2Gb: x4, x8, x16 DDR3 SDRAM - Micron

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2Gb: x4, x8, x16 DDR3 SDRAM Asynchronous to Synchronous ODT Mode Transition (Power- Down Exit) Asynchronous to Synchronous ODT Mode Transition (Power-Down Exit) The DRAM’s ODT can exhibit either asynchronous or synchronous behavior during power-down exit (PDX). This transition period occurs if the DLL is selected to be off when in precharge power-down mode by setting MR0[12] to 0. Power-down exit begins tANPD prior to CKE first being registered HIGH, and ends tXPDLL after CKE is first registered HIGH. tANPD is equal to the greater of ODTLoff + 1tCK or ODTLon + 1tCK. The transition period is tANPD + tXPDLL. ODT assertion during power-down exit results in an RTT change as early as the lesser of tAONPD (MIN) and ODTLon × tCK + tAON (MIN), or as late as the greater of tAONPD (MAX) and ODTLon × tCK + tAON (MAX). ODT de-assertion during power-down exit may result in an RTT change as early as the lesser of tAOFPD (MIN) and ODTLoff × tCK + tAOF (MIN), or as late as the greater of tAOFPD (MAX) and ODTLoff × tCK + tAOF (MAX). Table 93 (page 207) summarizes these parameters. If AL has a large value, the uncertainty of the RTT state becomes quite large. This is because ODTLon and ODTLoff are derived from WL, and WL is equal to CWL + AL. Figure 118 (page 209) shows three different cases: • ODT C: Asynchronous behavior before tANPD. • ODT B: ODT state changes during the transition period, with tAOFPD (MIN) < ODTLoff × tCK + tAOF (MIN), and ODTLoff × tCK + tAOF (MAX) > tAOFPD (MAX). • ODT A: ODT state changes after the transition period with synchronous response. PDF: 09005aef826aaadc 2Gb_DDR3_SDRAM.pdf – Rev. P 2/12 EN 208 Micron Technology, Inc. reserves the right to change products or specifications without notice. � 2006 Micron Technology, Inc. All rights reserved.
PDF: 09005aef826aaadc Micron Technology, Inc. reserves the right to change products or specifications without notice. 2Gb_DDR3_SDRAM.pdf – Rev. P 2/12 EN 209 � 2006 Micron Technology, Inc. All rights reserved. Figure 118: Asynchronous to Synchronous Transition During Precharge Power-Down (DLL Off) Exit CK# CK CKE ODT C synchronous T0 T1 T2 Ta0 Ta1 Ta2 Ta3 Ta4 Ta5 Ta6 Tb0 Tb1 Tb2 Tc0 Tc1 Tc2 Td0 Td1 COMMAND NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP ODT A asynchronous DRAM R TT A asynchronous ODT B asynchronous or synchronous RTT B asynchronous or synchronous DRAM R TT C synchronous R TT,nom t AOFPD (MAX) t ANPD t AOFPD (MIN) R TT,nom t AOFPD (MIN) PDX transition period ODTLoff + t AOF (MIN) t AOFPD (MAX) ODTLoff + t AOF (MAX) R TT,nom t XPDLL Note: 1. CL = 6; AL = CL - 1; CWL = 5; ODTLoff = WL - 2 = 8. Indicates break in time scale ODTLoff Transitioning t AOF (MAX) t AOF (MIN) Don’t Care 2Gb: x4, x8, x16 DDR3 SDRAM Asynchronous to Synchronous ODT Mode Transition (Power- Down Exit)
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DDR3 SDRAM MT41J512M4 - 64 Meg x 4
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2Gb: x4, x8, x16 DDR3 SDRAM Feature
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State Diagram Figure 2: Simplified
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2Gb: x4, x8, x16 DDR3 SDRAM Functio
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Figure 4: 256 Meg x 8 Functional Bl
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Figure 7: 96-Ball FBGA - x16 (Top V
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Table 3: 78-Ball FBGA - x4, x8 Ball
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Table 4: 96-Ball FBGA - x16 Ball De
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Figure 9: 78-Ball FBGA - x4, x8 (HX
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Figure 11: 96-Ball FBGA - x16 (JT)
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Input/Output Capacitance Table 6: D
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Figure 12: Thermal Measurement Poin
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Table 9: I DD0 Measurement Loop CK,
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2Gb: x4, x8, x16 DDR3 SDRAM Electri
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Table 14: I DD4R Measurement Loop C
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Table 16: I DD5B Measurement Loop C
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Table 18: I DD7 Measurement Loop CK
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Electrical Characteristics - I DD S
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Table 21: I DD Maximum Limits - Die
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Electrical Specifications - DC and
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Figure 13: Input Signal 0.925V 0.85
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Table 28: Differential Input Operat
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Figure 18: Definition of Differenti
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Figure 19: Nominal Slew Rate Defini
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ODT Characteristics Figure 21: ODT
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Table 33: R TT Effective Impedances
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Figure 23: t AON and t AOF Definiti
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Output Driver Impedance Figure 26:
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34 Ohm Driver The 34� driver’s
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Alternative 40 Ohm Driver Table 45:
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Output Characteristics and Operatin
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Figure 28: Differential Output Sign
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Slew Rate Definitions for Different
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Table 53: DDR3-1333 Speed Bins DDR3
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Table 55: DDR3-1866 Speed Bins DDR3
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PDF: 09005aef826aaadc Micron Techno
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2Gb: x4, x8, x16 DDR3 SDRAM Command
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Table 62: Derating Values for t IS/
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Figure 32: Nominal Slew Rate and t
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Figure 34: Tangent Line for t IS (C
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Data Setup, Hold, and Derating 2Gb:
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Table 68: Derating Values for t DS/
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2Gb: x4, x8, x16 DDR3 SDRAM Data Se
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Figure 37: Nominal Slew Rate for t
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Figure 39: Tangent Line for t DH (D
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2Gb: x4, x8, x16 DDR3 SDRAM Command
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Commands DESELECT NO OPERATION ZQ C
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PRECHARGE REFRESH 2Gb: x4, x8, x16
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DLL Disable Mode • All other self
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Figure 42: DLL Disable Mode to DLL
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Input Clock Frequency Change 2Gb: x
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Write Leveling Figure 45: Write Lev
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Write Leveling Procedure 2Gb: x4, x
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Write Leveling Mode Exit Procedure
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Figure 48: Initialization Sequence
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Figure 50: MRS to nonMRS Command Ti
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Table 77: Burst Order Burst Length
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Mode Register 1 (MR1) Figure 53: Mo
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On-Die Termination (ODT) WRITE LEVE
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Mode Register 2 (MR2) Figure 55: Mo
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SRT versus ASR 2Gb: x4, x8, x16 DDR
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Figure 58: MPR Block Diagram Memory
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MPR Read Predefined Pattern The pre
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ACTIVATE Operation Before any READ
Page 157 and 158: READ Operation Figure 66: READ Late
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Page 163 and 164: 2Gb: x4, x8, x16 DDR3 SDRAM READ Op
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Page 175 and 176: Figure 90: WRITE (BL8) to PRECHARGE
Page 177 and 178: Figure 93: Data Input Timing DQS, D
Page 179 and 180: Figure 94: Self Refresh Entry/Exit
Page 181 and 182: Power-Down Mode Power-down is synch
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Page 189 and 190: RESET Operation 2Gb: x4, x8, x16 DD
Page 191 and 192: On-Die Termination (ODT) Figure 107
Page 193 and 194: Dynamic ODT Dynamic ODT Special Use
Page 195 and 196: Table 89: Mode Registers for R TT(W
Page 199 and 200: Synchronous ODT Mode ODT Latency an
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2Gb: x4, x8, x16 DDR3 SDRAM - Micron

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