參數(shù)資料
型號(hào)： MT48LC4M32LFFC
廠商： Micron Technology, Inc.
英文描述： SYNCHRONOUS DRAM
中文描述： 同步DRAM
文件頁(yè)數(shù)： 3/52頁(yè)
文件大小： 1281K
代理商： MT48LC4M32LFFC
3
128Mb: x32 SDRAM
128MbSDRAMx32_D.p65 – Rev. D; Pub. 6/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2002, Micron Technology, Inc.
128Mb: x32
SDRAM
TABLE OF CONTENTS
Functional Block Diagram - 4 Meg x 32 ..................
Pin Descriptions ......................................................
4
5
Functional Description
......................................
Initialization......................................................
Register Definition.............................................
Mode Register ..............................................
Burst Length............................................
Burst Type ...............................................
Operating Mode .....................................
Write Burst Mode ...................................
CAS Latency............................................
Commands
............................................................
Truth Table 1 (Commands and DQM Operation)
............
Command Inhibit .............................................
No Operation (NOP) ........................................
Load Mode Register ..........................................
Active ................................................................
Read
................................................................
Write ................................................................
Precharge ...........................................................
Auto Precharge..................................................
Burst Terminate .................................................
Auto Refresh......................................................
Self Refresh ........................................................
Operation
..............................................................
Bank/Row Activation .......................................
Reads ................................................................
Writes ................................................................
Precharge ...........................................................
Power-Down .....................................................
7
7
7
7
7
8
9
9
10
10
10
11
11
11
11
11
11
11
11
12
12
12
13
13
14
20
22
22
Clock Suspend ..................................................
Burst Read/Single Write ....................................
Concurrent Auto Precharge ..............................
Write With Auto Precharge ..............................
Truth Table 2 (CKE)
................................................
Truth Table 3 (Current State, Same Bank)
.....................
Truth Table 4 (Current State, Different Bank)
.................
Absolute Maximum Ratings ..................................
DC Electrical Characteristics
and Operating Conditions.....................................
I
DD
Specifications and Conditions ........................
Capacitance ............................................................
23
23
24
25
26
27
29
31
31
31
32
AC Electrical Characteristics
(Timing Table) ....
AC Functional Characteristics ...........................
33
32
Timing Waveforms
Initialize and Load Mode Register....................
Power-Down Mode ..........................................
Clock Suspend Mode........................................
Auto Refresh Mode ...........................................
Self Refresh Mode .............................................
Reads
Read – Single Read.......................................
Read – Without Auto Precharge .................
Read – With Auto Precharge .......................
Alternating Bank Read Accesses ..................
Read – Full-Page Burst .................................
Read – DQM Operation ..............................
Writes
Write – Single Write.....................................
Write – Without Auto Precharge ................
Write – With Auto Precharge ......................
Alternating Bank Write Accesses .................
Write – Full-Page Burst ................................
Write – DQM Operation .............................
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40
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42
43
44
45
46
47
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49
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