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

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Table 83: Power-Down Modes 2Gb: x4, x8, x16 DDR3 SDRAM Power-Down Mode exit mode precharge power-down. A summary of the two power-down modes is listed in Table 83 (page 182). While in either power-down state, CKE is held LOW, RESET# is held HIGH, and a stable clock signal must be maintained. ODT must be in a valid state but all other input signals are “Don’t Care.” If RESET# goes LOW during power-down, the DRAM will switch out of power-down mode and go into the reset state. After CKE is registered LOW, CKE must remain LOW until tPD (MIN) has been satisfied. The maximum time allowed for powerdown duration is tPD (MAX) (9 × tREFI). The power-down states are synchronously exited when CKE is registered HIGH (with a required NOP or DES command). CKE must be maintained HIGH until tCKE has been satisfied. A valid, executable command may be applied after power-down exit latency, tXP, and tXPDLL have been satisfied. A summary of the power-down modes is listed below. For specific CKE-intensive operations, such as repeating a power-down-exit-to-refreshto-power-down-entry sequence, the number of clock cycles between power-down exit and power-down entry may not be sufficient to keep the DLL properly updated. In addition to meeting tPD when the REFRESH command is used between power-down exit and power-down entry, two other conditions must be met. First, tXP must be satisfied before issuing the REFRESH command. Second, tXPDLL must be satisfied before the next power-down may be entered. An example is shown in Figure 105 (page 188). DRAM State MR0[12] DLL State Power- Down Exit Relevant Parameters Active (any bank open) “Don’t Care” On Fast tXP to any other valid command Precharged 1 On Fast tXP to any other valid command (all banks precharged) 0 Off Slow tXPDLL to commands that require the DLL to be locked (READ, RDAP, or ODT on); tXP to any other valid command PDF: 09005aef826aaadc 2Gb_DDR3_SDRAM.pdf – Rev. P 2/12 EN 182 Micron Technology, Inc. reserves the right to change products or specifications without notice. � 2006 Micron Technology, Inc. All rights reserved.
Figure 95: Active Power-Down Entry and Exit CK# CK Command Valid NOP NOP NOP NOP CKE Address T0 T1 T2 Ta0 Ta1 Ta2 Ta3 Ta4 t IH Valid t CK t CH t CL t IS Enter power-down mode t CPDED t PD t IH t IS Exit power-down mode 2Gb: x4, x8, x16 DDR3 SDRAM Power-Down Mode t CKE (MIN) t XP NOP Indicates break in time scale Valid Valid Don’t Care PDF: 09005aef826aaadc 2Gb_DDR3_SDRAM.pdf – Rev. P 2/12 EN 183 Micron Technology, Inc. reserves the right to change products or specifications without notice. � 2006 Micron Technology, Inc. All rights reserved.
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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
Page 131 and 132: Write Leveling Mode Exit Procedure
Page 133 and 134: Figure 48: Initialization Sequence
Page 135 and 136: Figure 50: MRS to nonMRS Command Ti
Page 137 and 138: Table 77: Burst Order Burst Length
Page 139 and 140: Mode Register 1 (MR1) Figure 53: Mo
Page 141 and 142: On-Die Termination (ODT) WRITE LEVE
Page 143 and 144: Mode Register 2 (MR2) Figure 55: Mo
Page 145 and 146: SRT versus ASR 2Gb: x4, x8, x16 DDR
Page 147 and 148: 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
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
Page 169 and 170: Figure 81: t WPRE Timing Figure 82:
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: Power-Down Mode Power-down is synch
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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