This anomaly applies to IC Rev. Engineering A, build codes QIAA-AA0.
Symptoms
Higher current consumption than specified in SENSE_FIELD state.
Conditions
The NFCT is going from ACTIVATED state to SENSE_FIELD state.
Consequences
Higher current consumption in SENSE_FIELD state.
Workaround
- Do not use the FIELDLOST_SENSE shortcut in NFCT.
- Do not use a PPI channel to short FIELDLOST event and SENSE task in NFCT.
- When the FIELDLOST event is triggered in NFCT, write 0x01 to address 0x40005010. Then trigger the SENSE task in NFCT to go into SENSE_FIELD state.