MT48LC64M4A2 Micron Technology, MT48LC64M4A2 Datasheet - Page 5

• Manufacturer Part Number: MT48LC64M4A2
• Description: (MT48Lxxxx) SYNCHRONOUS DRAM
• Manufacturer: Micron Technology

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
Functional Description ............................................... 12
Commands ................................................................... 15
Operation ..................................................................... 18
256Mb: x4, x8, x16 SDRAM
256MSDRAM_E.p65 – Rev. E; Pub. 3/02
Initialization ........................................................... 12
Register Definition ................................................ 12
Truth Table 1 (Commands and DQM Operation)
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
Bank/Row Activation ............................................. 18
Reads ....................................................................... 19
Writes ....................................................................... 25
Precharge ................................................................ 27
Power-Down ........................................................... 27
Clock Suspend ........................................................ 28
Burst Read/Single Write ....................................... 28
Mode Register ................................................... 12
Burst Length ................................................ 12
Burst Type ................................................... 13
CAS Latency ................................................ 14
Operating Mode .......................................... 14
Write Burst Mode ........................................ 14
.............. 15
6
7
8
5
Absolute Maximum Ratings ....................................... 36
DC Electrical Characteristics
I
Capacitance .................................................................. 37
Electrical Characteristics
AC Electrical Characteristics (Timing Table) ......... 38
Timing Waveforms
DD
Concurrent Auto Precharge ................................. 29
Truth Table 2 (CKE)
Truth Table 3 (Current State, Same Bank)
Truth Table 4 (Current State, Different Bank)
and Operating Conditions ....................................... 36
and Recommended AC Operating Conditions ....... 37
Initialize and Load mode register ........................ 40
Power-Down Mode ................................................ 41
Clock Suspend Mode ............................................ 42
Auto Refresh Mode ................................................ 43
Self Refresh Mode .................................................. 44
Reads
Writes
Specifications and Conditions ............................. 36
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
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
Micron Technology, Inc., reserves the right to change products or specifications without notice.
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256Mb: x4, x8, x16
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©2002, Micron Technology, Inc.
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SDRAM