"2021 JEDEC标准：LPDDR5完整英文版620页电子书"

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The JEDEC JESD209-5B standard, issued in June 2021, is a comprehensive 620-page document detailing the specifications for Low Power Double Data Rate 5 (LPDDR5) memory technology. This revision of the JESD209-5A standard from January 2020 reflects the latest advancements in LPDDR5 technology and has been rigorously reviewed and approved by the JEDEC Board of Directors and legal counsel. The purpose of JEDEC standards like JESD209-5B is to ensure consistency and clarity in the development and implementation of technologies like LPDDR5. By providing a standardized framework, these standards help manufacturers avoid misunderstandings and streamline the production process. In the case of LPDDR5, this standard sets guidelines for power efficiency, data transfer rates, and other key performance metrics crucial for modern memory applications. LPDDR5 technology offers significant improvements in performance and power efficiency compared to its predecessors, making it a popular choice for high-performance mobile devices, IoT applications, and other memory-intensive systems. The JESD209-5B standard covers essential aspects of LPDDR5 design, including command protocols, signaling specifications, and timing requirements, ensuring compatibility and interoperability across different products and manufacturers. Overall, the JEDEC JESD209-5B standard serves as a comprehensive reference for engineers, designers, and manufacturers working with LPDDR5 technology. By adhering to these guidelines, industry professionals can leverage the full potential of LPDDR5 memory in their products, fostering innovation and efficiency in the rapidly evolving field of semiconductor technology.

JEDEC Standard No. 209-5B

xiv

Figure 234 — Temp Sensor Timing ............................................................................................... 404

Figure 235 — Interval oscillator offset_temp ................................................................................. 408

Figure 236 — Interval oscillator offset_volt ................................................................................... 408

Figure 237 — In case of WCK2DQI Interval Oscillator is stopped by MPC Command ...................... 411

Figure 238 — In case of WCK2DQI Interval Oscillator is stopped by Interval Timer ........................ 411

Figure 239 — In case of WCK2DQO Interval Oscillator is stopped by MPC Command .................... 412

Figure 240 — In case of WCK2DQO Interval Oscillator is stopped by Interval Timer ....................... 412

Figure 241 — WCK2DQI/WCK2DQO Interval Oscillator Start/Stop Command Constraints Timing .. 413

Figure 242 — DVFSC High (VDD2H) to Low (VDD2L) Transition ................................................ 415

Figure 243 — DVFSC Low (VDD2L) to High (VDD2H) Transition ................................................ 415

Figure 244 — Example DVFSC Block Diagram ............................................................................. 416

Figure 245 —DVFSQ High (VDDQ) to Low Transition Flow Chart ................................................ 417

Figure 246 — DVFSQ High (VDDQ) to Low Transition Timing ..................................................... 417

Figure 247 — DVFSQ Low (VDDQ) to High (VDDQ) Transition Flow Chart without VRCG ........... 418

Figure 248 — DVFSQ Low (VDDQ) to High Transition Timing without VRCG during VddQ ramp .. 419

Figure 249 — DVFSQ Low (VDDQ) to High (VDDQ) Transition Flow Chart with VRCG ............... 420

Figure 250 — DVFSQ Low (VDDQ) to High Transition with VRCG .............................................. 420

Figure 251 — Data copy granularity and reference data configuration in BL32 ................................. 421

Figure 252 — Example of Write Data Copy Function Timing Diagram ............................................ 423

Figure 253 — Example of Read Data Copy Function Timing Diagram ............................................. 425

Figure 254 — Write X timing at Sync off: BG Mode, CKR (WCK vs. CK) = 4:1, BL=16 .................. 427

Figure 255 — Consecutive Write and Write X timing at Sync off: BG Mode, CKR (WCK vs.

CK) = 4:1, BL=16 ................................................................................................ 427

Figure 256 — Consecutive Write and Write X timing at Sync: BG Mode, CKR (WCK vs.

CK) = 4:1, BL=16 ................................................................................................ 428

Figure 257 — Write w/ write X issuing timing at Sync state. ........................................................... 428

Figure 258 — CAS_WRX Command timing after WCK2CK sync state is expired ............................ 429

Figure 259 — Guard Key Timing Diagram .................................................................................... 431

Figure 260 — PPR Timing ........................................................................................................... 432

Figure 261 — DFE pre-drive requirement ...................................................................................... 440

Figure 262 — Per-pin DFE pre-drive requirement .......................................................................... 441

Figure 263 — Example of DFE quantities of DQ bits...................................................................... 442

Figure 264 — Write command showing link ECC transfer .............................................................. 443

Figure 265 — Read command showing Link ECC transfer .............................................................. 444

Figure 266 — Data flow on a memory Write operation ................................................................... 447

Figure 267 — Data flow on a memory Read operation .................................................................... 448

Figure 268 — Timing Relationship among CK, WCK and RDQS .................................................... 451

Figure 269 — SE to Differential CK and Write DQS -FSP Switching Timing ................................... 452

Figure 270 — Differential to SE CK and Write DQS -FSP Switching Timing ................................... 453

Figure 271 — VRCG status change to high current mode: Single-ended Clock Case ......................... 454

Figure 272 — VRCG status change to high current mode: Differential Clock Case ........................... 454

Figure 273 — Enhanced WCK Always On Mode Timing Example .................................................. 457

Figure 274 — Write Timing Diagram (BG mode, CKR=4:1, BL32) Example for BL/n, BL/n_min

and BL/n_max ...................................................................................................... 460

Figure 275 — DC Voltage Range .................................................................................................. 504

Figure 276 — VDDQ Tolerance Definition in Allowable Range ...................................................... 504

Figure 277 — Zprofile Z(f) of the system at the DRAM package solder ball (without the DRAM

component) .......................................................................................................... 505

Figure 278 — A simplified Z(f) system electrical model and frequency response of the behavioral PDN

electrical load model without the DRAM component per voltage domain per channel. 506

Figure 279 — Overshoot and Undershoot Definition ...................................................................... 510

Figure 280 — CK Differential Input Voltage .................................................................................. 510

Figure 281 — Definition of differential Clock Peak Voltage ............................................................ 511

Figure 282 — Clock Single ended Input Voltage ............................................................................ 512

Figure 283 — Differential Input Slew Rate Definition for CK_t, CK_c ............................................ 513

Figure 284 — Differential Input Slew Rate Definition for CK_t, CK_c ............................................ 514

Figure 285 — WCK Differential Input Voltage ............................................................................... 515

Figure 286 — Definition of differential WCK Peak Voltage ............................................................ 516

JEDEC Standard No. 209-5B

Figure 287 — WCK Single ended Input Voltage ............................................................................. 517

Figure 288 — Differential Input Slew Rate Definition for WCK_t, WCK_c ..................................... 518

Figure 289 — Vix Definition (WCK)............................................................................................. 519

Figure 290 — Single Ended Output Slew Rate Definition ............................................................... 520

Figure 291 — Differential Output Slew Rate Definition .................................................................. 521

Figure 292 — Driver Output Reference Load for Timing ................................................................ 522

Figure 293 — Single Ended Mode WCK input Voltage ................................................................... 523

Figure 294 — Single Ended Mode WCK pulse ............................................................................... 523

Figure 295 — Single Ended Mode CK input Voltage ...................................................................... 524

Figure 296 — Single Ended Mode CK pulse .................................................................................. 525

Figure 297 — tLZ(RDQS) method for calculating transitions and end point ..................................... 526

Figure 298 — tHZ(RDQS) method for calculating transitions and end point ..................................... 527

Figure 299 — tLZ(DQ) method for calculating transitions and end point .......................................... 528

Figure 300 — tHZ(DQ) method for calculating transitions and end point ......................................... 529

Figure 301 — N-UI DQ to RDQS output timing definitions ............................................................ 555

Figure 302 — tQW example of eyewidth per pin and relationship of tDQSQ(pin) and tQH(pin)

across byte group .................................................................................................. 556

Figure 303 — Read burst example for pin DQx depicting bits 0 and 5 relative to the RDQS edge

for 0 UI mismatch ................................................................................................. 557

Figure 304 — Read burst example for pin DQx depicting bits 0 and 5 relative to the RDQS edge

for 3 UI mismatch ................................................................................................. 557

Figure 305 — Synchronous mode CS Rx Mask definition ............................................................... 559

Figure 306 — Synchronous mode CS Rx single pulse definition ...................................................... 559

Figure 307 — Synchronous mode CS Timings at the DRAM Pin ..................................................... 560

Figure 308 — Asynchronous mode ViHPD and ViLPD at Power Down Exit .................................... 560

Figure 309 — CA Rx Mask definition ........................................................................................... 562

Figure 310 — CA Rx single pulse definition .................................................................................. 562

Figure 311 — CA timings at the DRAM Pins ................................................................................. 563

Figure 312 — CK_t Rising Edge CA mask .................................................................................... 565

Figure 313 — CK_t Falling Edge CA mask .................................................................................... 565

Figure 314 — DQ, DMI, Parity and DBI Rx Mask definition .......................................................... 566

Figure 315 — DQ to WCK tWCK2DQI and tDQ2DQ Timings at the DRAM pins referenced

from the internal latch ........................................................................................... 566

Figure 316 — DQ, DMI, Parity and DBI Rx single pulse definition ................................................. 567

Figure 317 — LPDDR5X DQ single input pulse definition ............................................................. 569

Figure 318 — Example of rank assignment for a single-channel dual-rank package ........................... 573

Figure 319 — Example of rank assignment for a single-channel dual-rank package ........................... 581

JEDEC Standard No. 209-5B

xvi

Tables

Table 1 — Pad Definition and Description ......................................................................................... 3

Table 2 — Pins Per-Byte Signal List/Description for Link Protection disabled ...................................... 4

Table 3 — Pins Per-Byte Signal List/Description for Link Protection enabled ....................................... 4

Table 4 — LPDDR5 Address Translation Table .................................................................................. 8

Table 5 — LPDDR5X Address Translation Table .............................................................................. 8

Table 6 — LPDDR5 SDRAM x16 mode Addressing for BG Mode (4Banks/4Bank Groups) ................ 14

Table 7 — LPDDR5 SDRAM x8 mode Addressing for BG Mode ...................................................... 15

Table 8 — LPDDR5 SDRAM x16 mode Addressing for 8B Mode (Does not apply to LPDDR5X

SDRAM) ............................................................................................................... 16

Table 9 — LPDDR5 SDRAM x8 mode Addressing for 8B Mode (Does not apply to LPDDR5X

SDRAM) ............................................................................................................... 17

Table 10 — LPDDR5 SDRAM x16 mode Addressing for 16B Mode ................................................. 18

Table 11 — LPDDR5 SDRAM x8 mode Addressing for 16B Mode ................................................... 19

Table 12 — LPDDR5 Speed Grades ................................................................................................ 20

Table 13 — LPDDR5X Speed Grades ............................................................................................. 21

Table 14 — Burst Sequence for READ (8bank mode) (Not applicable to LPDDR5X SDRAM) ............ 22

Table 15 — Burst Sequence for READ (4bank/ 4Bank Group mode or 16Bank mode) ........................ 22

Table 16 — Burst sequence for Write .............................................................................................. 22

Table 17 — Example Clock and Interface Signal Frequency Relationship ........................................... 25

Table 18 — MRS Default setting..................................................................................................... 26

Table 19 — Voltage Ramp Conditions ............................................................................................. 26

Table 20 — Initialization Timing Parameters .................................................................................... 29

Table 21 — Reset Timing Parameter ............................................................................................... 31

Table 22 — Power Supply Conditions ............................................................................................. 31

Table 23 — Power Supply Conditions ............................................................................................. 31

Table 24 — ZQ Calibration Timing Parameters ................................................................................ 39

Table 25 — Relation between MR16 OP[3:2] Setting and Physical Register Number .......................... 47

Table 26 — Relation between MR16 OP[1:0] Setting and Physical Register Number .......................... 47

Table 27 — Mapping of CA Input pin and DQ Output pin ................................................................. 49

Table 28 — Command Bus Training AC Timing Table ...................................................................... 55

Table 29 — Mapping of MR12 OP Code and DQ Numbers ............................................................... 63

Table 30 — Mapping of CA Input pin and DQ Output pin ................................................................. 63

Table 31 — Command Bus Training AC Timing Table ...................................................................... 70

Table 32 — WCK2CK Leveling Timing Parameters ......................................................................... 79

Table 33 — Duty Cycle Adjuster Range .......................................................................................... 81

Table 34 — Read DCA Range ........................................................................................................ 84

Table 35 — DCM output example ................................................................................................... 87

Table 36 — Duty cycle monitor timing ............................................................................................ 87

Table 37 — Invert Mask or output data fix0 Assignments in X16 Mode ............................................. 89

Table 38 — Invert Mask or output data fix0 Assignments in X8 Mode ............................................... 89

Table 39 — Read DQ Calibration Bit Ordering, Inversion, output data fix0 example for DQ ............... 92

Table 40 — Read DQ Calibration Bit Ordering, Inversion, output data fix0 example for DMI .............. 92

Table 41 — DMI Output behavior and Read Latencies for Read DQ Cal. command ............................ 94

Table 42 — Relationship between MR setting and DMI behavior for RDC command.......................... 94

Table 43 — Relationship between MR setting and FIFO behavior ...................................................... 97

Table 44 — DMI, RDQS_t/Parity Input behavior for Write FIFO command ....................................... 98

Table 45 — DMI Output behavior and Read Latencies for Read FIFO command ................................ 99

Table 46 — Relationship between MR setting and DMI behavior for RFF and RDC command ............ 99

Table 47 — MR# and Operand which are prohibited to change during RDQS toggle mode. ............... 108

Table 48 — MR# and Operand which are prohibited to change during Enhanced RDQS

training mode ...................................................................................................... 111

Table 49 — Enhanced RQDS training mode entry and exit timings .................................................. 113

Table 50 — Relationship among RDQS_t, Input data and data written to cell.................................... 114

Table 51 — Read/Write-based RDQS_t training mode entry and exit timings ................................... 115

Table 52 — Relationship between MR setting and Read/Write-based WCK-RDQS_t Training ........... 115

Table 53 — DMI, RDQS_t/Parity Input behavior for Read/Write-based WCK-RDQS_t Training ....... 116

Table 54 — DMI behavior and Read Latencies for Read/Write-based WCK-RDQS_t Training .......... 116

JEDEC Standard No. 209-5B

xvii

Table 55 — Rx Offset Calibration Training Time Parameter ........................................................... 117

Table 56 — Mode Register Assignment in LPDDR5 SDRAM (MR8 OP[1:0]=00

) .......................... 123

Table 57 — Mode Register Assignment in LPDDR5X SDRAM (MR8 OP[1:0]=01

) ....................... 126

Table 58 — MR0 Register Information (MA [6:0] = 00

) ............................................................... 130

Table 59 — MR0 definition .......................................................................................................... 130

Table 60 — MR1 Register Information (MA[5:0] = 01

) ................................................................ 131

Table 61 — MR1 definition .......................................................................................................... 131

Table 62 — MR2 Register Information (MA [6:0] = 02

) ............................................................... 133

Table 63 — MR2 Register definition ............................................................................................. 133

Table 64 — nWR Latency ............................................................................................................ 136

Table 65 — MR3 Register Information (MA[7:0] = 03

) ................................................................ 137

Table 66 — MR3 Definition ......................................................................................................... 137

Table 67 — MR4 Register Information (MA[7:0] = 04

) ................................................................ 138

Table 68 — MR4 definition .......................................................................................................... 138

Table 69 — MR5 Register Information (MA[7:0] = 05

) ................................................................ 139

Table 70 — MR5 Definition ......................................................................................................... 139

Table 71 — MR6 Register Information (MA[7:0] = 06

) ................................................................ 139

Table 72 — MR6 Definition ......................................................................................................... 139

Table 73 — MR7 Register Information (MA[7:0] = 07

) ................................................................ 139

Table 74 — MR7 Definition ......................................................................................................... 139

Table 75 — MR8 Register Information (MA[7:0] = 08

) ................................................................ 140

Table 76 — MR8 Definition ......................................................................................................... 140

Table 77 — MR9 Register Information (MA[7:0] = 09

) ................................................................ 140

Table 78 — MR9 Definition ......................................................................................................... 140

Table 79 — MR10 Register Information (MA [7:0] = 0A

) ............................................................. 141

Table 80 — MR10 Definition ....................................................................................................... 141

Table 81 — MR11 Register Information (MA[7:0] = 0B

) .............................................................. 142

Table 82 — MR11 Definition ........................................................................................................ 142

Table 83 — MR12 Register Information (MA[5:0] = 0C

) .............................................................. 143

Table 84 — MR12 Definition ....................................................................................................... 143

Table 85 — MR12 V

REF

(CA) Settings ........................................................................................... 144

Table 86 — MR13 Register Information (MA[5:0] = 0D

) .............................................................. 145

Table 87 — MR13 Definition ....................................................................................................... 145

Table 88 — MR14 Register Information (MA[7:0] = 0E

) .............................................................. 146

Table 89 — MR14 definition ........................................................................................................ 146

Table 90 — MR14 V

REF

(DQ[7:0]) Settings .................................................................................... 147

Table 91 — MR15 Register Information (MA[6:0] = 0F

) .............................................................. 149

Table 92 — MR15 definition ........................................................................................................ 149

Table 93 — OP[6:0] VREF(DQ[15:8]) Settings .............................................................................. 150

Table 94 — MR16 Register Information (MA[5:0] = 10

) ............................................................... 152

Table 95 — MR16 definition ........................................................................................................ 152

Table 96 — MR17 Register Information (MA[5:0] = 11

) ............................................................... 153

Table 97 — MR17 definition ........................................................................................................ 153

Table 98 — MR18 Register Information (MA[7:0] = 12

) .............................................................. 154

Table 99 — MR18 Definition ....................................................................................................... 154

Table 100 — MR19 Register Information (MA[5:0] = 13

) ............................................................. 155

Table 101 — MR19 Definition ...................................................................................................... 155

Table 102 — MR20 Register Information (MA[7:0] = 14

) ............................................................. 156

Table 103 — MR20 definition ...................................................................................................... 156

Table 104 — MR21 Register Information (MA[7:0] = 15

) ............................................................. 157

Table 105 — MR21 Definition ...................................................................................................... 157

Table 106 — MR22 Register Information (MA[7:0] = 16

) ............................................................. 158

Table 107 — MR22 Definition ...................................................................................................... 158

Table 108 — MR23 Register Information (MA[5:0] = 17H) ............................................................ 158

Table 109 — MR23 Definition ...................................................................................................... 158

Table 110 — Row Address of Masked Segment for x16 Mode ......................................................... 158

Table 111 — Row Address of Masked Segment for x8 Mode ........................................................... 158

Table 112 — MR24 Register Information (MA[5:0]=18

) .............................................................. 159

JEDEC Standard No. 209-5B

xviii

Table 113 — MR24 Definition ..................................................................................................... 159

Table 114 — MR25 Register Information (MA[7:0] = 19

) ............................................................. 160

Table 115 — MR25 Definition ..................................................................................................... 160

Table 116 — MR26 Register Information (MA[7:0] = 1A

) ............................................................ 161

Table 117 — MR26 definition ...................................................................................................... 161

Table 118 — MR27 Register Information (MA[7:0] = 1B

) ............................................................ 162

Table 119 — MR27 Definition ...................................................................................................... 162

Table 120 — MR28 Register Information (MA[7:0] = 1C

) ............................................................ 163

Table 121 — MR28 Definition ...................................................................................................... 163

Table 122 — MR29 Register Information (MA[7:0] = 1

) ............................................................. 164

Table 123 — MR29 Definition ..................................................................................................... 164

Table 124 — MR30 Register Information (MA[5:0] = 1E

) ............................................................ 165

Table 125 — MR30 Definition ...................................................................................................... 165

Table 126 — MR31 Register Information (MA[7:0] = 1F

) ............................................................. 166

Table 127 — MR31 Definition ...................................................................................................... 166

Table 128 — MR31 Invert Register Pin Mapping ........................................................................... 166

Table 129 — MR32 Register Information (MA[7:0] = 20

) ............................................................. 167

Table 130 — MR32 definition ...................................................................................................... 167

Table 131 — MR32 Invert Register Pin Mapping ........................................................................... 167

Table 132 — MR33 Register Information (MA[7:0] = 21

) ............................................................. 168

Table 133 — MR33 Definition ...................................................................................................... 168

Table 134 — MR34 Register Information (MA[7:0] = 22

) ............................................................. 168

Table 135 — MR34 Definition ...................................................................................................... 168

Table 136 — MR35 Register Information (MA[7:0] = 23

) ............................................................. 169

Table 137 — MR35 Definition ...................................................................................................... 169

Table 138 — MR36 Register Information (MA[7:0] = 24

) ............................................................. 169

Table 139 — MR36 Definition ...................................................................................................... 169

Table 140 — MR37 Register Information (MA[7:0] = 25

) ............................................................. 170

Table 141 — MR37 Definition ...................................................................................................... 170

Table 142 — MR38 Register Information (MA[7:0] = 26

) ............................................................. 171

Table 143 — MR38 Definition ...................................................................................................... 171

Table 144 — MR39 Register Information (MA[7:0] = 27

) ............................................................. 171

Table 145 — MR39 Definition ...................................................................................................... 171

Table 146 — MR40 Register Information (MA[7:0] = 28

) ............................................................. 172

Table 147 — MR40 Definition ...................................................................................................... 172

Table 148 — MR41 Register Information (MA[6:0] = 29

) ............................................................. 173

Table 149 — MR41 definition ...................................................................................................... 173

Table 150 — MR42 Register Information (MA[7:0] = 2A

) ............................................................ 173

Table 151 — MR42 definition ...................................................................................................... 173

Table 152 — MR43 Register Information (MA[7:0] = 2B

) ............................................................ 174

Table 153 — MR43 definition ...................................................................................................... 174

Table 154 — MR44 Register Information (MA[7:0] = 2C

) ............................................................ 175

Table 155 — MR44 definition ...................................................................................................... 175

Table 156 — MR45 Register Information (MA[7:0] = 2D

) ............................................................ 176

Table 157 — MR45 definition ...................................................................................................... 176

Table 158 — Updating ECC Syndromes and Error Byte Lane ......................................................... 177

Table 159 — MR46 Register Information (MA[5:0] = 2E

) ............................................................ 177

Table 160 — MR46 definition ...................................................................................................... 177

Table 161 — MR47 Register Information (MA[7:0] = 2F

) ............................................................. 177

Table 162 — MR47 Definition ...................................................................................................... 177

Table 163 — MR48 Register Information (MA[7:0] = 30

) ............................................................. 178

Table 164 — MR48 Definition ...................................................................................................... 178

Table 165 — MR49 Register Information (MA[7:0] = 31

) ............................................................. 178

Table 166 — MR49 Definition ...................................................................................................... 178

Table 167 — MR50 Register Information (MA[7:0] = 32

) ............................................................. 178

Table 168 — MR50 Definition ...................................................................................................... 178

Table 169 — MR51 Register Information (MA[7:0] = 33

) ............................................................. 178

Table 170 — MR51 Definition ...................................................................................................... 178

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