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Table 34: Single-Ended DQS Slew Rate Fully Derated (DQS, DQ at Vref) at DDR2-533
Reference points indicated in bold
DQ (V/ns)
DQS Single-Ended Slew Rate Derated (at Vref)
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
0.8 V/ns
0.6 V/ns
0.4 V/ns
tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH
2.0
355 341 355 341 355 341 355 341 355 341
370
336
380 332 390 329 400 326
1.5
364 340 364 340 364 340 364 340 364 340
379
335
389 332 399 329 409 325
1.0
380 340 380 340 380 340 380 340 380 340
395
335
405 332 415 328 425 325
0.9
402 340 402 340 402 340 402 340 402 340
417
335
427 332 437 328 447 325
0.8
429 340 429 340 429 340 429 340 429 340
444
335
454 332 464 328 474 325
0.7
463 340 463 340 463 340 463 340 463 340
478
335
488 331 498 328 508 325
0.6
510 340 510 340 510 340 510 340 510 340
525
335
535 332 545 328 555 325
0.5
572 340 572 340 572 340 572 340 572 340
587
335
597 332 607 328 617 325
0.4
647 339 647 339 647 339 647 339 647 339
662
334
672 331 682 328 692 324
Table 35: Single-Ended DQS Slew Rate Fully Derated (DQS, DQ at Vref) at DDR2-400
Reference points indicated in bold
DQ (V/ns)
DQS Single-Ended Slew Rate Derated (at Vref)
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
0.8 V/ns
0.6 V/ns
0.4 V/ns
tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH
2.0
405 391 405 391 405 391 405 391 405 391
420
386
430 382 440 379 450 376
1.5
414 390 414 390 414 390 414 390 414 390
429
385
439 382 449 379 459 375
1.0
430 390 430 390 430 390 430 390 430 390
445
385
455 382 465 378 475 375
0.9
452 390 452 390 452 390 452 390 452 390
467
385
477 382 487 378 497 375
0.8
479 390 479 390 479 390 479 390 479 390
494
385
504 382 514 378 524 375
0.7
513 390 513 390 513 390 513 390 513 390
528
385
538 381 548 378 558 375
0.6
560 390 560 390 560 390 560 390 560 390
575
385
585 382 595 378 605 375
0.5
622 390 622 390 622 390 622 390 622 390
637
385
647 382 657 378 667 375
0.4
697 389 697 389 697 389 697 389 697 389
712
384
722 381 732 378 742 374
512Mb: x4, x8, x16 DDR2 SDRAM
Input Slew Rate Derating
PDF: 09005aef82f1e6e2
Rev. M 9/08 EN
69
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