MT48LC4M32B2P-7 Datasheet, PDF (2/80 Pages) Micron Technology – SDR SDRAM MT48LC4M32B2 – 1 Meg x 32 x 4 Banks

128Mb: x32 SDRAM
Features
Contents
General Description ......................................................................................................................................... 6
Automotive Temperature .............................................................................................................................. 6
Functional Block Diagram ................................................................................................................................ 7
Pin and Ball Assignments and Descriptions ....................................................................................................... 8
Package Dimensions ....................................................................................................................................... 11
Temperature and Thermal Impedance ............................................................................................................ 14
Electrical Specifications .................................................................................................................................. 17
Electrical Specifications – I_DD Parameters ........................................................................................................ 18
Electrical Specifications – AC Operating Conditions ......................................................................................... 20
Functional Description ................................................................................................................................... 23
Commands .................................................................................................................................................... 24
COMMAND INHIBIT .................................................................................................................................. 24
NO OPERATION (NOP) ............................................................................................................................... 25
LOAD MODE REGISTER (LMR) ................................................................................................................... 25
ACTIVE ...................................................................................................................................................... 25
READ ......................................................................................................................................................... 26
WRITE ....................................................................................................................................................... 27
PRECHARGE .............................................................................................................................................. 28
BURST TERMINATE ................................................................................................................................... 28
AUTO REFRESH ......................................................................................................................................... 29
SELF REFRESH ........................................................................................................................................... 29
Truth Tables ................................................................................................................................................... 30
Initialization .................................................................................................................................................. 35
Mode Register ................................................................................................................................................ 38
Burst Length .............................................................................................................................................. 40
Burst Type .................................................................................................................................................. 40
CAS Latency ............................................................................................................................................... 42
Operating Mode ......................................................................................................................................... 42
Write Burst Mode ....................................................................................................................................... 42
Bank/Row Activation ...................................................................................................................................... 43
READ Operation ............................................................................................................................................. 44
WRITE Operation ........................................................................................................................................... 53
Burst Read/Single Write .............................................................................................................................. 60
PRECHARGE Operation .................................................................................................................................. 61
Auto Precharge ........................................................................................................................................... 61
AUTO REFRESH Operation ............................................................................................................................. 73
SELF REFRESH Operation ............................................................................................................................... 75
Power-Down .................................................................................................................................................. 77
Clock Suspend ............................................................................................................................................... 78
PDF: 09005aef80872800
128mb_x32_sdram.pdf - Rev. P 9/11 EN
2
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