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| 型號： | MT48LC32M8A2 |
| 廠商： | Micron Technology, Inc. |
| 英文描述： | SYNCHRONOUS DRAM |
| 中文描述： | 同步DRAM |
| 文件頁數(shù)： | 5/62頁 |
| 文件大小： | 1517K |
| 代理商： | MT48LC32M8A2 |
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5
256Mb: x4, x8, x16 SDRAM
256MSDRAM_E.p65 – Rev. E; Pub. 3/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2002, Micron Technology, Inc.
256Mb: x4, x8, x16
SDRAM
TABLE OF CONTENTS
Functional Block Diagram – 64 Meg x 4 ....................
Functional Block Diagram – 32 Meg x 8 ....................
Functional Block Diagram – 16 Meg x 16 ..................
Pin Descriptions .......................................................... 10
Ball Descriptions.......................................................... 10
6
7
8
Functional Description
............................................... 12
Initialization ........................................................... 12
Register Definition ................................................ 12
Mode Register ................................................... 12
Burst Length................................................ 12
Burst Type ................................................... 13
CAS Latency ................................................ 14
Operating Mode.......................................... 14
Write Burst Mode........................................ 14
Commands
................................................................... 15
Truth Table 1 (Commands and DQM Operation)
.............. 15
Command Inhibit.................................................. 16
No Operation (NOP) .............................................. 16
Load mode register ................................................ 16
Active ....................................................................... 16
Read ....................................................................... 16
Write ....................................................................... 16
Precharge ................................................................ 16
Auto Precharge....................................................... 16
Burst Terminate ..................................................... 17
Auto Refresh ........................................................... 17
Self Refresh ............................................................. 17
Operation
..................................................................... 18
Bank/Row Activation............................................. 18
Reads ....................................................................... 19
Writes ....................................................................... 25
Precharge ................................................................ 27
Power-Down ........................................................... 27
Clock Suspend........................................................ 28
Burst Read/Single Write ....................................... 28
Concurrent Auto Precharge ................................. 29
Truth Table 2 (CKE)
...................................................... 31
Truth Table 3 (Current State, Same Bank)
........................ 32
Truth Table 4 (Current State, Different Bank)
.................. 34
Absolute Maximum Ratings....................................... 36
DC Electrical Characteristics
and Operating Conditions....................................... 36
I
DD
Specifications and Conditions............................. 36
Capacitance.................................................................. 37
Electrical Characteristics
and Recommended AC Operating Conditions....... 37
AC Electrical Characteristics
(Timing Table) ......... 38
Timing Waveforms
Initialize and Load mode register........................ 40
Power-Down Mode ................................................ 41
Clock Suspend Mode ............................................ 42
Auto Refresh Mode ................................................ 43
Self Refresh Mode.................................................. 44
Reads
Read – Without Auto Precharge ..................... 45
Read – With Auto Precharge ........................... 46
Single Read – Without Auto Precharge ......... 47
Single Read – With Auto Precharge ............... 48
Alternating Bank Read Accesses.................... 49
Read – Full-Page Burst .................................... 50
Read – DQM Operation ................................... 51
Writes
Write – Without Auto Precharge..................... 52
Write – With Auto Precharge........................... 53
Single Write - Without Auto Precharge ......... 54
Single Write - With Auto Precharge................ 55
Alternating Bank Write Accesses ................... 56
Write – Full-Page Burst .................................... 57
Write – DQM Operation ................................... 58
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT48LC32M8A2-75 | 制造商:Micron Technology Inc 功能描述: |
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