................... 26
Output Drive Characteristics ........................................................................................................................... 31
Functional Description ................................................................................................................................... 35
Commands .................................................................................................................................................... 36
DESELECT ................................................................................................................................................. 37
NO OPERATION ......................................................................................................................................... 37
LOAD MODE REGISTER ............................................................................................................................. 37
ACTIVE ...................................................................................................................................................... 37
READ ......................................................................................................................................................... 38
WRITE ....................................................................................................................................................... 39
PRECHARGE .............................................................................................................................................. 40
BURST TERMINATE ................................................................................................................................... 41
AUTO REFRESH ......................................................................................................................................... 41
SELF REFRESH ........................................................................................................................................... 42
DEEP POWER-DOWN ................................................................................................................................. 42
Truth Tables ................................................................................................................................................... 43
State Diagram ................................................................................................................................................ 48
Initialization .................................................................................................................................................. 49
Standard Mode Register .................................................................................................................................. 52
Burst Length .............................................................................................................................................. 53
Burst Type .................................................................................................................................................. 53
CAS Latency ............................................................................................................................................... 54
Operating Mode ......................................................................................................................................... 55
Extended Mode Register ................................................................................................................................. 56
Temperature-Compensated Self Refresh ...................................................................................................... 56
Partial-Array Self Refresh ............................................................................................................................ 57
Output Drive Strength ................................................................................................................................ 57
Status Read Register ....................................................................................................................................... 58
Bank/Row Activation ...................................................................................................................................... 60
READ Operation ............................................................................................................................................. 61
WRITE Operation ........................................................................................................................................... 72
PRECHARGE Operation .................................................................................................................................. 84
Auto Precharge ............................................................................................................................................... 84
Concurrent Auto Precharge ......................................................................................................................... 85
AUTO REFRESH Operation ............................................................................................................................. 90
SELF REFRESH Operation ............................................................................................................................... 91
Power-Down .................................................................................................................................................. 92
Deep Power-Down ..................................................................................................................................... 94
Clock Change Frequency ................................................................................................................................ 96
Revision History ............................................................................................................................................. 97
Rev. I, Production – 12/09 ........................................................................................................................... 97
Rev. H, Production – 03/09 .......................................................................................................................... 97
Rev. G, Production – 02/09 .......................................................................................................................... 97
Rev. F, Production – 10/08 ........................................................................................................................... 97
512Mb: x16, x32 Mobile LPDDR SDRAM
Features
PDF: 09005aef82d5d305
512mb_ddr_mobile_sdram_t47m.pdf – Rev. I 12/09 EN 3Micron Technology, Inc. reserves the right to change products or specifications without notice.
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