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

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Asynchronous ODT Mode 2Gb: x4, x8, x16 DDR3 SDRAM Asynchronous ODT Mode Asynchronous ODT mode is available when the DRAM runs in DLL on mode and when either RTT,nom or RTT(WR) is enabled; however, the DLL is temporarily turned off in precharged power-down standby (via MR0[12]). Additionally, ODT operates asynchronously when the DLL is synchronizing after being reset. See Power-Down Mode (page 181) for definition and guidance over power-down details. In asynchronous ODT timing mode, the internal ODT command is not delayed by AL relative to the external ODT command. In asynchronous ODT mode, ODT controls RTT by analog time. The timing parameters tAONPD and tAOFPD replace ODTLon/ tAON and ODTLoff/ tAOF, respectively, when ODT operates asynchronously. The minimum RTT turn-on time ( tAONPD [MIN]) is the point at which the device termination circuit leaves High-Z and ODT resistance begins to turn on. Maximum RTT turnon time ( tAONPD [MAX]) is the point at which ODT resistance is fully on. tAONPD (MIN) and tAONPD (MAX) are measured from ODT being sampled HIGH. The minimum RTT turn-off time ( tAOFPD [MIN]) is the point at which the device termination circuit starts to turn off ODT resistance. Maximum RTT turn-off time ( tAOFPD [MAX]) is the point at which ODT has reached High-Z. tAOFPD (MIN) and tAOFPD (MAX) are measured from ODT being sampled LOW. PDF: 09005aef826aaadc 2Gb_DDR3_SDRAM.pdf – Rev. P 2/12 EN 204 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 205 � 2006 Micron Technology, Inc. All rights reserved. Figure 116: Asynchronous ODT Timing with Fast ODT Transition CK# CK CKE ODT R TT T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 t IH t IS t IH t IS t AONPD (MIN) Note: 1. AL is ignored. t AONPD (MAX) Table 92: Asynchronous ODT Timing Parameters for All Speed Bins R TT,nom T10 T11 T12 T13 T14 T15 T16 T17 t AOFPD (MIN) t AOFPD (MAX) Transitioning Symbol Description Min Max Unit t AONPD Asynchronous RTT turn-on delay (power-down with DLL off) 2 8.5 ns t AOFPD Asynchronous RTT turn-off delay (power-down with DLL off) 2 8.5 ns Don’t Care 2Gb: x4, x8, x16 DDR3 SDRAM Asynchronous ODT Mode
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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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Page 153 and 154: MPR Read Predefined Pattern The pre
Page 155 and 156: 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
Page 165 and 166: Figure 77: Data Strobe Timing - REA
Page 167 and 168: Figure 80: t RPST Timing CK CK# DQS
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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
Page 183 and 184: Figure 95: Active Power-Down Entry
Page 185 and 186: Figure 98: Power-Down Entry After R
Page 187 and 188: Figure 102: ACTIVATE to Power-Down
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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