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参数资料
| 型号： | MT46H256M32L4CM-54IT:A |
| 元件分类： | DRAM |
| 英文描述： | 256M X 32 DDR DRAM, 5 ns, PBGA90 |
| 封装： | 10 X 13 MM, GREEN, PLASTIC, VFBGA-90 |
| 文件页数： | 30/106页 |
| 文件大小： | 3431K |
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Contents
General Description ......................................................................................................................................... 8
Functional Block Diagrams ............................................................................................................................... 9
Ball Assignments ........................................................................................................................................... 11
Ball Descriptions ............................................................................................................................................ 15
Package Block Diagrams ................................................................................................................................. 17
Package Dimensions ...................................................................................................................................... 20
Electrical Specifications .................................................................................................................................. 26
Electrical Specifications – IDD Parameters ........................................................................................................ 29
Electrical Specifications – AC Operating Conditions ......................................................................................... 35
Output Drive Characteristics ........................................................................................................................... 40
Functional Description ................................................................................................................................... 43
Commands .................................................................................................................................................... 44
DESELECT ................................................................................................................................................ 45
NO OPERATION ........................................................................................................................................ 45
LOAD MODE REGISTER ............................................................................................................................ 45
ACTIVE ..................................................................................................................................................... 45
READ ........................................................................................................................................................ 46
WRITE ...................................................................................................................................................... 47
PRECHARGE ............................................................................................................................................. 48
BURST TERMINATE .................................................................................................................................. 49
AUTO REFRESH ........................................................................................................................................ 49
SELF REFRESH ........................................................................................................................................... 50
DEEP POWER-DOWN ................................................................................................................................ 50
Truth Tables ................................................................................................................................................... 51
State Diagram ................................................................................................................................................ 56
Initialization .................................................................................................................................................. 57
Standard Mode Register .................................................................................................................................. 60
Burst Length .............................................................................................................................................. 61
Burst Type ................................................................................................................................................. 61
CAS Latency .............................................................................................................................................. 62
Operating Mode ......................................................................................................................................... 63
Extended Mode Register ................................................................................................................................. 64
Temperature-Compensated Self Refresh .................................................................................................... 64
Partial-Array Self Refresh ........................................................................................................................... 65
Output Drive Strength ................................................................................................................................ 65
Status Read Register ....................................................................................................................................... 66
Bank/Row Activation ...................................................................................................................................... 68
READ Operation ............................................................................................................................................. 69
WRITE Operation ........................................................................................................................................... 80
PRECHARGE Operation .................................................................................................................................. 92
Auto Precharge ............................................................................................................................................... 92
Concurrent Auto Precharge ........................................................................................................................ 93
AUTO REFRESH Operation ............................................................................................................................. 98
SELF REFRESH Operation .............................................................................................................................. 99
Power-Down ................................................................................................................................................. 100
Deep Power-Down ................................................................................................................................... 102
Clock Change Frequency ............................................................................................................................... 104
Revision History ............................................................................................................................................ 105
Rev. M – 11/10 ........................................................................................................................................... 105
Rev. L – 09/10 ............................................................................................................................................ 105
2Gb: x16, x32 Mobile LPDDR SDRAM
Features
PDF: 09005aef83a73286
2gb_ddr_mobile_sdram_t69m.pdf - Rev. M 11/10 EN
3
Micron Technology, Inc. reserves the right to change products or specifications without notice.
2009 Micron Technology, Inc. All rights reserved.
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