參數(shù)資料
型號(hào)： MT48LC8M8A2TG-8EL:GIT
元件分類： DRAM
英文描述： 8M X 8 SYNCHRONOUS DRAM, 6 ns, PDSO54
封裝： 0.400 INCH, PLASTIC, TSOP2-54
文件頁(yè)數(shù)： 23/55頁(yè)
文件大小： 1454K
3
64Mb: x4, x8, x16 SDRAM
Micron Technology, Inc., reserves the right to change products or specifications without notice.
64MSDRAM.pmd – Rev. H; Pub. 12/04
2002 Micron Technology, Inc. All rights reserved.
64Mb: x4, x8, x16
SDRAM
TABLE OF CONTENTS
Functional Block Diagram – 16 Meg x 4 .................
4
Functional Block Diagram – 8 Meg x 8 .................
5
Functional Block Diagram – 4 Meg x 16 ...............
6
Pin Descriptions ...........................................................
7
Functional Description .............................................
8
Initialization ...........................................................
8
Register Definition .................................................
8
Mode Register ....................................................
8
Burst Length ................................................
8
Burst Type ....................................................
9
CAS Latency ................................................. 10
Operating Mode .......................................... 10
Write Burst Mode ........................................ 10
Commands .............................................................. 11
Truth Table 1 (Commands and DQM Operation) ........
11
Command Inhibit ............................................ 12
No Operation (NOP) ........................................ 12
Load Mode Register .......................................... 12
Active .................................................................. 12
Read .................................................................... 12
Write ................................................................... 12
Precharge ........................................................... 12
Auto Precharge .................................................. 12
Burst Terminate ................................................ 12
Auto Refresh ...................................................... 13
Self Refresh ........................................................ 13
Operation ................................................................ 14
Bank/Row Activation ....................................... 14
Reads ................................................................... 15
Writes ................................................................. 21
Precharge ........................................................... 23
Power-Down ...................................................... 23
Clock Suspend ................................................... 24
Burst Read/Single Write .................................. 24
Concurrent Auto Precharge ........................... 25
Truth Table 2 (CKE) ......................................................
27
Truth Table 3 (Current State, Same Bank) ....................
28
Truth Table 4 (Current State, Different Bank) ...............
30
Absolute Maximum Ratings ...................................... 32
DC Electrical Characteristics
and Operating Conditions ....................................... 32
IDD Specifications and Conditions ........................... 32
Capacitance .................................................................. 33
Electrical Characteristics and Recommended
Operating Conditions (Timing Table) ............ 34
Timing Waveforms
Initialize and Load Mode Register ...................... 36
Power-Down Mode ............................................... 37
Clock Suspend Mode ............................................ 38
Auto Refresh Mode ............................................... 39
Self Refresh Mode .................................................. 40
Reads
Read – Without Auto Precharge ................... 41
Read – With Auto Precharge .......................... 42
Single Read – Without Auto Precharge ....... 43
Single Read – With Auto Precharge .............. 44
Alternating Bank Read Accesses ..................... 45
Read – Full-Page Burst ..................................... 46
Read – DQM Operation ................................. 47
Writes
Write – Without Auto Precharge .................. 48
Write – With Auto Precharge ........................ 49
Single Write – Without Auto Precharge ...... 50
Single Write – With Auto Precharge ............. 51
Alternating Bank Write Accesses ................... 52
Write – Full-Page Burst .................................... 53
Write – DQM Operation ................................ 54
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