64Mb: x4, x8, x16 SDRAM
Features
Contents
General Description ......................................................................................................................................... 7
Automotive Temperature .............................................................................................................................. 7
Functional Block Diagrams ............................................................................................................................... 8
Pin and Ball Assignments and Descriptions ..................................................................................................... 11
Package Dimensions ....................................................................................................................................... 14
Temperature and Thermal Impedance ............................................................................................................ 16
Electrical Specifications .................................................................................................................................. 19
Electrical Specifications – IDD Parameters ........................................................................................................ 21
Electrical Specifications – AC Operating Conditions ......................................................................................... 23
Functional Description ................................................................................................................................... 27
Commands .................................................................................................................................................... 28
COMMAND INHIBIT .................................................................................................................................. 28
NO OPERATION (NOP) ............................................................................................................................... 29
LOAD MODE REGISTER (LMR) ................................................................................................................... 29
ACTIVE ...................................................................................................................................................... 29
READ ......................................................................................................................................................... 30
WRITE ....................................................................................................................................................... 31
PRECHARGE .............................................................................................................................................. 32
BURST TERMINATE ................................................................................................................................... 32
REFRESH ................................................................................................................................................... 33
AUTO REFRESH ..................................................................................................................................... 33
SELF REFRESH ....................................................................................................................................... 33
Truth Tables ................................................................................................................................................... 34
Initialization .................................................................................................................................................. 39
Mode Register ................................................................................................................................................ 41
Burst Length .............................................................................................................................................. 43
Burst Type .................................................................................................................................................. 43
CAS Latency ............................................................................................................................................... 45
Operating Mode ......................................................................................................................................... 45
Write Burst Mode ....................................................................................................................................... 45
Bank/Row Activation ...................................................................................................................................... 46
READ Operation ............................................................................................................................................. 47
WRITE Operation ........................................................................................................................................... 56
Burst Read/Single Write .............................................................................................................................. 63
PRECHARGE Operation .................................................................................................................................. 64
Auto Precharge ........................................................................................................................................... 64
AUTO REFRESH Operation ............................................................................................................................. 76
SELF REFRESH Operation ............................................................................................................................... 78
Power-Down .................................................................................................................................................. 80
Clock Suspend ............................................................................................................................................... 81
PDF: 09005aef80725c0b
64mb_x4x8x16_sdram.pdf - Rev. U 05/13 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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MICRON [ MICRON TECHNOLOGY ]
