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NRF52811-QCAA-R7 Datasheet(PDF) 8 Page - Nordic Semiconductor

Part # NRF52811-QCAA-R7
Description  nRF52811
PDF  444 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF52811-QCAA-R7 Datasheet(HTML) 8 Page - Nordic Semiconductor

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6.27.10 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
383
6.27.11 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
6.28 UARTE — Universal asynchronous receiver/transmitter with EasyDMA . . . . . . . . .
392
6.28.1 EasyDMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
6.28.2 Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
393
6.28.3 Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
394
6.28.4 Error conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
6.28.5 Using the UARTE without flow control . . . . . . . . . . . . . . . . . . . .
396
6.28.6 Parity and stop bit configuration . . . . . . . . . . . . . . . . . . . . . . . 396
6.28.7 Low power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
6.28.8 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
397
6.28.9 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
6.28.10 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
6.29 WDT — Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
6.29.1 Reload criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
411
6.29.2 Temporarily pausing the watchdog . . . . . . . . . . . . . . . . . . . . . . 411
6.29.3 Watchdog reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
6.29.4 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
6.29.5 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . .
415
7 Hardware and layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
7.1 Pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
7.1.1 QFN48 pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
7.1.2 QFN32 pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
7.1.3 WLCSP ball assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
7.1.4 GPIO pins located near the radio . . . . . . . . . . . . . . . . . . . . . . .
423
7.2 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
7.2.1 QFN48 6 x 6 mm package . . . . . . . . . . . . . . . . . . . . . . . . . . 423
7.2.2 QFN32 5 x 5 mm package . . . . . . . . . . . . . . . . . . . . . . . . . . 424
7.2.3 WLCSP 2.482 x 2.464 mm package . . . . . . . . . . . . . . . . . . . . . .
424
7.3 Reference circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425
7.3.1 Schematic QFAA QFN48 with internal LDO regulator setup . . . . . . . . . . . . . 425
7.3.2 Schematic QFAA QFN48 with DC/DC regulator setup . . . . . . . . . . . . . . .
426
7.3.3 Schematic QCAA QFN32 with internal LDO regulator setup . . . . . . . . . . . . . 427
7.3.4 Schematic QCAA QFN32 with DC/DC regulator setup . . . . . . . . . . . . . . . 428
7.3.5 Schematic CAAA WLCSP with internal LDO regulator setup . . . . . . . . . . . . . 429
7.3.6 Schematic CAAA WLCSP with DC/DC regulator setup . . . . . . . . . . . . . . .
430
7.3.7 Schematic CAAA WLCSP with two layers . . . . . . . . . . . . . . . . . . . .
432
7.3.8 PCB guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433
7.3.9 PCB layout example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
8 Recommended operating conditions. . . . . . . . . . . . . . . . . . . . 436
8.1 WLCSP light sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
436
9 Absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . 437
10 Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
10.1 IC marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
10.2 Box labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
10.3 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
439
10.4 Code ranges and values . . . . . . . . . . . . . . . . . . . . . . . . . . . .
440
10.5 Product options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
441
4454_140 v1.0
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