This anomaly applies to IC Rev. Engineering A, build codes QIAA-AA0.
Conditions
USBD is enabled and runs in NORMAL mode.
Writing data with LSB set to '1' to any IP register with ID 0x52C (i.e., address set to any value in the range of 0x4000_0000 to 0x4007_FFFF with the last 12 bits equal to 52C).
This affects the following registers:
- GPIOTE->CONFIG[7]
- PPI->CH[3].TEP
- RADIO->TXADDRESS
- TEMP->A3
- SAADC->CH[1].LIMIT
- PDM->FILTER.HPDISABLE
- PWM->SEQ[0].ENDDELAY
Consequences
USBD stops working until reset.